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Hi, I have a TMobile MDA Pro and i have purchased an in car charger so that I can use it with TomTom satnav unit, slight problem, unit does not charge when in the car. Bizarre, as when I use the standard USB Charge & Sync cable with PC happily syncs and charges with no issues. Anyone any ideas, does there have to be a specific setting on the unit to enable it to accept charge via the cigarette socket in car?
Many thanks
I found that to charge the universal, pins 4 and 5 in the mini USB plug need to get joined together - by default pin 5 is not connected to anything (well, wasn't in the cable I had). I've made that modification, and am powering a couple of devices of of a 2 port hub in the car.
Cheers,
Steve
Hi, sounds like a problem I am having and meaning to ask about.
I've got a USB cigy lighter adapter and tried plugging in the sync lead to provide power when it's in the car. So if I have my Exec in standby the charge light will come on (I think it charges sitting on the today screen, but not to sure) but as soon as I fire up tomtom the charging light goes off....
Does this sound like your problem, or are you not charging at all?
I'm interested in finding out what I need to charge the Exec while it's running tomtom? Anyone have any ideas?
Cheers
Matt
I'm pretty certain that I didn't get a charge light at all with my cable until I modified it, then it works, as expected, including in TomTom.
To confirm what I've got is:
- A Ciggy to USB socket adapter
- A two port hub plugged into the adapter
- Modified cable into the hub (along with an unmodified cable connected to my BT-77 GPS unit).
Plugging the cable (prior to modification) directly into the adapter, rather than the hub, didn't work either. The Brodit all-in-one adapter/cable worked fine (and I still have it intact, but not in use), but if memory serve, pins 4 & 5 appear to be connected. I used a multi-meter to try and find out why that one worked, and my combination didn't.
All of this stuff is wired in behind the centre console, so I've not got any unsightly wires, or anything.
Cheers,
Steve.
I think you need a car charger that can output 1000mA to charge the Universal. Same requirement also for an AC charger. 1000mA is what's important. Cheers
Hi, We have had quite a few customers with this issue, we advised and they have opted for the brodit active mounts which have the inbuilt cig chargers and it has cured the problem, or for the neater solution they went for the Molex hardwired versions to stash the cables behind the dash area,
The codes are: 968649 for the cig charger version or 971649 for the Molex hardwired version, http://www.dsldevelopments.com/brodit/holder/T-Mobile+MDA Pro-Brodit-Holder.asp
Hope that helps, drop me a line if you need any advice,
Thanks again
Bryson
Found 1A 5V car adapter
this is the only place I found off ebay that has a 1A car adapter
http://cgi.ebay.co.uk/CAR-CIGAR-CIG...4QQihZ006QQcategoryZ15329QQrdZ1QQcmdZViewItem
It works fine on my MDA Pro, just need to plug it in while it is off for it to start charging.. if turned on, then pluged in, then it won't start charging.
I even have an 800mA adapter, but that doesn't help the MDA Pro, it needs more power!
bryson said:
Hi, We have had quite a few customers with this issue, we advised and they have opted for the brodit active mounts which have the inbuilt cig chargers and it has cured the problem, or for the neater solution they went for the Molex hardwired versions to stash the cables behind the dash area,
The codes are: 968649 for the cig charger version or 971649 for the Molex hardwired version, http://www.dsldevelopments.com/brodit/holder/T-Mobile+MDA Pro-Brodit-Holder.asp
Hope that helps, drop me a line if you need any advice,
Thanks again
Bryson
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Hi there Bryson
The items you quoted are actually the charger and the holder for the PDA. I also notice from the link you provided that there are 2 cig chargers (items codes 942625 and 942650). Can I know what are the differences between these 2 models and would either of this chargers charge the Universal while it is running a navigation software such as TomTom or Garmin Que?
Also, do you ship to Singapore?
I would like to get a car charger that works with the O2 Exec when I am running navigational programs such as Garmin Que and TomTom. I have tried more than 5 chargers but no luck thus far.
If anyone has any to recommend, do let me know. I am located in Singapore.
i use my car charger from my gps that is the Holux 236, the only think i have to do so that it starts charging is turn it off on the button and the led will change to orange, i have tried one other charger that has a usb plug and it worked fine ! So has long as it has a usb plug you'll be alright and if you do not find one look for the Motorola car plugs that it will probably work on Uni since it has a mini usb plug
The charger from M3000 works fine with my Uni
And the Motorola Mini-USB chargers doesn't work...
Hi, I found that this issue is connected with proper usb cable not with charger itself (usb mini have 5 connector but in some cables only 4 are connected and in some other cables all 5 are connected and so are the difference). I was also trying many chargers and no luck. But I ve tryied charger with other cable and suddenly all chargers start charging my jasjar.
Anyway, the bad thing is it stops whitout any reason so now charging jasjar in my car is a real mystery for me.
regards,
Piotr
Be careful if buying one with a double USB output - I bought a few different models hoping to power both Exec and the Holux GPSlim-236, but all failed. They would power the Exec, but as soon as the Holux was connected, it would always cause the Exec to continually reboot - fortunately "soft". Make sure the supplier will take them back if it doesn't work.
Try a car charger with a USB socket on the end that takes a separate Sync/Charge cable.
The problem is, the exec is very power hungry, especially when the batt is dead !! you need a high current charger at least 1A (1 amp) the charger used with the blackberry (I forget which model) is suitable as is the genuine exec charger obviously.
use O2 Atom car charge
O2 Atom car charge will work with O2 Exec as well as A/C charger from Atom
Exec/SPV car charger...
Got an o2 branded one today for the Exec/Mini - works like a charm (Charges my SPV and runs Tt at the same time) but cost me £14.99 for the privelage!
could you post a link to the website? I would love to purchase one but am currently located in Singapore and so far all the charges don't seem to work for me.
vapor said:
I would like to get a car charger that works with the O2 Exec when I am running navigational programs such as Garmin Que and TomTom. I have tried more than 5 chargers but no luck thus far.
If anyone has any to recommend, do let me know. I am located in Singapore.
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Click to collapse
I have one brand new that Imate sent me for a delayed process when i got my JASJAR repaired.Never used it either.Let me know if you are interested.Regards
southernint3l said:
I have one brand new that Imate sent me for a delayed process when i got my JASJAR repaired.Never used it either.Let me know if you are interested.Regards
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I would love it but can you confirm that it would charge the phone while running navigational programs?
You can email me at [email protected] to discuss the price and shipping.
vapor said:
I would love it but can you confirm that it would charge the phone while running navigational programs?
You can email me at [email protected] to discuss the price and shipping.
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Click to collapse
Yes it does.I have TOM TOM navigation and IGO that i use.I have a 3800 Li-Ion battery.I plugged it in to see if it worked and it does.Has a green light and all.I will email you tmw.As i have just got done with a long day of data entry for work.FYI
Whatever you are doing with the phone,it charges while its plugged in.
southernint3l said:
Yes it does.I have TOM TOM navigation and IGO that i use.I have a 3800 Li-Ion battery.I plugged it in to see if it worked and it does.Has a green light and all.I will email you tmw.As i have just got done with a long day of data entry for work.FYI
Whatever you are doing with the phone,it charges while its plugged in.
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sounds great. I have gotten your email and replied. Hope we can come to a decision soon and I can get my hands on the charger.
if anyone else has any for sale, do let me know as well.
Car Charger for UNI - how to make working
Hi All!
I've also tryed 2 diferent car chargers and 1 USB Pluggable Car Charger (some noname chineese 3-rd party) with 3 diferent cables, and one 3-rd party AC Power Charger. They ALL worked strange.
I can confirm that to make them all work I should:
1. Switch off the Universal;
2. Plug in the chgrer in to Universal;
3. Wait until the Red Light on.
Now I may turn the Universal On, and see the "Charging" battery status.
The reason and how to fix:
As you may see I used different adapters. All they have from 0.5 to 1.0A output circuit. But, the USB ports I used with my laptops have only 0.5A output and always start charging the Universal.
So, I dont think the output power is the reason.
The most likely - it is the "5-th pin" issue, which is mentioned above here. Can somebody provide information about power connection for the Universal?
It seems the solution is about to interconnect/short circuit 2 wires in the car adapter' cable to make the Universal charging in a usual way with any of my (your) "non-working" car adapters.
Also, I've noticed, that in a case the battery level around 30% and I plug in the "non working adapter" and no red light and system not is in the "Charging" state -- the battery is charging anyway!
Also, let me remind you about another issue that the Universal have: Active Sync (older versions) would not sync (USB Device not recognized error) if you plug in the Universal if the power is On.
To workaround that you have to switch off the Universal, plug the cable and after that you could successfully sync. The same symptoms? May be the same reason?
I would advice anybody not to mess with interconnections in USB, I mean stop soldering and checking because its shortest road to bricking Your precious jasjar. It can be done with proper cable and you have to find the right one ;-)
Secondly - I found that jasjar Rom is also responsible for charging issues. As I stated earlier I finally found good usb cable but later on I lost an ability to charge Uni. in the car. After upgrading to the Aku3.2 rom it start to charge immidiatelly. Same charger and cable - one time it charge, second time it dont. So additionally to cable theres something with soft with preventing Uni. from charging.
man why is it such a complicated issue to get the universal to charge? and it seems that this charging problem only happens to the universal and not any other device, am i right?
nabuhonodozor said:
I would advice anybody not to mess with interconnections in USB, I mean stop soldering and checking because its shortest road to bricking Your precious jasjar. It can be done with proper cable and you have to find the right one ;-)
Secondly - I found that jasjar Rom is also responsible for charging issues. As I stated earlier I finally found good usb cable but later on I lost an ability to charge Uni. in the car. After upgrading to the Aku3.2 rom it start to charge immidiatelly. Same charger and cable - one time it charge, second time it dont. So additionally to cable theres something with soft with preventing Uni. from charging.
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YESSS! I Have upgraded to on of that Aku3.2 recently! May be it is the reason! But, my original Power adapter still charges my Uni so does the USB conndction to the laptop...
To ALL: Could you please confirm that you can use third-party adapters with the older ROMs?
hopefully we can get some updates soon.
Are all chargers alike?
Are all chargers the same? I would think that the USB power rating would be the same. So, I should be able to charge the Jasjar using a charger for a Motorola RAZR (if I weren't so afraid of blowing up the Jasjar)
Hi,
Just purchased a cradle for the universal which has a USB and an AC adapter connection.
The USB works fine for charging the Universal.
The AC Adapter connection on the other hand doesn't charge the PDA at all.
I thought I remember reading something concerning a fix for this but can't seem to find the post for it.
Any body got the solution for it or do I have a faulty cradle?
Thanks.
I would change usb cable
modem_man said:
Hi,
Just purchased a cradle for the universal which has a USB and an AC adapter connection.
The USB works fine for charging the Universal.
The AC Adapter connection on the other hand doesn't charge the PDA at all.
I thought I remember reading something concerning a fix for this but can't seem to find the post for it.
Any body got the solution for it or do I have a faulty cradle?
Thanks.
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Did you ever find a solution to this?, I have the desktop charger jobby. The grey one that looks like a docking station. It has an ac adapter and a usb out on it .. but like you the charger doesn't seem to work.
p.s its the one with the stylus that stands up straight at the back.
Nope.....
Never found a solution for it.
Dam...
Does your original jasjar/xda exec charger work? mine doesn't.. only my 5v dc 550ma motorola charger works ... oh and the usb direct cable works..
Does you pda charge while sat in the cradle with just the usb attached?
Here's what I have working:
FYI, I have the Qtek 9000.
Original Power Charger - working
Aftermarket Car Adapter charger from Proclip - working
Aftermarket Desktop Charger (AC powered) - NOT working
Aftermarket Desktop USB plug - working
Aftermarket USB cables - working (at least the ones I've tried = 3)
Joe,
I remember reading that you should be careful of what you plug in to power up your HTC-Universal because the voltage needs to be regulated.
Also, don't even go buy those Alkaline battery powered travel charger - they don't work. I even tried with a 9V Altoid Tin Battery Charger (with the required 5V USB regulator) and it didn't work.
I just gave up and carry 2 batteries with me. Planning on getting a bigger battery later on.
Hope that helps.
modem_man said:
Here's what I have working:
FYI, I have the Qtek 9000.
Original Power Charger - working
Aftermarket Car Adapter charger from Proclip - working
Aftermarket Desktop Charger (AC powered) - NOT working
Aftermarket Desktop USB plug - working
Aftermarket USB cables - working (at least the ones I've tried = 3)
Joe,
I remember reading that you should be careful of what you plug in to power up your HTC-Universal because the voltage needs to be regulated.
Also, don't even go buy those Alkaline battery powered travel charger - they don't work. I even tried with a 9V Altoid Tin Battery Charger (with the required 5V USB regulator) and it didn't work.
I just gave up and carry 2 batteries with me. Planning on getting a bigger battery later on.
Hope that helps.
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Click to collapse
Thanks for the reply,
Just checked on the web and the moto charger is regulated so it should be fine to use, I was thinking that my original charger may be buggered but because my new desktop charger doesn't work either I don't know what it could be. I'll need to try my cradle with just the usb attached tonight and see if it charges... if it does thats ok .. I can live with that.
My Cradle has a built in usb cable for the pc and a separate dc in socket for the wall adapter so unless it switches between the two i'm thinking that maybe the pins for charging are hardwired to the wall adapter and the data to the pc so it will only charge from the wall and not from the pc..
Maybe I shouldn't have bought such a cheap one
Joe,
I believe I might have the same cradle as you do.
I've open up the cradle to see how the connection is soldered and the points for the ground and powered seemed soldered into the USB port correctly.
I do remember reading something concerning the pins for the USB are wired differently (last 2 pins are shorted - on the Universal-wiki I think) for powered USB charge. Maybe that's why the cradle AC charger doesn't work while the USB cable works.
FYI, I've tried putting both the AC and the USB and you'll find that having the AC in is useless....you're just wasting electricity cos the PDA is still being charged by the cable (just turn off you PC and you'll find that the PDA is not charging).
Does your cradle have the annoying blue LED?
I think all aftermarket cradles are created equal = "CRAP"
If somebody out there have a cradle that have AC that works, please post where you bought it so that others will know which one to get.
modem_man said:
Joe,
I believe I might have the same cradle as you do.
I've open up the cradle to see how the connection is soldered and the points for the ground and powered seemed soldered into the USB port correctly.
I do remember reading something concerning the pins for the USB are wired differently (last 2 pins are shorted - on the Universal-wiki I think) for powered USB charge. Maybe that's why the cradle AC charger doesn't work while the USB cable works.
FYI, I've tried putting both the AC and the USB and you'll find that having the AC in is useless....you're just wasting electricity cos the PDA is still being charged by the cable (just turn off you PC and you'll find that the PDA is not charging).
Does your cradle have the annoying blue LED?
I think all aftermarket cradles are created equal = "CRAP"
If somebody out there have a cradle that have AC that works, please post where you bought it so that others will know which one to get.
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Click to collapse
Sounds like I have the same cradle as you fella , I've tried the usb on its own and it seems to charge ok .. I tested it by putting a movie on and leaving it plugged in, started at 67% its now 77% so its charging through the usb.. dam it .. I could probably send the cradle back since I wanted it mainly for AC charging. Wish there was another one I could get that worked!
Thinking of getting this one instead:
http://www.addonsworld.co.uk/product.php/28408/0/
What dya think?
joe....
According to this guy on this thread:
http://forum.xda-developers.com/showthread.php?p=1097137&posted=1#post1097137
his is working just fine.
If you can return it for another one, maybe you'll get one that's working properly.
i'm thinking maybe we have pda's from the same manufacture date.. and the hardware revisions are different and thats why our desktop chargers dont work, surely its not coincidence that both of ours dont work?
And if thats the case getting another of the same won't do much good.. theres just no way to be sure about any of this, think I may just send it back and try a different one entirely
Joe,
Good luck!
I have been trying to get hold of a working car charger for the Universal that would charge the phone while it is running navigational programs but to no avail.
If anyone has any for sale, do let me know.
vapor said:
I have been trying to get hold of a working car charger for the Universal that would charge the phone while it is running navigational programs but to no avail.
If anyone has any for sale, do let me know.
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Click to collapse
The car charger costs barely $5 in china and on ebay. It can be purchased from anywhere. I use the car charger that i got with my Holux GPS reciever. I have a lot of car chargers. This is how they work. You plug in your USB cord into the car charger and the car charger goes into the cigarette lighter in the car. I am not selling mine. Go get one from ebay. Just search on ebay for USB car charger.
nuclear said:
The car charger costs barely $5 in china and on ebay. It can be purchased from anywhere. I use the car charger that i got with my Holux GPS reciever. I have a lot of car chargers. This is how they work. You plug in your USB cord into the car charger and the car charger goes into the cigarette lighter in the car. I am not selling mine. Go get one from ebay. Just search on ebay for USB car charger.
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I have done so and the thing, its either I'm having bad luck with them or there's something wrong with my phone. The best I ever got was that it charged the phone when it was OFF but when I switched it on, the charge disappears.
I tried using my GPS's car charger and another USB Car Charger as well but they both do not work and I do not know why.
I have spent so much searching for the right car charger which is why I am so desperate now just to get a second hand one that would definitely work.
vapor said:
I have done so and the thing, its either I'm having bad luck with them or there's something wrong with my phone. The best I ever got was that it charged the phone when it was OFF but when I switched it on, the charge disappears.
I tried using my GPS's car charger and another USB Car Charger as well but they both do not work and I do not know why.
I have spent so much searching for the right car charger which is why I am so desperate now just to get a second hand one that would definitely work.
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I think you'll find this has been discussed here before, try searching.
FYI, I used the charger from my Holux GPS, and whilst it works, it dosn't charge whilst using TomTom. If you try a long trip with this setup, you will find that the battery charge drops. This charger is good only for topping up the Uni whilst not in use. I use the genuine iMate charger and this does run TT and charge at the same time. You need the higher amperage of the iMate charger.
Mav
mavrik64 said:
I think you'll find this has been discussed here before, try searching.
FYI, I used the charger from my Holux GPS, and whilst it works, it dosn't charge whilst using TomTom. If you try a long trip with this setup, you will find that the battery charge drops. This charger is good only for topping up the Uni whilst not in use. I use the genuine iMate charger and this does run TT and charge at the same time. You need the higher amperage of the iMate charger.
Mav
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Click to collapse
Nope, my car charger works fine in charging the Universal while in use and turned off. It just charges a bit slower while in use and thats quite an obious reason.
Only thing to consider is how much the output levels are of the car charger.
Thanks for your input guys
I have done my research on the car chargers and from my understanding, the only reason could be the shorting of pins 4 and 5, or something along those lines. Other than that, I have tried out various models of chargers and they do not work.
For those who say you need a higher output, I have tried those rated at 1000mAh which is that charger output for the wall unit. This charger connects to the USB cable yet even when I tried a couple of types of USB cables, it still did not charge the phone.
I also used a lower output of 850mAh and it worked fine with the cables tested abouve, so it shows the cable had no problem. But it could only charge the Universal when the phone was turned off. When switched on, the phone does not even charge, not even in the least bit and I am not sure why. Surely 850mAh is more than enough to get it charging while on the navigational (TomTom) programs because when I connect my Universal to my laptop to charge, I am still able to run TomTom and that charge is only rated at 500mAh.
Thus you can see why I am so frustrated with all these charges. If any of you are able to point me in the direction of getting an original chrager online, I would be more than grateful for your help and guidance. I also wouldn't mind buying a third-party charger as long as it works perfectly with the phone when running nagivational programs.
This is the one i have. works brilliantly, charges universal and BT GPS reciever and lets me use my copilot navigation software.
http://www.easydevices.co.uk/sp/searchbox13/products.asp?partno=MTCUSJASJR
http://www.mdapro.co.uk/shop/xcart/T-Mobile-MDA-PRO-Handsfree-Custom-Car-Kit-with-speaker-pr-36.html
vapor said:
Thanks for your input guys
<snip>
I also used a lower output of 850mAh and it worked fine with the cables tested abouve, so it shows the cable had no problem. But it could only charge the Universal when the phone was turned off. When switched on, the phone does not even charge, not even in the least bit and I am not sure why. .
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Well, I can only guess the 1000mAh you tried may have been defective???
My car charger is the iMate genuine car charger. This rated at 1000mAh and works great. It charges and runs TT6 no problem. (well, that was untill it packed up the other night so I'm sending back under warranty) But it did work great.
All the best
Mav
Poundland have a USB car adapter that works perfectly with your USB lead to charge the Exec - works fine on mine!
mavrik64 said:
Well, I can only guess the 1000mAh you tried may have been defective???
My car charger is the iMate genuine car charger. This rated at 1000mAh and works great. It charges and runs TT6 no problem. (well, that was untill it packed up the other night so I'm sending back under warranty) But it did work great.
All the best
Mav
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I thought that could be the case but it charges my GPSr fine so had to strike that one out.
wassa said:
This is the one i have. works brilliantly, charges universal and BT GPS reciever and lets me use my copilot navigation software.
http://www.easydevices.co.uk/sp/searchbox13/products.asp?partno=MTCUSJASJR
http://www.mdapro.co.uk/shop/xcart/T-Mobile-MDA-PRO-Handsfree-Custom-Car-Kit-with-speaker-pr-36.html
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Click to collapse
Hi Wassa you se co pilot - so do i - so please can you tell me what onthe easy devices what you chose for the correct cable that will owrk with the bluetooth gps unit.
cheers mate - thanks for your help.
lr
re: car charging problems
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
mickey_jaw said:
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
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Click to collapse
nah I do not smoke so I do not see why it should be happening.
mickey_jaw said:
just one thing to ask: are you a smoker?
I only say this because i use a usb car charger and it only charges faster than it drains if you are careful to blow/clean all the fag ash out of the socket in the car to get a good connection. Otherwise the charging led sometimes comes on but cant supply enough power to charge quicker than my universal drains its battery
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Click to collapse
I never get ash in there. Its impossible to get ash in there unless you really want it there. You are supposed to use the knob and not stick your cig in there. lol
I have used a Belkin one, one that I bought for an iPod that has a standard USB socket you can plug any cable into, and a cheap ebay one.
They all work, BUT.. you have to plug them in when the device is off. Once the charge light comes on, you can turn it on, and it will charge, although slowly.
If you plug it in while the device is on, it will not start charging.
I don't know why this is, but considering it's the same on all 3 chargers, and I have seen people complaining about this on the Universal a few times, I think it's just the way things are.
AlanJC said:
I have used a Belkin one, one that I bought for an iPod that has a standard USB socket you can plug any cable into, and a cheap ebay one.
They all work, BUT.. you have to plug them in when the device is off. Once the charge light comes on, you can turn it on, and it will charge, although slowly.
If you plug it in while the device is on, it will not start charging.
I don't know why this is, but considering it's the same on all 3 chargers, and I have seen people complaining about this on the Universal a few times, I think it's just the way things are.
Click to expand...
Click to collapse
Yup because at first i was wondering too why my device isnt charging. Actually the charge light on my GPS came on quicker than the Universal.lol... i had to wait for a few moments and kept trying till the universal began charging. So yeah you gotta wait with the universal shut off.
I have not bothered reading all the replies but the problem with most car chargers is the AMPS, the voltage is right @ 5 volts but the amps is usually 0.5. Ideally the universal needs 1 or 2 amps, the new tomtom standalone units use 2 Amp USB car chargers and are a direct fit for our universals !!! isnt that convenient.
I don't have a charger as such but I use - strangely enough - a sony psp usb cord that goes through a USB cigarette adapter picked up from a poundshop here in UK ( a shop that sells lots of cheap gadgetry - for the non british of you )that also has a connector that is exactly what is needed for my fortuna bluetooth . it works fine . I realise that it does not recharge the phone but keeps it charged . I've not tried the usb to usb mini through the usb lighter adapter though . I guess that the trick its to have a charged universal before you leave on a trip .
I found I was having trouble charging my Universal with a USB adaptor in the car. The "charging" light would only come in if the phone was off, and while it would stay on when the phone turned on, it would not actually be charging and the damned thing would eventually run out of charge (I drive lots).
I eventually realised that if I turned the screen brightness down to it's lowest illumination whilst charging it worked fine. Obviously not much power comes out of the socket...
Now my battery has packed up due to another issue, but turn the screen down and it should be fine.
Voltage Regulator 5v / 2a /
I have read with interest all the comments and solution here and thought it might help to add mine what I have made and fitted to all my vehicles is a mini USB power supply, simply cut the pc plug from a mini USB lead and add one UA 78S05
VOLTAGE REGULATOR 5V / 2A /
http://www.donberg.ie/descript/u/ua78s05.htm
Connect the input leg to 12 v dc bolt the regulator to a GOOD earth/heat sink (car body) and off you go up to 2 amps @5v BUT DO TEST WITH VOLT METER BEFORE CONNECTING PPC
I have found that when charging my HTC phone (Kaiser now, used to be a Blue Angel) in my car, if I use a cigarette lighter splitter (So that I can charge another device too) that even if nothing else is plugged into the splitter, the phone will not charge properly. It seems to get enough power to maintain charge, but if I am low on batt, then charge the phone and use it for satnav while I drive, when I finish the journey, the phone has not charged.
This does not seem to be the case if I plug the phone charger directly into the cigarette lighter socket instead of via the splitter.
Knowing a little about electricity, I guess the splitter is running the sockets in parallel or something and dividing the power between the sockets?
Any ideas on what I could do? I would imagine a car battery has plenty of power, maybe it just isn't being distributed properly. I guess the splitter is possibly limited such that it can't pass too much power if only one device is connected?
All the devices I want to use can power from USB, so I am guessing that the solution is maybe a USB hub designed for car use. I have 3 items typically that I want to be able to charge, so a 4 port hub would be nice. Anyone know where to get one in the UK?
I've got the same issue with my car charger (HTC Mogul phone), although for me it doesn't matter whether I use a splitter. Where did you get your charger? Maybe it just isn't supplying enough power.
While it's true that having two devices in parallel causes half the current to flow to one and half to the other (assuming they have the same resistance), the power supplies should be more than capable of pushing enough current for each device, especially when the car is running (and you're getting your electricity off the alternator).
well I thought it could be a dodgy cable but I just got an official HTC car charger for my kaiser and am observing the same thing.
It could have been the cigarette lighter->USB converter or the retractible sync cable I used to use, I will do some more tests and see if I can work out which bit is causing the problem - it wasn't until just recently that I had an official end-to-end solution (ie one HTC car lighter to miniusb cable) so I will try connecting it up various ways, but it isn't exactly quick to test if it is good or not as you need your phone low on batt and to be driving around for an hour or two to see if it is charging properly.
Flat Batteries
Seems XDA has software to prevent charging batteries which are too flat. (Perhaps to protect internal circuitry).
I recommend this thread which has a solution:
http://www.htcwizardweb.net/node/2013#comment-3808
I made it work OK but it is a fiddly job. An external charger for these batteries would be great but I can't find one.
Good luck !
I have the same issue. The battery has refused to charge when its below 40% or so. I now carry a spare in the car, especially as I often depend on Sat nav working!
yeah I had that low batt thing happen with my BA once or twice.
Actually, now I have kept an eye on it, it doesn't seem that bad with my kaiser. I no longer use my car lighter usb adapter though - I use the HTC car charger into a 3-in-1 splitter (usb, extusb, 3.5mm audio) and from that into my Kaiser and it seems to charge the kaiser ok (albeit a little slowly) even when I have a cigarette lighter splitter also powering an RF transmitter.
So I think maybe the weak link was the car lighter to usb adapter, maybe it was outputting too little power on the USB rails.
Car Charger died
I'll jump on an old thread...
My HTC branded car charger (that I got from sending in the post card) worked fine for my Cingular 8525 until a few weeks ago. Then it got flakey and now it doesn't want to work at all.
My 8525 will still charge on my laptop connected cradle and the AC charger.
Has anyone seen any failures in these chargers?
Any recommendations on chargers that are reliable?
Dave.