"Battery empty" in the cold (< 5°C)
asked 2016-12-03 02:00:47 +0200
Since it became colder I encountered sudden "battery empty" situations, resulting in a forced reboot, when the phone has been exposed to cold (about < 5°C), but not necessarily freezing, temperatures. This didn't happen last winter. I am able to reproduce the issue by exposing the phone to the cold for 5-10min with a battery level of approx. 70% or lower. This happened with both original Jolla batteries I own. I already tried cleaning the contacts or repeatedly pushing them in, both didn't help.
I assume there's something wrong with the software measuring it: How can it be that although the voltage is still 3.43V the reported energy values is 0.00Wh? For that to be the case, the current has to be 0.00A which obviously can't be the case as the phone was still working at that time and the screen was on.
I suspect a software issue introduced this year as this didn't happen last winter. Any ideas?
(I'm using SFOS 2.0.5.6)
same here - polarcell battery - sudden reboots or shutdowns when the phone is in an outer pocket and the temperature is near zero degrees - changed the battery again to a new one (different supplier) and it worked for four days now - fingers crossed
elastic ( 2016-12-03 11:02:15 +0200 )editWhat you are describing happens to any phone or any battery for that matter. Just keep the phone in an internal pocket close to your body heat. IMO this is chemistry, not software.
gabriel ( 2016-12-03 11:46:23 +0200 )editI can't remember having these problems in the last 2 winters. Furthermore there are many phones that can deal with cold, but not freezing, temperatures. 5°C are not an issue for iPhones, Moto X etc. It's ok if a phone doesn't work at -25°C, but warmer temperatures shouldn't cause these issues.
schmittlauch ( 2016-12-03 23:25:35 +0200 )editthis sounds like a software bug, if the battery otherwise functions well and the change happens quickly but is fully reversible, additionally can you can an alternate or new battery and reoeat the steps above?
DarkTuring ( 2016-12-23 04:13:32 +0200 )editSame here. The phone shows ~4% battery soon after it was at ~43% and it shuts down very soon. This must be due to wrong calculations or wrong logic in phone SW. I don't remember seeing this problem with the previous SW versions. Anyone from Jolla/SFOS team to comment?
onurati ( 2016-12-31 21:36:44 +0200 )edit