I have had my battery stored in the house for winter but put it back on the bike for a ride, when I came back since it was warm and in the garage I left it on the bike, turned it all off and when I returned a week later it is dead as a doornail! I recharged it last night and back to full charge now. What could drain the battery when everything is off???? I didn't plan on removing it every ride in the summer since it sits warm and dry in the garage.
Do You Remove the Battery when not riding?
- Thread starter Jerry LM
- Start date
harryS
Well-Known Member
If the battery has an on/off switch, shouldn't matter if you remove it or not.
The battery protection circuit draws power off a few cells. If you didn't charge it all winter, and then did some riding, maybe those cells got a little lower afterwards and caused the BMS to shut off the battery. Luckily they weren't so low that it shut off the battery for recharge (it happens).
Give it a long charge, and the BMS should rebalance the cells. I don't like to leave my packs charging indoors, so I do that outside.
The battery protection circuit draws power off a few cells. If you didn't charge it all winter, and then did some riding, maybe those cells got a little lower afterwards and caused the BMS to shut off the battery. Luckily they weren't so low that it shut off the battery for recharge (it happens).
Give it a long charge, and the BMS should rebalance the cells. I don't like to leave my packs charging indoors, so I do that outside.
From his description it doesn't sound like BMS put battery into sleep due to inactivity.
Could be what HarryS said - BMS shut it down when some cells became imbalanced after winter (partial) self-discharge coupled with one ride afterwards.
He rode the bike after winter storage, then left it for a week, and when he came back it was "dead", - whatever it means.
Should've charged it full 100% after winter. Normally 100% is not a good idea, but once in a while this should be done for balancing purposes.
Could be what HarryS said - BMS shut it down when some cells became imbalanced after winter (partial) self-discharge coupled with one ride afterwards.
He rode the bike after winter storage, then left it for a week, and when he came back it was "dead", - whatever it means.
Should've charged it full 100% after winter. Normally 100% is not a good idea, but once in a while this should be done for balancing purposes.
6zfshdb
Well-Known Member
- Region
- USA
- City
- Northeast Pennsylvania
Maybe not, it's hard to tell from the op's description.
I had two of my five Pedego batteries go into sleep mode after just a week of inactivity. I'm not sure why the other three did not since they were all charged at the same time. I suppose there are a lot of variables involved.
City Commuter
Active Member
No, only when I charge it. My original Pedego battery is going on five years and still holds a 80-90% after three months of sitting.
Nope. He said he rode it after winter, left if for a week and then it was "dead". Unknown state of charge at the beginning of that ride, at the end of that ride, at the end of one week storage (other than it was "dead"), and at the beginning of charging.
Not that the battery bars on the display are a reliable measure of state of charge...
City Commuter
Active Member
What is sleep mode?
Few possibilities:
1) It wasn't 100% when you started the ride, minor self-discharge during winter. Bars indicator is approximate, it measures voltage, and voltage curve is near flat on this stage, bars could remain the same.
2) Same for 90% - indicator is not accurate.
3) No matter whether it was 95% or 80%, it is possible that some cells got out of balance during stage 1 and 2, and BMS shut it down.
4) Battery is beginning to fail, and then anything can happen. Severely diminished capacity. It reads 100% but only holds a fraction of what it should've.
Last edited:
Similar threads
