Battery drain

[Mirodin]

Hello,

for the last couple of weeks my BangleJS 2 drains its battery within one day and I do not know why.
I had this behaviour before (did not install/change anything) around December last year but it went away after two weeks without me doing anything.
What is new this time is that there is always the bell widget shown and there is an alarm set for 12:00 every day. When I click on "Delete All" in alarm settings it says "Nothing to delete".

Firmware: 2v27
DFU: 2v25

Installed Apps:

• About v0.15
• Lock Widget v0.08
• Notifications v0.14
• Thermometer v0.07
• HRR v0.09
• HRM Widget+ v0.01
• Acceleration Data Provider v0.01
• HRM Sport mode v0.01
• Yet Another Battery Widget v0.01
• Reply Library v0.03
• Widget Editor v0.05
• Bluetooth Widget v0.01
• Power Manager v0.11
• Message Widget v0.07
• Timer Clock v0.07
• Launcher v0.25
• messages v0.67
• Scheduler v0.33
• Android Integration v0.44
• Alarms & Timers v0.52
• message Icons v0.09
• Bootloader v0.66
• Sleep Log v0.20
• Message UI v0.88
• Settings v0.79
• Health Tracking v0.35
• Alarms Widget v0.02

Tried the Power Manager as seen here: https://github.com/orgs/espruino/discussions/5977
But I could not find the code for the first deferred function in the repository.

I tried a factory reset and restoring a backup but that results in the alarm returning and battery to drain again.

I did not reset and setup watch again as that will be a lengthy process and I want to keep my HRM and other trackings on the clock - last resort though.

Thank you for any help/advice on how to debug this!

[RKBoss6]

Hey! Try creating a backup of your watch from the app loader settings page. Then what you can do is a complete factory reset, just to see if it's a problem with an app you installed, or a hardware issue. If that has the same result, you can restore the watch from the backup, with all apps and settings intact. This way, you can see if it's a software, or hardware issue. You may have to change the settings to avoid full backlight brightness, or for a minute of unlock time, but apart from that, the default settings should last for more than a day...

[RKBoss6]

As for the alarm bug, try uninstalling and reinstalling scheduler and alarms to see if that works. I think the DFU is one version behind (current is 2v26), but that really shouldn't matter...
Just in case, I'll ping @gfwilliams to see if he knows anything about that

[gfwilliams]

The DFU version is fine, that won't affect battery usage.

I tried a factory reset and restoring a backup but that results in the alarm returning and battery to drain again.

Did the battery run flat after you did the factory reset but before you did the backup?

Please can you uninstall "Acceleration Data Provider"? I'm pretty sure that won't be helping at all as it's going to be processing acceleration data ~12 times a second.

Please can you either email your watch backup to [email protected], or open the watch backup file and post up just alarm.settings.json? That might help to figure out the alarm issue - whether that causes the battery drain I don't know.

In the power manager, please can you copy this line and paste it in here?

I can't figure out what that code is, but given more of the line's contents I should be able to - even so I don't think that's likely to run the battery down too much - even if the CPU was running 100% the battery should still last for more than a day.

[Mirodin]

Try creating a backup of your watch from the app loader settings page. Then what you can do is a complete factory reset, just to see if it's a problem with an app you installed, or a hardware issue.

I did that already and the problem went away so it must be a issue with one of the apps installed. That is why I posted the pictures of the Power Manager which only had that one suspicious line in it.

Did the battery run flat after you did the factory reset but before you did the backup?

No, the problem went away as soon as I did the factory reset.

Please can you either email your watch backup to [email protected], or open the watch backup file and post up just alarm.settings.json? That might help to figure out the alarm issue - whether that causes the battery drain I don't know.

Will do :)

[gfwilliams]

Ok, looking at this, the alarm icon is because you've got Timer Clock installed and an alarm is set up inside that clock. For some reason Timer Clock doesn't use the Bangle.js-supplied way of doing alarms but just implements its own, which is why checking the Alarms app didn't help.

The timeout= in power manager from Timer Clock too - if there's an alarm it starts updating the clock screen once a second, which will really hit your battery.

So I'd say:

• Uninstall Timer Clock - reinstall Anton clock which looks the same, but use the alarms in the Alarm app if you need them
• Uninstall Acceleration Data Provider which is also a high user of power all the time

And that might fix it?

[Mirodin]

Thank you so much for checking this out. It must indeed have been the Timer Clock as battery life returned back to normal. I will miss the easy access to countdown timers for cooking though ;)

[RKBoss6]

Glad it's fixed now! The great thing about bangle is for an easy access timer, creating one yourself is always an option! =)

[thyttan]

... or if you're up to it, refactor Timer Clock to use the standard way of doing timers via the scheduling library! :)

[gfwilliams]

I should add that I use a clock face with 'clockinfos' for timers - more info at https://www.youtube.com/watch?v=luD9Dgx5eBo

The benefit is you get a big choice of clock faces you can use, and there's loads of different stuff the clockinfos can display.