How do you draw down a battery for long storage?

[PedalUma]

Worth separating two things here: calendar aging isn't linear with charge % it accelerates sharply above roughly 80-90% SOC, then flattens out. So Jim's 7/10 bars is a solid landing spot; you don't need to chase exactly 50%. Mike_V/Roamers storing full and being fine probably just means their BMS caps "100%" below the true steep zone.

One thing worth tracking though: during long storage, is anyone topping the pack back up every few months? Deep self-discharge tripping the BMS low-voltage cutoff is usually the more damaging failure than storing a bit high.

Funny, you sound like AI. My batteries charge to 90% consistently. Then every couple of months I can charge to 100% just before a ride to load level the cells.

 

[Gionnirocket]

And everyone's anecdotal facts are just that and touting that you're smarter than industry experts and manufacturers just makes you sound like a moron.

 

[Gionnirocket]

I did it (enough for me anyway..) It took 110 'leaving the lights on' before I got what should be a suitable result: 7 green bars out of 10. My next project is 'spoke tension'. ...some of us 'need projects'. Cheers.

Jim

You may want to get it a little lower for long term storage.
I'd shoot for 60% and you may want to store the battery out of the bike unless it has a physical Off switch.
Maybe wait by the icecream truck and sell rides to the neighborhood kids