Battery headscratcher

KirstinS

Esteemed Pedelecer
Apr 5, 2011
3,224
899
Brighton
Hoping the battery gurus can shed light on this

I have. 36v 9ah battery and a 11.1v 12ah booster battery

I charged both on Thursday night and cycled 15 miles to and from work. Then I forgot to unplug and remove the battery - though bike switched off at handlebar. I never usually do this

I then went to charge both this evening and the booster battery read 3.75v, 3.75v and 4.2v

Normally they are about 3.80v per series after my commute . It's a well balanced pack usually

It's not my charger playing up either - I tested and my multimeter agreed. Somehow one series has not lost any charge apparently after 15 miles

Can't find any shorts or anything

Very odd ?
 
D

Deleted member 4366

Guest
Maybe it somehow got some charge from your main pack.
 

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