@pat-mcgowan: "The battery then decides that charging is over and automatically switches off."
This model of battery pack tries to figure out when the plugged-in device has got to 100% charge, and when it detects that situation it switches itself off and stops supplying power. It then won't supply any more current until I switch it back on by pressing a button on the front. Presumably the idea is to save power by switching off both the battery pack's and the device's charging circuits. In this case I have a phone at 60% charge and I want to top it up. I plug it into the battery and it starts drawing current. Then I go to sleep. After a couple of hours the phone is at 100% and it stops drawing current from the USB battery. The battery detects this drop in current and switches itself off. But the phone's screen stays on. After a while it would like to top itself up again, but the battery is switched off and won't supply current until I press the button. So the phone just keeps draining itself until I wake up, by which time it's back to 60%. This is a fairly normal USB power bank, brand name Anker (but likely a fake). I'm pretty sure I've seen this behaviour in other battery packs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1512211 Title: Charging from USB battery, phone stops charging, switches on screen, and discharges To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1512211/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
