Murena FP5 won't slow charge (but will fast!)
- /e/ version: 1.18-t-20231207360613-stable-FP5 (has not worked on all prior versions also)
- Device model(s): Fairphone 5 (Murena)
- Developer mode enabled: yes
- Device rooted: no
- Trackers blocker enabled: yes
Summary
Charging with the FairPhone power adaptor works fine, as does with a Qualcomm Quickcharge car adaptor. However when "slow charging" using a USB outlet (on a home power plug, computer, cheap car charger) the phone does not charge.
This is using an official Fairphone USB-C cable, so the cable is not at fault, nor is the computer since many have been tried by this point.
The charging icon appears and the lock screen says "charging slowly" however the battery charge slowly falls, even whilst the phone is idle/screen off.
The problem
Steps to reproduce
- Drain battery to less then 100%
- Attach phone to a STANDARD USB outlet that does NOT support quick charge using a quality cable
- Observe the phone thinking its now charging (icon, etc)
- Wait ~30 mins or so
- Observe battery level is actually falling
What is the current behavior?
The phone does not charge at all on a standard USB connection
What is the expected correct behavior?
The phone to charge (very?) slowly on a standard USB connection
Technical informations
n/a
Relevant screenshots n/a
Solutions
Workaround
Use a Qualcomm quick charge compatible charger only.
Possible fixes
Sadly not, I assume its firmware/kernel and may even persist on a standard non-Murena (/e/) Fairphone for all I know.