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I have a Nexus 6P and its battery is going bad. It just shuts down when it reaches 20-30%. Kind of annoying because I never know quite how much battery life I a

I have a Nexus 6P and its battery is going bad. It just shuts down when it reaches 20-30%. Kind of annoying because I never know quite how much battery life I actually have remaining.

darrylb42 9y ago
Same here, the phone is otherwise fine. I don't really want to go to a Pixel 2XL because I like having a headphone jack.
kilroy123 9y ago
Same here. I have to carry around an extra battery booster. :-/
disconnected 9y ago
I have a similar situation. My Android (1st Gen Moto G, running Lineage OS, about 3 years old) shuts down once the battery level hits 15%. You can actually see it change from 15% to 1% for one brief moment before it shuts down. Sure, the battery is old, but this behavior is unlike the behavior of any other OS/device I've seen. I've seen some laptops with seriously messed up batteries and as far as I can remember, the OS reports a smooth discharge profile without steep drops and without and strange "surprises". I think Android is probably not taking battery health into account when it reports remaining capacity, but that is only a guess.
- kalleboo 9y ago
  My old MacBook Pro battery got so bad that it would jump down and back up 20% randomly.
- k3a 9y ago
  Can't it be a problem with the fuel gauge inacurately measuring the battery capacity? I have seen it only on one "cheap" Android device and I have been using Androids for a long time. Anyway, easily removable batteries are the way to go.
wstrange 9y ago
I replaced the battery on my 6P, and it's like a new phone. It is a bit tricky, but well worth it.
katastic 9y ago
That's really strange. Because most/all modern systems build statistics about your battery as it charges and drains, to predict the life left. Without those statistics they'd have no idea how long it will last because it changes over the life of the battery. In Linux you can even see pretty graphs showing "confidence" for each percentage of battery vs "how confident" Linux is of remaining power. https://www.makeuseof.com/wp-content/uploads/2012/02/power_statistics_laptop_battery_history.jpg https://www.makeuseof.com/wp-content/uploads/2012/02/power_s... My Samsung Android phone shuts down at 5-7% battery life. And the battery dies much faster these days. But it's never "inaccurate." It doesn't jump from 50% to 2% over a course of five minutes. Other than something else being wrong with your OS, my only guess there would be the battery got bad so quickly the OS hasn't adapted to the new life cycle yet by removing enough of the old datapoints.
praneshp 9y ago
Effectively the same, but it just quickly degrades from 60-0 for me (like 20 mins of just reddit/hn). 100-60 is still decent.

I have a Nexus 6P and its battery is going bad. It just shuts down when it reaches 20-30%. Kind of annoying because I never know quite how much battery life I actually have remaining.

darrylb42 9y ago

Same here, the phone is otherwise fine. I don't really want to go to a Pixel 2XL because I like having a headphone jack.

kilroy123 9y ago

Same here. I have to carry around an extra battery booster. :-/

disconnected 9y ago

I have a similar situation. My Android (1st Gen Moto G, running Lineage OS, about 3 years old) shuts down once the battery level hits 15%. You can actually see it change from 15% to 1% for one brief moment before it shuts down. Sure, the battery is old, but this behavior is unlike the behavior of any other OS/device I've seen. I've seen some laptops with seriously messed up batteries and as far as I can remember, the OS reports a smooth discharge profile without steep drops and without and strange "surprises". I think Android is probably not taking battery health into account when it reports remaining capacity, but that is only a guess.

kalleboo 9y ago
My old MacBook Pro battery got so bad that it would jump down and back up 20% randomly.
k3a 9y ago
Can't it be a problem with the fuel gauge inacurately measuring the battery capacity? I have seen it only on one "cheap" Android device and I have been using Androids for a long time. Anyway, easily removable batteries are the way to go.

wstrange 9y ago

I replaced the battery on my 6P, and it's like a new phone. It is a bit tricky, but well worth it.

katastic 9y ago

That's really strange. Because most/all modern systems build statistics about your battery as it charges and drains, to predict the life left. Without those statistics they'd have no idea how long it will last because it changes over the life of the battery. In Linux you can even see pretty graphs showing "confidence" for each percentage of battery vs "how confident" Linux is of remaining power. https://www.makeuseof.com/wp-content/uploads/2012/02/power_statistics_laptop_battery_history.jpg https://www.makeuseof.com/wp-content/uploads/2012/02/power_s... My Samsung Android phone shuts down at 5-7% battery life. And the battery dies much faster these days. But it's never "inaccurate." It doesn't jump from 50% to 2% over a course of five minutes. Other than something else being wrong with your OS, my only guess there would be the battery got bad so quickly the OS hasn't adapted to the new life cycle yet by removing enough of the old datapoints.

praneshp 9y ago

Effectively the same, but it just quickly degrades from 60-0 for me (like 20 mins of just reddit/hn). 100-60 is still decent.