key left 'on' now won't fully charge battery

[ledhed]

hi folks,

i have a magic pie hub motor with a cycle analyst display on the handlebars.

i left the key 'on' and battery is dead, when i charge battery (48v) it charges for a while, then fan shuts off as is suppose to when battery is charged, but it's not charging long enough to fully charge.
i took it for a pedal run with key 'on', display showed briefly, then displayed 'low volts'.

what can i do to keep charger going to charge battery fully? thanks for your help.

rob

 

[dogman dan]

You might have discharged a cell too low, and now the charger will not run for safety. or,, you may have discharged a cell so low it's ruined. You will have to get a voltmeter, and look at each cell or cell groups voltage to find out.

When I did the same thing,, I knew the battery was ruined,,the pouch cells had puffed up unbelievably.

 

[ledhed]

okay, thanks for the advice. i'll check the batteries with my voltmeter and hopefully find the one that's damaged.

 

[ledhed]

update: turns out the key wasn't 'on', it wouldn't go to the 'on' position because the 'lock' pin was not setting itself in the right position on the battery lock/unlock mechanism therefore not letting the key turn to the 'on' position. so all is okay, no damage. i couldn't see the position of the key initially, i thought it DID turn to the 'on' position.