Related
Anyone saw this yet? It is pretty expensive though, lol:
http://www.amzer.com/Amzer-3500-mAh-Battery-Backup-Solar-Charger-P83981.htm
I saw this on Fommy.com and was thinking about getting it.
How exactly does it work?
Does it charge it's own battery if not plugged in to the phone, then later when there is no sun you can charge your phone of the charged battery?
If so, that is kinda bad ass.
Yeah I think that is how it does work. If not, than that price is not worth it, lmao. Hopefully it works as how you described it though.
BigWorldJust said:
Yeah I think that is how it does work. If not, than that price is not worth it, lmao. Hopefully it works as how you described it though.
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That is exactly how it works. It has a 3500 mAh battery battery built in. For comparison the Vibrant comes stock with a 1500 mAh battery.
That's actually not a bad price, considering that a 2500 mAh Innocell from Seidio will cost you about the same. The Innocell is an internal battery with a replacement back cover. I was going to get one but I'll probably get the Amzer now.
For comparison shopping you can go to ThinkGeek dot com and search for "solar charger" to find the 4 or so they sell. They even have a $200 for laptops.
Follow instructions for usage. Do not overheat or overexpose the Amzer Solar Charger to direct or indirect sunlight and AC/ USB charge.
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WTH? Do not expose to direct sunlight? How is it a solar charger then? Idiotic legal disclaimers. This one's right up there with "Do not insert screwdriver into eye."
Nice. So basically it is worth it?
I say it depends. If I need more batteries I'd rather get them separately and have a charger specifically for it like the ones you can find on ebay.
Taking out the old battery and popping in the new one only takes a minute while charging from a solar battery could take who knows how long.
Col.Kernel said:
That is exactly how it works. It has a 3500 mAh battery battery built in. For comparison the Vibrant comes stock with a 1500 mAh battery.
That's actually not a bad price, considering that a 2500 mAh Innocell from Seidio will cost you about the same. The Innocell is an internal battery with a replacement back cover. I was going to get one but I'll probably get the Amzer now.
For comparison shopping you can go to ThinkGeek dot com and search for "solar charger" to find the 4 or so they sell. They even have a $200 for laptops.
WTH? Do not expose to direct sunlight? How is it a solar charger then? Idiotic legal disclaimers. This one's right up there with "Do not insert screwdriver into eye."
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Click to collapse
direct sunlight means lots of heat (over 100F on a good summer day), lots of heat is not good for batteries. solar charger does not mean it charges from sun.......it needs any light source.
Follow instructions for usage. Do not overheat or overexpose the Amzer Solar Charger to direct or indirect sunlight and AC/ USB charge.
LOL
kolyan said:
direct sunlight means lots of heat (over 100F on a good summer day), lots of heat is not good for batteries. solar charger does not mean it charges from sun.......it needs any light source.
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lol.
mini semi scientific answer: they use heat to turn into electricity, and it's not that efficient, but it's enough to work (and gets better every year).
So sure, any light source might work, but something other than the sun will basically not work that well. Having it in a lighted room will do zero for it, for example.
designerfx said:
lol.
mini semi scientific answer: they use heat to turn into electricity, and it's not that efficient, but it's enough to work (and gets better every year).
So sure, any light source might work, but something other than the sun will basically not work that well. Having it in a lighted room will do zero for it, for example.
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yeah, but there is a battery in side as well. if it was just a solar charger then yes, more sun = better
I saw a similar product on Dealextreme for much cheaper. From the feedback the important thing is to find out if the charging current is at least 700mA. If not the Vibrant might not be charged properly.
Here are the ones from DE: http://www.dealextreme.com/products.dx/category.1101~search.solar usb charger
designerfx said:
lol.
mini semi scientific answer: they use heat to turn into electricity, and it's not that efficient, but it's enough to work (and gets better every year).
So sure, any light source might work, but something other than the sun will basically not work that well. Having it in a lighted room will do zero for it, for example.
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Click to collapse
A solar cell does NOT use heat to produce electricity, it uses light waves. Full spectrum light is the most efficient but any light source will work.
The waves impact the cell and cause a potential difference on the diode, this then creates a current in the cell. Heat is actually BAD for solar cells, the cooler they are the more current they produce. This is one of the reasons that solar panels in snowy environments can produce more electricity than cells in the south. Reflected light off the snow is another reason.
sfsilicon said:
I saw a similar product on Dealextreme for much cheaper. From the feedback the important thing is to find out if the charging current is at least 700mA. If not the Vibrant might not be charged properly.
Here are the ones from DE: http://www.dealextreme.com/products.dx/category.1101~search.solar usb charger
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Click to collapse
It's cheaper because you get less. 1800 MAh as compared to 3500 MAh storage.
I looked up the reviews of the Amzer solar one on amazon and it didn't look too promising.
I decided to get this one (no solar):
And for those in windy areas...
kizer said:
Follow instructions for usage. Do not overheat or overexpose the Amzer Solar Charger to direct or indirect sunlight and AC/ USB charge.
LOL
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Click to collapse
People, the warning is not to put it in sunlight. It is to not put it in sunlight AND have it plugged into the AC/USB charger — thus providing 'double' charging.
Solar or not
<$20
You might want to look for one that includes a std usb adapter so you can use it w the oem cable for whatever phone/gadget, or get an Amzer mini-to-micro usb adaper for $5 (and get an adapter for your future phone, too).
But yeah. $70 is a little steep. I'd rather get two of these. You could get 4 for that price.
Edit: Im liking this. It says the battery can be replaced, and it doesn't say with what,exactly, but it looks AA sized to me. It has all the adapters, the port you plug your phone into is usb (yeah, you could probably scrap the cable and the adapters), and it looks like it chrges via the same port. None of these parts is entirely enticing, but the stuff in the bag, not to mention the bag, is a MacGyver use-for-everything in whatever way you need package. I think part of the appeal to me is the mystery as to whether it really is as all-purpose as I think it is. I love this kind of Asian innovation. I'm very tempted to support it. If I do, I'll report back.
OK, while I'm at it: $7, free shipping, with std usb so you can use your OEM cable.
Amzer sells a lot of overpriced stuff, this is one of many
solar chargers
Well i was looking for one and i got from dealextreme , but after 3 months, its not charging properly. Not sure why?! My brother got for me one and its good, he said he got from Chinabuye, its online store from China. Good battery life. so far so good.
Amzer is JUNK
Amzer makes JUNK. Purchased their junk before and it's not worth it even if it was free.
The owner of Amzer, basically gets Chinese manufacturers to make his junk and label it Amzer. His products are the same junk you can find on ebay for 50 cents.
This is BS.
I was just wondering whether external batteries are generally quite reliable, and if so what the best brands are to go for? I am looking for a relatively powerful one - I am not afraid of a little bit of cost, but obviously I don't want to spend masses.
Thanks
Ive got a New Trent and its well built and reliable. The 11000mAH will last you for several days. Have a look on Amazon.
I have a "Just Mobile Pro" or something like that.
4400mAh with 1000mA output.
But the EasyAcc 5600mAh (which I don't have) does sound better and cheaper (on Amazon).
Second new trents 11000mah one that thing is a beast
Chartist said:
Ive got a New Trent and its well built and reliable. The 11000mAH will last you for several days. Have a look on Amazon.
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24inchsub said:
Second new trents 11000mah one that thing is a beast
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yeah i got that bad boy too and its a beast. well worth the price
Chartist said:
Ive got a New Trent and its well built and reliable. The 11000mAH will last you for several days. Have a look on Amazon.
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Click to collapse
Thanks not heard of New Trent before. Looks good. Can you confirm it's output charging current though? I can't find the spec on it anywhere. I'm assuming it's the full 1A, as it says it can charge an iPad, but could you please confirm? Looks like I'll be needing one!
Cheers.
wnp_79 said:
Thanks not heard of New Trent before. Looks good. Can you confirm it's output charging current though? I can't find the spec on it anywhere. I'm assuming it's the full 1A, as it says it can charge an iPad, but could you please confirm? Looks like I'll be needing one!
Cheers.
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i can try to charge my ipad when i get home haven't tried actually.
I bought the Anker 5600mAh battery for my HTC Desire. Great quality, compact and it fits in my pocket very nicely. I bought it for $30 on ebay
http://www.ianker.com/products_astronew.html
gordongartrell said:
I bought the Anker 5600mAh battery for my HTC Desire. Great quality, compact and it fits in my pocket very nicely. I bought it for $30 on ebay
http://www.ianker.com/products_astronew.html
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Flashlight feature's a nice touch.
isound portable external battery. Has built in flashlight too. Comes in two flavors, 16000mah and 8000mah.
If you look around you can find it cheaper elsewhere
http://www.isound.net/shop-by-type/accessories/i-sound-portable-power-16000-mah.html
Zagg Sparq 2.0 6000mah. Not worth the $100. Went on sale for $50 before..
Love the design and its built it power plugs. Loses charge over time. Google user reviews.
http://www.zagg.com/accessories/zaggsparq.php
knoxploration said:
Flashlight feature's a nice touch.
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It's good and bad . I was on the train heading home from work and I was charging my phone with the Anker charger. I accidentally pressed the power button twice and the flashlight turned on. Sitting across from me was this fairly attractive woman with a skirt on. She automatically crossed her legs and looked at me weird. I hope she doesn't think that i'm a pervert.
gordongartrell said:
It's good and bad . I was on the train heading home from work and I was charging my phone with the Anker charger. I accidentally pressed the power button twice and the flashlight turned on. Sitting across from me was this fairly attractive woman with a skirt on. She automatically crossed her legs and looked at me weird. I hope she doesn't think that i'm a pervert.
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Click to collapse
Hah! Good thing I didn't have a mouthful of soda there...
Good thing to remember with external battery packs is that during usage some of the charge goes to charging the battery while some is lost in heat. I think I read some where its normaly 30-40%. So for example a 11000mah battery will give you some where near 6600mah of charge so about 3 and half charges of the HTC One X.
I'm considering either the:
TeckNet® iEP387 7000mAh Dual-Port 2.1Amp Output Universal USB Battery Bank
http://www.amazon.co.uk/gp/product/...&pf_rd_t=101&pf_rd_p=467128533&pf_rd_i=468294
New Trent iCruiser IMP1000 11000mAh External Battery Pack
http://www.amazon.co.uk/gp/product/...&pf_rd_t=101&pf_rd_p=467128533&pf_rd_i=468294
Although not 100% sure I need either at the moment
HTC-Gunge said:
Good thing to remember with external battery packs is that during usage some of the charge goes to charging the battery while some is lost in heat. I think I read some where its normaly 30-40%. So for example a 11000mah battery will give you some where near 6600mah of charge so about 3 and half charges of the HTC One X.
I'm considering either the:
TeckNet® iEP387 7000mAh Dual-Port 2.1Amp Output Universal USB Battery Bank
http://www.amazon.co.uk/gp/product/...&pf_rd_t=101&pf_rd_p=467128533&pf_rd_i=468294
New Trent iCruiser IMP1000 11000mAh External Battery Pack
http://www.amazon.co.uk/gp/product/...&pf_rd_t=101&pf_rd_p=467128533&pf_rd_i=468294
Although not 100% sure I need either at the moment
Click to expand...
Click to collapse
The heat loss is inevitable but the capacity should be unchanged.
What the heat loss means is that you need more than 11000mAh to charge up the full 11000mAh battery due to the losses.
The tecknet is very good value. I am considering it at the moment
tsleng said:
The heat loss is inevitable but the capacity should be unchanged.
What the heat loss means is that you need more than 11000mAh to charge up the full 11000mAh battery due to the losses.
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Click to collapse
Yes but I'm talking about in the other direction. So once you have 11000mAh in the device and you charge a device that take 1800mAh you will actually use aprox 2520mAh in doing so. My numbers and calculations maybe a little flawed but my point is that you cant do a simple 11000 / 1800 = 6.1 charges as you need to take into account heat loss which is around 30 - 40% (so I read on one of the amazon reviews)
Either way both devices are nice and cost quite reasonable.
Hampa_D said:
i can try to charge my ipad when i get home haven't tried actually.
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tried it with my ipad last night and it worked great, it worked as if it was on AC
Have got the Tecknet IEP987 7000mah battery myself. Has run through two charges of a sensation XL and my Fiio Headphone amp, and still around half full.
Am more than happy with it.
HTC-Gunge said:
Yes but I'm talking about in the other direction. So once you have 11000mAh in the device and you charge a device that take 1800mAh you will actually use aprox 2520mAh in doing so. My numbers and calculations maybe a little flawed but my point is that you cant do a simple 11000 / 1800 = 6.1 charges as you need to take into account heat loss which is around 30 - 40% (so I read on one of the amazon reviews)
Either way both devices are nice and cost quite reasonable.
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Click to collapse
Ah yes of course. Did not realise you were talking about the other way round charger>>phone
Not sure how efficient but if say 10% loss, we still get around 5 times charge with a 11000mAh batt. to a One X.
I am leaning towards the 7000mAh. Not sure if I need it or not...
tsleng said:
Ah yes of course. Did not realise you were talking about the other way round charger>>phone
Not sure how efficient but if say 10% loss, we still get around 5 times charge with a 11000mAh batt. to a One X.
I am leaning towards the 7000mAh. Not sure if I need it or not...
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Click to collapse
Also don't forgot not to simply divide the battery pack's capacity by your phone's battery capacity to see how many times it will charge, unless you are charging it with the phone turned off.
With the phone on it is obviously using the usual amount for running the phone, whilst it is being charged. Add the current being drawn for keeping the phone running (say 250mA when awake) for the time it takes to charge (for me 2 hours) and you are looking at 500mAH. Add that to the capacity of your phone battery before dividing it by the capacity of your battery pack to figure out how many charges you'll get from it. Figures used are just for example purposes. Use a current widget if you want to know how much your phone is using.
Plus like a phone's battery, a new battery pack will take several charge cycles to reach full performance. Where as with a phone's battery which only takes about 2 weeks (charging it every day), a battery pack will take that much longer to get the full performance out of, as you wont likely be charging it more than once a week/month.
And then there's the battery indicators. These New Trent ones look sensible, but I once purchased a Proporta Turbocharger 5000mAHr unit. It had three blue LED battery status lights that were always on if charging. If you looked directly at them they'd burn your retinas out your skull. They could be seen from space. Stupidly and comically bright. They HAD to eat into some of the capacity.
Copper losses over the cable at the distances involved in your average charging cable will be negligible. If you really want to reduce it, don't use those silly skinny retracting yo-yo charging cable things that some of them come with. Use a decent quality USB to microUSB cable. The higher the guage of the cable and quality of copper, the less volt-drop there is. I keep a good few of these kicking about at home as they are well made but not too costly, and come with a nice cable tidy clasp...http://www.ebay.co.uk/itm/GENUINE-NOKIA-CA-101-CA101-USB-DATA-CABLE-LEAD-5230-/140579882085?pt=UK_MobilePhones_MobilePhoneAccesories_MobilePhoneDataCables_JN&hash=item20bb36c465
fi3ry_icy said:
since the battery isnt gonna be removable, i am currently considering buying a portable charger..
here are some i found.. would like an opinion on which capacity would be good..
http://www.netimes.com/shop/power-master-9600mah-portable-mobile-power-p-3052.html?cPath=445_711
http://www.netimes.com/shop/2000mah...pack-with-led-light-p-3264.html?cPath=445_711
http://www.netimes.com/shop/dualport-5000mah-external-battery-pack-p-3109.html?cPath=80_731
http://mobilemate.yetaa.com/accessories/pineng-5000mah-power-bank.html
the last link has the same capacity as the 2nd last but it is way cheaper.. is it safe?
Click to expand...
Click to collapse
here u go..
posted this in another thread..
cheers..
Ran a quick search and didn't turn up much. Does anyone have advice or know where to get a solid deal on a portable charger? I've got to spend a lot of time in the airport/on planes in the next few months so something like this would be ideal. I found this:
http://www.amazon.com/gp/product/B00BJCHH36/ref=wms_ohs_product?ie=UTF8&psc=1
Looks pretty solid for a decent price. Anything better out there?
brholt6 said:
Ran a quick search and didn't turn up much. Does anyone have advice or know where to get a solid deal on a portable charger? I've got to spend a lot of time in the airport/on planes in the next few months so something like this would be ideal. I found this:
http://www.amazon.com/gp/product/B00BJCHH36/ref=wms_ohs_product?ie=UTF8&psc=1
Looks pretty solid for a decent price. Anything better out there?
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Click to collapse
I'd just be nervous about the brand. Never heard of it, and it does matter as far as how long the battery is going to last, both in terms of time before the thing doesn't take a charge/only holds a small fraction of what it used to, as well as how much of the rated capacity you are really getting. This one is name brand, and would be worth the extra 20 bucks, and has some extra capacity as well. It also charges off of micro USB, though they one you linked may as well, I just didn't see it on the main page.
http://www.amazon.com/Astro3-12000m...-Port-Highest-Energy-efficiency/dp/B00CEZBKTO
TriBeard said:
I'd just be nervous about the brand. Never heard of it, and it does matter as far as how long the battery is going to last, both in terms of time before the thing doesn't take a charge/only holds a small fraction of what it used to, as well as how much of the rated capacity you are really getting. This one is name brand, and would be worth the extra 20 bucks, and has some extra capacity as well. It also charges off of micro USB, though they one you linked may as well, I just didn't see it on the main page.
http://www.amazon.com/Astro3-12000m...-Port-Highest-Energy-efficiency/dp/B00CEZBKTO
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Click to collapse
I think that one may have won me over.
brholt6 said:
I think that one may have won me over.
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Click to collapse
I've had their batteries before, and they tend to be pretty good. Much better than some of the no name stuff you can get. Plus, you can charge a third device.
http://www.amazon.com/gp/aw/d/B00BF...qid=1385247215&sr=8-10&pi=AC_SX110_SY165_QL70
I'm going with this one. They also have a 7000mah model.
I went with this one simply because I liked the style and it was small.
There is a bigger one too. Not the cheapest but has held up well for
over a year now. All of these are essentially a big battery so you
probably can't go wrong with any one that has good reviews.
http://www.amazon.com/Mophie-Powerstation-4000mAh-External-BlackBerry/dp/B005OW4BFE/ref=sr_1_2?s=wireless&ie=UTF8&qid=1385493980&sr=1-2&keywords=mophie+juice+pack
Amazon has the best deals
I would stick with Jackery
I like Jackery batteries. They work just as well as any other portable battery out there, but they have the added bonus of just looking nice (all models come in orange, some also come in silver and black). Some of the larger capacity models also had an onboard LED flashlight function. The flashlight function isn't great (it's about as bright as a keychain flashlight), but it makes sense to add a flashlight function to something that is already a battery.
I have this one: http://amzn.com/B00AANMVNQ
It has a 5600mAh capacity (the One's battery is 2300mAh). It only has a single port, but the port can put out 2A if you need to charge larger devices.
check out Anker for portable batteries. I have the 10000 mah model and it is great. has two ports for android or iphone. can charge both at same time. it was only 39.99 http://www.amazon.com/10000mAh-Smar...ers-Lightning/dp/B009USAJCC/ref=pd_sim_cps_49
I am currently using this one
http://www.amazon.com/Samsung-Unive...id=1385714580&sr=1-1&keywords=samsung+9000mah
(Samsung 9000mah portable battery pack)
it charges my HTC One thrice and i am quite satisfied with the product!
Tenergy 2600 was on sale at frys for $10 on black Friday. Picked up one blue and one black. Blue looks cool in that it's similar in color to my one
Sent from my HTCONE using Tapatalk
Ebay has so many kinds of these power banks with huge sizes. I doubt that is real, so i wanted to ask if anybody has reasonable size (not over 3k or 4k mAh), that is safe and not made in China?
Buying something Chinese is really bad, literally every thing i have from china has broken in the first day. And i do not want to buy something electronic like that battery pack from china that could explode or something. All i need is a power pack that could charge around 75% of my battery. I do not need some huge thing. I simply can not get my phone to last throughout a normal school day on normal usage.
Look at the ones Anker offers. They are not cheap but worth every cent.
I have got a large one with about 6000 mAh. But they have also got smaller ones.
Most of their batteries are able to deliver high charging currents, which enables you to charge your phone just as fast as on AC power.
I can really recommend Anker.
Sent from my Nexus 5 using XDA Free mobile app
nikssims said:
Ebay has so many kinds of these power banks with huge sizes. I doubt that is real, so i wanted to ask if anybody has reasonable size (not over 3k or 4k mAh), that is safe and not made in China?
Buying something Chinese is really bad, literally every thing i have from china has broken in the first day. And i do not want to buy something electronic like that battery pack from china that could explode or something. All i need is a power pack that could charge around 75% of my battery. I do not need some huge thing. I simply can not get my phone to last throughout a normal school day on normal usage.
Click to expand...
Click to collapse
Though I read your "no china" criteria, I would still suggest you to try out the Mi Power Bank. I have been using it for almost 4 months now, and although I had my own reservations regarding a Chinese product that could (literally) kill me, it has been terrific till date. It charges up the phone at almost the same rate as the wall charger, and it itself charges up pretty fast. Comes in two sizes- 5200 mah and 10400 mah. The 5200 mah power bank is what I have, and it is sufficient to fully charge my N5 and charge a Grand 2 upto 20-25%. Plus, it is a lot cheaper that the power banks made by Sony and likes.
Btwn..It actually comes from Xiomi, the makers of Mi3 which has been one of the most successful phones in 2014. This is the only thing I relied on while getting the power bank, and boy am I happy with it.
I didnt knew sony makes power banks too, and thanks for suggestions!
Also, during decharging, does the power bank heats up? (When i charge my phone with the power bank)
nikssims said:
I didnt knew sony makes power banks too, and thanks for suggestions!
Also, during decharging, does the power bank heats up? (When i charge my phone with the power bank)
Click to expand...
Click to collapse
No it does not. You can see some YouTube reviews if that helps you. Not sure if you are bothered about it but the finish of the body is the best I have seen on power banks.
FYI
I have NEWNOW power bank. I can charge my n5 for about 5 times completely. Its capacity is 10400mAh. Has 1A and 2,1A charging ports. With the 2,1A port charges my phone fully in about 15-25 minutes. Highly recommend!
http://www.newnow.com/products/newn...ry-usb-power-bank-charger-for-cell-phone.html
EDIT: also there's flashligt! Not sure why, and who needs, but there is
xadidas said:
I have NEWNOW power bank. I can charge my n5 for about 5 times completely. Its capacity is 10400mAh. Has 1A and 2,1A charging ports. With the 2,1A port charges my phone fully in about 15-25 minutes. Highly recommend!
http://www.newnow.com/products/newn...ry-usb-power-bank-charger-for-cell-phone.html
EDIT: also there's flashligt! Not sure why, and who needs, but there is
Click to expand...
Click to collapse
It's impossible to full charge the phone in less than 30minutes, certainly not at 2.1A.
Also that looks like a cheap Chinese charger to me. When you see 10,000 maH ($20) for less than the price as most 5000mAh you can assume that they lied about the specifications.
Xiaomi asks 19$ to ship Mi Power Bank to Romania from its European hq! Isn't that a little bit too much?
I've read through this thread because I have the same question. Are there any power banks actually not made in China once you scratch all the "it's made in China BUT" comments?
nikssims said:
Ebay has so many kinds of these power banks with huge sizes. I doubt that is real, so i wanted to ask if anybody has reasonable size (not over 3k or 4k mAh), that is safe and not made in China?
Buying something Chinese is really bad, literally every thing i have from china has broken in the first day. And i do not want to buy something electronic like that battery pack from china that could explode or something. All i need is a power pack that could charge around 75% of my battery. I do not need some huge thing. I simply can not get my phone to last throughout a normal school day on normal usage.
Click to expand...
Click to collapse
They are chinese, but Anker has really good build quality and quality control.
Hello everybody, first post on XDA!
I am planning to mod my Nexus 5 battery. Considering that the dimension of the original battery is 57mm*60mm, I planned to buy 4 Sanyo 3,7V 840mAh and connecting them in parallel. I would like to post links but as a newbie I am not allowed to do so.
These are 14mm in diameter and 50mm long, meaning that 4 of them would be packed in 56mm*50mm, with 10 extra free mm where I can comfortably fit the "charging board" that I can unsolder from the old original battery. The problem here is that the charging board will probably have more than 2 pins, the others being for temperature and data. How can I deal with them? I haven't teared my battery yet, so I cannot see how the chip really looks like. Does someone know whether the data pins end up in the circuitry or are they somehow connected to the battery itself? Because in this latter case I would really have no idea how to deal with these extra pins...
In addition how will the circuitry and the phone itself deal with the increased capacity? Should I tell the phone the capacity has changed or will it auto adapt? I have read tons of posts on this topic, all saying different things...
Certainly that will increase the phone thickness and I plan on 3D printing a custom designed back-cover. Luckily the original 3D model is downloadable from GrabCAD for free, that is a good starting point. What material would you suggest me to print it in? PLA, ABS, Nylon?
Furthermore, I am planning to add a nerdy solar cell 4v, 35mA that will certainly do basically nothing except help in real emergency charging the phone while off, but it will give an awesomly nerdy look. The solar cell I am talking about is 32mm*39mm and would perfectly fit on the right of the camera.
I could fit a 100mA solar panel, or avoid the battery mod at all and just fit 5 of those solar panel for a summed max current of 175mA...
I plan charging the battery with direct connection of the solar panel to it through a diod. The only thing that worries me is that while 35mA are less than what the phone draws during standby, the battery indicator will never go crazy seing the battery tension growing while no charger is plugged in. On the other hand, higher currents, will actually be able to actively recharge the phone creating confusion to the phone that would not be able to realize what is going on. To avoid that I should connect the solar panels to the usb charging port. That would put the phone into charging mode and thus in a energy hungry more that could again cause battery to drain instead of charging or anyway to charge incredibly slow.
If someone is interested in this project and has suggestions of any kind I will appreciate and I will share the results.
pilitio said:
Hello everybody, first post on XDA!
I am planning to mod my Nexus 5 battery. Considering that the dimension of the original battery is 57mm*60mm, I planned to buy 4 Sanyo 3,7V 840mAh and connecting them in parallel. I would like to post links but as a newbie I am not allowed to do so.
These are 14mm in diameter and 50mm long, meaning that 4 of them would be packed in 56mm*50mm, with 10 extra free mm where I can comfortably fit the "charging board" that I can unsolder from the old original battery. The problem here is that the charging board will probably have more than 2 pins, the others being for temperature and data. How can I deal with them? I haven't teared my battery yet, so I cannot see how the chip really looks like. Does someone know whether the data pins end up in the circuitry or are they somehow connected to the battery itself? Because in this latter case I would really have no idea how to deal with these extra pins...
In addition how will the circuitry and the phone itself deal with the increased capacity? Should I tell the phone the capacity has changed or will it auto adapt? I have read tons of posts on this topic, all saying different things...
Certainly that will increase the phone thickness and I plan on 3D printing a custom designed back-cover. Luckily the original 3D model is downloadable from GrabCAD for free, that is a good starting point. What material would you suggest me to print it in? PLA, ABS, Nylon?
Furthermore, I am planning to add a nerdy solar cell 4v, 35mA that will certainly do basically nothing except help in real emergency charging the phone while off, but it will give an awesomly nerdy look. The solar cell I am talking about is 32mm*39mm and would perfectly fit on the right of the camera.
I could fit a 100mA solar panel, or avoid the battery mod at all and just fit 5 of those solar panel for a summed max current of 175mA...
I plan charging the battery with direct connection of the solar panel to it through a diod. The only thing that worries me is that while 35mA are less than what the phone draws during standby, the battery indicator will never go crazy seing the battery tension growing while no charger is plugged in. On the other hand, higher currents, will actually be able to actively recharge the phone creating confusion to the phone that would not be able to realize what is going on. To avoid that I should connect the solar panels to the usb charging port. That would put the phone into charging mode and thus in a energy hungry more that could again cause battery to drain instead of charging or anyway to charge incredibly slow.
If someone is interested in this project and has suggestions of any kind I will appreciate and I will share the results.
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Firstly I would scrape the idea of a solar cell, it's going to generate very very little power especially since its going to be pointed down. Also that 175mA is probably going to be something smaller in the real world even under ideal condition it'll be almost impossible to generate that. Now for the batteries you would like to put into your phone, you have to open up your phone or find dimensions and see how everything fits together. Sometimes their will be some space around the battery and this is put for several safety reasons, so I do not recommend filling up the space if you go ahead with this replacement. This could lead to battery overheating which could cause it to leak and cause a short and destroy your phone. At the end of the day I really wouldn't recommend anything attempt this unless you really know what you're doing and the risks involved with doing this. I don't feel the increase in battery life would offset the risk factor of attempting this. Also I should mention that when you solder that it's going to be very fine and sensitive solder work, there are many things on that board that will be heat sensitive and power sensitive so using something like a $50 Weller wouldn't be sufficient.