Develop Bugs

[Q] Bluetooth heart rate belt - which one choose ???

I'm a runner and I will get your opinion to know which one between ZEPHYR Heart Rate Monitor and polar wearlink bluetooth give you the most satisfaction to use with endomondo or runkeeper or other app personal trainer ? !
thank for your answers !

Yannn did you ever get one ??
im using a ZTE blade with endomondo and would be keep to see if the BHRM works with android and what handset you have ??
ive got iphone 3gs as well
cheers
Russ

i cant belive i never saw this type of product before! very awesome!

wahoo blue hr and sgs3 with bluetooth 4.0

Hi!
I'm under Omega 9.1 - XXBLG1 and I have a "wahoo fitness blue hr" (it's a heart rate belt) and it works perfectly with a iPhone 4S. Happy to know?
The thing is that this wahoo should work on android too with apps such as Runtastic or Endomondo. Of course, I'm here 'cause it doesn't.
After a scann, the phone finds my headset, but not my wahoo...
Anybody successfully connected any bluetooth 4.0 item with sgs3? Any idea why it doesn't work with mine?
NB : I heard about some "secret codes" to put in the dialler like *#232331# , but it didn't work as well.
Thank you for any clue!

dspot.sd said:
Hi!
The thing is that this wahoo should work on android too with apps such as Runtastic or Endomondo.
Click to expand...
Click to collapse
Where did you get this information? AFAIK the Wahoo-Belts only work with iphones.
You can check the compatibility at: http://www.wahoofitness.com/Products/Wahoo-Fitness-Wahoo-Blue-HR-Heart-Rate-Strap-for-iPhone-4S.asp
Greets,
Georg

Where did you get this information?
Click to expand...
Click to collapse
Hi and thanks for the reply.
In the blog of that site (sorry, I'm not yet able to make a proper link but if you write
Code:
Q & A: Wahoo Fitness Blue HR Bluetooth Smart Heart Rate Strap for iPhone 4S
in google, it should be the second link ) it's written on 1/21/2012 :
Will it work with my iPhone 4?
Nope. The Wahoo Blue HR ONLY works with the iPhone 4S right now, but in the future it will work with other “Bluetooth Smart Ready” devices. Rumor is that the next several generations of iPhones and Android devices will all have Bluetooth Smart wireless technology integrated. This product will NOT work with the iPhone 3, 3GS, or 4.
Click to expand...
Click to collapse
So you're right, I reed nowhere that it works on the SGS3, but it should 'cause the technology Bluetooth Smart Ready is a standard... no? (maybe I'm wrong)

dspot.sd said:
Hi and thanks for the reply.
In the blog of that site (sorry, I'm not yet able to make a proper link but if you write
Code:
Q & A: Wahoo Fitness Blue HR Bluetooth Smart Heart Rate Strap for iPhone 4S
in google, it should be the second link ) it's written on 1/21/2012 :
So you're right, I reed nowhere that it works on the SGS3, but it should 'cause the technology Bluetooth Smart Ready is a standard... no? (maybe I'm wrong)
Click to expand...
Click to collapse
I was looking into wahoo products myself, specifically their Cadence Sensor. I have emailed them regarding compatibility with Android phones with BT 4.0, waiting for their reply.
If you're looking for a heart rate monitor to use with the GS3, this one made by Polar works great
http://www.polar.fi/en/products/accessories/Polar_WearLink_transmitter_with_Bluetooth
There are two BT HR Monitors made by Polar, make sure you get the NON H7 Model. The H7 model only works with iPhones
---------- Post added at 09:15 AM ---------- Previous post was at 09:13 AM ----------
And right after I posted my last comment, I received this email from Wahoo
"Hi,
I'm sorry we do not offer Android support as of yet. Android has not yet opened up their API to allow for access to the Bluetooth 4.0 sensor in the phone. Once they do we will begin working on it and allowing our app partners to do the same.
Thanks!
Sean
Wahoo Fitness
--
Wahoo Fitness
www.wahoofitness.com"
So according to them, it's Google not releasing their API for Bluetooth 4.0?

@kman79 : Thank you a lot for the research you did and for your sharing. Because I already have that sensor, I didn't even check if concurrence had something else.
By the way, even if they clam that they do not have the API for bluetooth ( what is not true, 'cause a search in Google with "android bluetooth api" gives you the command... now maybe it is some different for bluetooth 4.0... ), the sgs3 should at least detect the device even if the apps cannot use it (like a PC). But the sgs3 doesn't see the device... and if Wahoo would have the API for bluetooth 4.0, I really don't know how they will manage to make sgs3 recognize the device. I'm really septic for the future of this topic.
Thanks a lot for the search about alternatives for my Wahoo, I will probably check if.

to the best of my knowledge wahoo is NOT BT4 they are ANT+ which is a variation (proprietary variation) of BT4 IIRC
so no the SG3 won't see it.

dspot.sd said:
@kman79 : Thank you a lot for the research you did and for your sharing. Because I already have that sensor, I didn't even check if concurrence had something else.
By the way, even if they clam that they do not have the API for bluetooth ( what is not true, 'cause a search in Google with "android bluetooth api" gives you the command... now maybe it is some different for bluetooth 4.0... ), the sgs3 should at least detect the device even if the apps cannot use it (like a PC). But the sgs3 doesn't see the device... and if Wahoo would have the API for bluetooth 4.0, I really don't know how they will manage to make sgs3 recognize the device. I'm really septic for the future of this topic.
Thanks a lot for the search about alternatives for my Wahoo, I will probably check if.
Click to expand...
Click to collapse
What makes me angry is that i downloaded the app Bluetooth Smart Scanner and it shows my Polar H7 on the list but other apps can't see it. GRR!

nerys71 said:
to the best of my knowledge wahoo is NOT BT4 they are ANT+ which is a variation (proprietary variation) of BT4 IIRC
so no the SG3 won't see it.
Click to expand...
Click to collapse
this in incorrect. there are both ant+ wahoo sensors, and the new blue SC sensors which are bluetooth 4.0 smart devices. from all my reading, there is not yet any applications that can read the data due to supposedly google not releasing the bluetooth 4.0 api; this really doesn't seem to make much sense, but ok. there is a new app out for android that appears to recognize bluetooth 4.0 devices, no one has yet to report if it works for more than just pairing and will provide sensor data to apps.
https://play.google.com/store/apps/details?id=com.nordic.nordicbleapp#?t=W10
start this to show importance to google; does look like support is planned, just not here yet.
http://code.google.com/p/android/issues/detail?id=33371

Check out this bt4 heart rate monitor site
http://beetsblu.com/apps/google-play/
Edit, same app as posted above

the reason the wahoo blue doesn't work is because the android version isn't coded to accept bluetooth 4.0 devices since they consider that only 2 android devices out there can do bt4.0 so they are too lazy to implement it.
i ended up getting the Zephyr HxM to pair with Endomondo for my workouts and such.

I'm looking for a speed and cadence sensor. No good solution until Bluetooth 4.0 ble support is added.
from my E3D

mputtr said:
the reason the wahoo blue doesn't work is because the android version isn't coded to accept bluetooth 4.0 devices since they consider that only 2 android devices out there can do bt4.0 so they are too lazy to implement it.
i ended up getting the Zephyr HxM to pair with Endomondo for my workouts and such.
Click to expand...
Click to collapse
Since I Sold my iphone 5 .I keept my wahoo HR .
Today I bought my galaxy s4.
The wahoo does not connect with.

I inquired about this a while back.This is what they told me:
10/2/12
to support
Do you plan on making Wahoo Bluetooth 4.0 devices available for Android? There are a number of BT4.0 Android phones on the market now (including the best selling phone right now, the Galaxy S III) and many more to come in the near future. It seems like it would make good business sense to stop ignoring such a large customer base and BT seems like a great opportunity.
Wahoo Fitness <[email protected]>
10/3/12
to me
Hi ,
due to the Android operating system's lack of BTLE developer support we are being forced to use individual phone manufacturers APIs to allow our products to work with the phones. Currently we are working on a Galaxy S3 implementation for our Blue HR and Blue SC and should have a solution by the end of the year.
Sean
Wahoo Fitness
Click to expand...
Click to collapse
They obviously missed the end of the year mark.... Though, I think Google just announced that Android 4.3 would have native support for BTLE.
I personally opted for the Suunto Move Stick Mini (ANT+ USB stick) connected with an OTG cable. It works pretty well, the only problem is the micro usb connection being so small that its not very stable. You need to find a way to keep the cable firmly plugged in. I use the app IpBike (which also works for running). Somewhere on these forums I also posted how to hack Endomondo to support ANT USB sticks.

mputtr said:
the reason the wahoo blue doesn't work is because the android version isn't coded to accept bluetooth 4.0 devices since they consider that only 2 android devices out there can do bt4.0 so they are too lazy to implement it.
i ended up getting the Zephyr HxM to pair with Endomondo for my workouts and such.
Click to expand...
Click to collapse
well, the 4.3 android update seemed to change things. Wahoo just paired (at least once, it is not perfect) with BLE heart rate monitor app.
This thread was one of the top search results for "Nexus 4 bluetooth smart wahoo". Cant say I recomend Wahoo on android, i am having problems. But i saw it work at least twice so far.

thenightisdark said:
well, the 4.3 android update seemed to change things. Wahoo just paired (at least once, it is not perfect) with BLE heart rate monitor app.
This thread was one of the top search results for "Nexus 4 bluetooth smart wahoo". Cant say I recomend Wahoo on android, i am having problems. But i saw it work at least twice so far.
Click to expand...
Click to collapse
yes, it changes things.. i knew 4.3 is supposed to support btle out of the box.
and it is kinda weird that a nexus 4 search brings you to a s3 thread. XD
Sent from my GT-I9300 using xda app-developers app

[Q] Bluetooth 4.0 on Galaxy Note II

Anyone tried to connect via bluetooth v4.0 to any accessory?
I am trying to connect to a Polar H7 Bluetooth Low Power Heart Rate Monitor with a Samsung S3 with no luck.
Just curious if with a Note II it works?
Thanks

No problems here. But my accessories have been audio. You should check with the cuff vendors to see which profiles/services it needs. If they're pretty standard and in the gn2 stack, they may be able to guide you more.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html

But your accessories are also Bluetooth V4.0 Low Energy?

Not necessarily. I use headphones and car stereos.
Each bluetooth version has a specific set of services it adds on from the prior version. When a product uses bluetooth it may choose to use all or only some of the services. What you want to find out is what services your monitor uses. For instance, it may not need A2DP, which are audio services, or HSP handsets.
http://en.m.wikipedia.org/wiki/Bluetooth_profile
That link happens to mention low energy requirements.
Once you know the profiles it uses, you can check what the gn2 supports.
I don't know enough about your monitor to be able to help you more. I would suspect the manufacturer of your monitor could help more.
I don't know where you live, but you could try taking it in to the store and attempt to connect it. Ask the salesperson for help.
http://m.samsung.com/uk/consumer/mobile-devices/galaxy-note/galaxy-note/GT-N7100RWDBTU
That does show it supports LE, which I assume is low energy.
-----
I would love to help you, but help yourself first: ask a better question
http://www.catb.org/~esr/faqs/smart-questions.html

fae said:
Anyone tried to connect via bluetooth v4.0 to any accessory?
I am trying to connect to a Polar H7 Bluetooth Low Power Heart Rate Monitor with a Samsung S3 with no luck.
Just curious if with a Note II it works?
Thanks
Click to expand...
Click to collapse
Bit late answer but..
The HR7 is a BLE device and the Note II is a BLE capable device.
However since Google failed to put a proper Bluetooth stack for BLE in it it won't work.
There are some apps in the market that use some kind of samsung library to show that you can actually see the device .
But these work very spotty, i know since i have both the hr7 and the noteii.
And although i can get it to appear in connections dialog windows i have only been able to use it once.
Search the forums for SGIII and BLE you'll find more info.

The bluetooth stack problem is there. Google has not kept the same stack for all versions and also incomplete. AFAIK I think they have changed to broadcom BT stack for 4.1/4.2 and its still incomplete. So maybe at a later version compatibility with all devices will be there.
as of now you could pair unpair a few times. Maybe that might work.

Yes, as far as I know there is not yet any firmware version with a workable ble stack. Keep waiting... meanwhile my Polar H7 heart rate band may become obsolete with the waiting shame on samsung.

connected all my bt devices without any problem..check the settings of ur bt device..

I can also connected all my bt devices without any problem, except those that are Bluetooth version 4.0... like my Polar H7 chest band.

fae said:
I can also connected all my bt devices without any problem, except those that are Bluetooth version 4.0... like my Polar H7 chest band.
Click to expand...
Click to collapse
one more here... the same thing...

Bose dock 10 or something like that
Sent from my GT-N7100 using xda app-developers app

I have this problem too. I didn't realise I would even need to look into if it would be compatible. I thought the whole point of Bluetooth was it was standard!
So, is this something we can expect to work in the future, or should I just send it back to Amazon?
Can anyone recommend a Heart Rate monitor that will work?

AndyCr15 said:
Can anyone recommend a Heart Rate monitor that will work?
Click to expand...
Click to collapse
Zephyr HxM.
Regards,
Dave
Sent from my GT-N7100 using Tapatalk 2

Thanks, that's what I'm looking for. Generally seem to be around £80

The same for me...
But you can also buy the other polar bluetooth hr monitor (the non smart (stupid?) one)
Same price but poor battery life...
Envoyé depuis mon GT-N7100 avec Tapatalk

Do you know what the model name of the 'stupid' one that works is?

AW: [Q] Bluetooth 4.0 on Galaxy Note II
AndyCr15 said:
Do you know what the model name of the 'stupid' one that works is?
Click to expand...
Click to collapse
Polar WearLink+ BT
Sent from my GT-N7100 using xda app-developers app

I couldn't get the Polar H7 Smart heart rate monitor working on the Note 2 with any of the sports apps in the Play Store. Bluetooth low energy (also called Smart) does not appear to be supported on the Note 2. I've decided to order the Zephyr HxM and will be giving that a try on Saturday as an alternative approach. It uses standard Bluetooth and should work. I'm keeping the Polar H7 hoping that later in the year when Android 5 is released we will get working Bluetooth Low Energy (Smart) support. The Samsung site is very misleading and states Bluetooth 4.0 LE support as a feature on the phone. It does not work. There is an app in the Play Store called Smart Scanner that can use the HW in the Note 2 to see the Polar H7 ... it just can not do anything more with it. So the HW is functional; it just lacks Android OS support.
If anyone figures out how to get BLE (ie. Bluetooth Low Energy or Smart) devices working on the Note 2, please post your solution.

UCSB said:
I couldn't get the Polar H7 Smart heart rate monitor working on the Note 2 with any of the sports apps in the Play Store. Bluetooth low energy (also called Smart) does not appear to be supported on the Note 2. I've decided to order the Zephyr HxM and will be giving that a try on Saturday as an alternative approach. It uses standard Bluetooth and should work. I'm keeping the Polar H7 hoping that later in the year when Android 5 is released we will get working Bluetooth Low Energy (Smart) support. The Samsung site is very misleading and states Bluetooth 4.0 LE support as a feature on the phone. It does not work. There is an app in the Play Store called Smart Scanner that can use the HW in the Note 2 to see the Polar H7 ... it just can not do anything more with it. So the HW is functional; it just lacks Android OS support.
If anyone figures out how to get BLE (ie. Bluetooth Low Energy or Smart) devices working on the Note 2, please post your solution.
Click to expand...
Click to collapse
Nice summary! :good:
I came to the same conclusion!

Thanks ... I should have also mentioned that when the Samsung Galaxy S 4 was recently announced it seemed to have support for some sports / health apps and gadgets. I was wondering if they were Bluetooth 4.0 LE based. If so, that would lead me to believe that Samsung must have a working Bluetooth 4.0 LE (Smart) patch for the version of Android the phone is going to launch with ... this might mean that there may be some hope for a fix for the Note 2. I'm just speculating here ... but, hoping that Samsung will fix this problem.

Is Actiontec ScreenBeam Pro's miracast feature compatible with 2014 Galaxy Note 10.1?

So I noticed the older Galaxy Note 10.1 is listed as compatible with the Altec ScreenBeam Pro... I'm wondering if it also works with the newer 2014 edition. Has anybody tried? It seems to work quite well with the Nvidia Shield (Nvidia actually recommends it out of many miracast devices that they've tried. They've even worked with altec to optimize it for the Shield, so I imagine that would also benefit other compatible Android devices): http://www.actiontec.com/products/63.php

orlandojumpoff said:
So I noticed the older Galaxy Note 10.1 is listed as compatible with the Altec ScreenBeam Pro... I'm wondering if it also works with the newer 2014 edition. Has anybody tried? It seems to work quite well with the Nvidia Shield (Nvidia actually recommends it out of many miracast devices that they've tried. They've even worked with altec to optimize it for the Shield, so I imagine that would also benefit other compatible Android devices): http://www.actiontec.com/products/63.php
Click to expand...
Click to collapse
it works, have the shield recommended firmware installed on the screenbeam as well. tried drawing and watching google movies with it. no problems.

I have the Rocketfish MiraCast receiver and it works with the Note 2014.

johnnobts said:
it works, have the shield recommended firmware installed on the screenbeam as well. tried drawing and watching google movies with it. no problems.
Click to expand...
Click to collapse
nrage23 said:
I have the Rocketfish MiraCast receiver and it works with the Note 2014.
Click to expand...
Click to collapse
Awesome, thanks for the feedback... was beginning to think this was going to go unanswered. Guess it may be time to look into getting a miracast adapter! Thanks again.

orlandojumpoff said:
Awesome, thanks for the feedback... was beginning to think this was going to go unanswered. Guess it may be time to look into getting a miracast adapter! Thanks again.
Click to expand...
Click to collapse
I am also rooted and MiraCast still works. It is a bit more slugish than my Nexus 7.2. Probably because of scaling down since the Nexus is the resolution as the TV. My Nexus 10 was a bit slower as well.

orlandojumpoff said:
Awesome, thanks for the feedback... was beginning to think this was going to go unanswered. Guess it may be time to look into getting a miracast adapter! Thanks again.
Click to expand...
Click to collapse
I have the PTV3000 dongle and the note seems to disconnect immediately after connecting to the dongle with this message "unable to start screen mirroring because of a hardware issue".
quick lookups on google seems to indicate it's related to the status being unofficial. I am wondering if you had any similar problems and if I'd appreciate if you can share your workaround if you have any.
Thanks

surfdev said:
I have the PTV3000 dongle and the note seems to disconnect immediately after connecting to the dongle with this message "unable to start screen mirroring because of a hardware issue".
quick lookups on google seems to indicate it's related to the status being unofficial. I am wondering if you had any similar problems and if I'd appreciate if you can share your workaround if you have any.
Thanks
Click to expand...
Click to collapse
Try resetting the ptv3000 and updating the firmware.I got to work after a few mins.
http://downloadcenter.netgear.com/en/product/PTV3000
As for the OP question, actiontec has a 4th gen miracast adapter that works
http://shop.actiontec.com/screenbeampro.html

miracast
Does using one of these require a Smart TV? thanks

Doukeyakusha said:
Does using one of these require a Smart TV? thanks
Click to expand...
Click to collapse
Nope, you just need to plug the adapter into an available HDMI port on your tv

oh cool, thank you. Was just a bit confused on that.

I've had some luck with the ptv3000 on the 2.4.26 update. YouTube videos and games almost work, but my connection just seems barely too slow to be usable. Pictures and anything else seem to work okay for me. Would the screen beam pro work any better for gaming since I'd seems to be endorsed by nvidia?

Are You using the built in screescreen Mirror app
Are you using the screen mirror in the settings or a third party app

I'm using the one in settings. Would any third party app be better?

Smartwatch Huawei/Honor navigation and route tracking

Hello,
I would like to purchase a Huawei or Honor (LiteOS) smartwatch in the near future.
However the most important point for me is that the watch has a route tracking feature. That is to say a feature or application directly on the smartwatch that allows me to follow a route from a starting point to a destination point (predefined itinerary or even a mapping application like google map).
Attention I'm not talking about gpx export! Moreover, is there a way (maybe via the smartphone) to import a gpx track on your watch?
Not having found this information I would like to have confirmation that such a feature exists on the latest Huawei or Honor smartwatches.
Thank you in advance for your answer!

For that task you need an Android watch like the Huawei Watch 2.
LiteOS doesn't have that feature, at least for now.

lvt2010 said:
For that task you need an Android watch like the Huawei Watch 2.
LiteOS doesn't have that feature, at least for now.
Click to expand...
Click to collapse
So on a smartwatch under LiteOs it is not possible to program a route (via the smartphone for example) and follow this route directly on the smartwatch?

Zinoviyky said:
So on a smartwatch under LiteOs it is not possible to program a route (via the smartphone for example) and follow this route directly on the smartwatch?
Click to expand...
Click to collapse
No, it's a health app, not a map or navigation app. There is no map on the watch either, you only can review your map on your phone.

lvt2010 said:
No, it's a health app, not a map or navigation app. There is no map on the watch either, you only can review your map on your phone.
Click to expand...
Click to collapse
Okay, thank you for this answer.
I am looking for a watch that meets these 2 criteria:
A watch design that is outdoor enough (like the Amazfit T-Rex or the Honor watch gs pro).
A watch that allows GPS navigation. That is to say being able to program a route (via the phone perhaps) and be able to follow this route, as well as these steps, directly on the watch (not necessarily to have a precise monitoring with a map but already just the steps of the route (in 100 on the right) it would be already good)
I am interested in the Honor watch gs pro but you have just confirmed that it is not possible to follow an itinerary.
Would you have watches to offer me that meet these 2 criteria?
Thank you in advance

Zinoviyky said:
Okay, thank you for this answer.
I am looking for a watch that meets these 2 criteria:
A watch design that is outdoor enough (like the Amazfit T-Rex or the Honor watch gs pro).
A watch that allows GPS navigation. That is to say being able to program a route (via the phone perhaps) and be able to follow this route, as well as these steps, directly on the watch (not necessarily to have a precise monitoring with a map but already just the steps of the route (in 100 on the right) it would be already good)
I am interested in the Honor watch gs pro but you have just confirmed that it is not possible to follow an itinerary.
Would you have watches to offer me that meet these 2 criteria?
Thank you in advance
Click to expand...
Click to collapse
I believe the Garmin Fenix 6 is what you need, it's more expensive than most of other outdoor watches but it suits your needs.
Alternatively, the latest Ticwatch Pro 3 could do the job using Google Maps as well. It costs half the Garmin's price.

lvt2010 said:
I believe the Garmin Fenix 6 is what you need, it's more expensive than most of other outdoor watches but it suits your needs.
Alternatively, the latest Ticwatch Pro 3 could do the job using Google Maps as well. It costs half the Garmin's price.
Click to expand...
Click to collapse
The Garmin Fenix 6 is very nice but too expensive for my use... I've watched some tests on the Ticwatch Pro 3 but it looks a bit cheap.
Any other smartwatch that might be about right?

lvt2010 said:
I believe the Garmin Fenix 6 is what you need, it's more expensive than most of other outdoor watches but it suits your needs.
Alternatively, the latest Ticwatch Pro 3 could do the job using Google Maps as well. It costs half the Garmin's price.
Click to expand...
Click to collapse
Sorry in my previous message I was talking about the Ticwatch Pro 2020, I didn't know the Ticwatch Pro 3. It looks great! Do you have any feedback on this watch?

Zinoviyky said:
Sorry in my previous message I was talking about the Ticwatch Pro 2020, I didn't know the Ticwatch Pro 3. It looks great! Do you have any feedback on this watch?
Click to expand...
Click to collapse
I don't have the watch myself, but I've watched a dozen youtube videos about it, it seems that it's the best smartwatch that money can buy today.

lvt2010 said:
I don't have the watch myself, but I've watched a dozen youtube videos about it, it seems that it's the best smartwatch that money can buy today.
Click to expand...
Click to collapse
And you confirm that it is possible to follow a route directly on the smartwatch?

Zinoviyky said:
And you confirm that it is possible to follow a route directly on the smartwatch?
Click to expand...
Click to collapse
Yes you can use your watch for navigation just like with your phone using Google Maps app.
Be aware that battery won't last long in navigation mode on watches running Wear OS. So you should always have your phone and a backup battery pack.

lvt2010 said:
Yes you can use your watch for navigation just like with your phone using Google Maps app.
Be aware that battery won't last long in navigation mode on watches running Wear OS. So you should always have your phone and a backup battery pack.
Click to expand...
Click to collapse
The navigation mode will be for hikes of 8 to 10 hours, do you think the autonomy will still hold that time?

Zinoviyky said:
The navigation mode will be for hikes of 8 to 10 hours, do you think the autonomy will still hold that time?
Click to expand...
Click to collapse
Maybe, if you charge the watch to full before you go. Anyways, you should have a battery pack just in case.