From Unofficial Zero Manual
- Meanwell Charger Behavior
These chargers do not interact over CANBus messaging, so just operate in a preset way in CC-CV mode, although the CCU also has some control over it to implement battery protections.
- Clicking Sound
- There is a known issue, per Clicking sound when plugged-in, that the Meanwells sometimes make a repeated clicking sound.
- It seems to happen generally in the cold.
- This symptom does not seem to precede an equipment failure, and should go away once charging is complete.