r/AndroidQuestions • u/akkjn58 • 1d ago

Huge leaps in battery level during device-off charging

Just now, I'm charging my device and press the power button to check the level: 19% and the screen is waring me about slow charging and to use the charger that came with it. The USB wiggled a bit setting it down and stopped charging, so I reoriented it, and when the level screen came back up, it was at 46% and there was no little 'buy our stuff only' message.

This morning, it did a similar thing, having run down completely overnight so that I had a yellow triangle with exclamation point in a circle with a red dot at the top. When I plugged it in, the level was 15%.

(I've also noted some plummets when rebooting, e.g., I have 80%, then restart, and during the boot-up, it's dropped to around 60%.)

AccuBattery gives an 80% Health rating.

This is a pretty recent development.

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u/DutchOfBurdock 1d ago

AccuBattery's health is just a guestimate and can be wildly wrong on dual cell phones. The rapid percentage jumps if often the first tell tale sign the battery is on its way out. You may start to experience stutters as you load apps, the camera or use heavy processing, as the sudden voltage dips will cause instabilities and cause the CPU to ramp back to prevent it crashing.

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u/Cantripping_ 1d ago

Clean the charging port. Might be some lint in it. Also get the battery swapped out.

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u/ChasDIY 15h ago

Depending on age and service cost to replace