JingPad C1 battery issues

el_pinguino · 17 Aug 2022, 15:07

My JingPad seems to continue operating at some level after the shutdown. Example: Battery is charged to 90% and I shut the table down and put it away for the night. In the morning I touch the table, which is a bit warm to the touch and only charged to 10%.

I have tried several combinations of charging and shut down, and most of the time the battery loses its charge. Maybe 75% of the time.

Has anyone else had issues with the JingPad holding a charge? Could some process be running in the background? I rarely use this tablet. I would guess I have used it for about 200 hours since I received it in February 2022.

MrT10001 · 17 Aug 2022, 17:03

I have a lot of devices that will discharge the battery quickly, even when powered down. My main use ones, don't get powered down, I just charge them up when they warn me or get low. I have six UT devices on the go at the moment which I don't switch off.

Keneda · 17 Aug 2022, 21:38

@mrt10001
Well, loosing 80% battery charge in one night when powered off doesn't seem good ou normal to me.

I can leave my N5 powered off for month without loosing such an amount of charge.

cliffcoggin · 17 Aug 2022, 23:16

If software is not running there is the possibility of a hardware fault in the phone such as a short circuit across the terminals of the battery. A broken wire or condensation come to mind. There is even the remote possibility of an internal fault in the battery. Can you remove the battery for testing?

mark1250 · 17 Aug 2022, 23:28

Maybe there is a bug preventing the OS from powering off the device.

Can you boot to recovery or bootloader and power off from there? That would help determine if it's a hardware or software issue.

el_pinguino · 18 Aug 2022, 01:38

Thanks for the replies. I am leaning towards a software problem. Or it could very well just be the JingPad computer Godz. hahahaha

No, I cannot take the batter out for testing.

I will try using the suggestion of shutting down from recovery after I complete all other possible combinations. This takes time.

Last night I shut the tablet down using the power switch. The battery was at 51% and this morning I turned it on and the battery was 51%. But tomorrow.... who knows?

Thanks for the suggestions.

el_pinguino · 19 Aug 2022, 12:46

Update:

3 times I noted the battery charge in % and then I shut the tablet down by software in the drop-down menu in the task bar. After 2 hours I boot the tablet and there is no noticeable loss in battery %.

3 times I did the same thing except I shut down by using the power switch. No noticeable loss in battery %.

All 6 times the time from pressing the power on button was 3 seconds until I felt the buzz of booting up.

After I shut down the last time I waited 30 minutes and plugged in the factory charger and charged the tablet from 50% to 60% and then I unplugged the charger. The next morning the battery was dead.

I plugged in the charger and waited a minute and pushed the power on button and it took 10 seconds to feel the buzz.

I have a few more combinations to experiment with but this does take a bit of time.

arubislander · 19 Aug 2022, 14:53

@el_pinguino so what it looks like is that when you plug in the charger the device powers in to some state where it can't properly go to sleep in.

el_pinguino · 20 Aug 2022, 13:05

Last update:

Scenerio 1:
When charging the JingPad during use (i.e. OS is running) and I disconnect the charging cable before shutdown there will be no problem.

If I then reconnect the charging cable to the JingPad it will show the green charging animation.

If I then disconnect the charging cable something will keep running and discharge the battery.

If I reconnect the charger ( after disconnecting it once) nothing will happen visably. No charging animation.

Scenario 2:
If I connect the charging cable to the JingPad when not in use the JingPad will show the green charging animation.

If I then disconnect the charging cable something will keep running and discharge the battery.

If I reconnect the charger ( after disconnecting it once) nothing will happen visably. No charging animation.

Generally, the time from pressing the power on button to the buzz signaling the bootup, is 3 seconds. If The JingPad is in this unknown discharging state the time to the buzz is 9 seconds.

So, charging my JingPad when the OS is not running leads to problems. I guess I'll just have to charge the JingPad during use and remember to disconnect the charger before shutting down.

Thanks for all of the suggestions.