Hi ESFMs,
I recently had to swap out one of my packs on my bike due to issues I'll be diagnosing later.
The pack I just swapped in is a 48v 20Ah and I only used it for around 5-6 months in it's previous life. I put it away at the time because I was upgrading to a 30Ah.
At the time it was in excellent working order and had it's full range. But now, it doesn't charge all the way full (stops charging at around 52.6v) and it starts shutting down as early as at around 49v. I can unplug and plug back in to get it going again but then I have to feather it to avoid shutdowns, which end up happening anyway. Makes my ride an infuriating one.
Anyway, since I stored this pack for over 3 years, it's clear that maybe it's degraded. I think I might have stored it fully charged for some of that time but later on, I made a point to drain down to half. But it might have been too late when I did it sometime last year.
Does this check out? Is this what you can expect from over storage of a pack or does it have a different issue?
Also, and mainly, how long can you get away with storing a pack before it's no good no more?
Its frustrating because it makes keeping a spare almost unfeasible if they're gonna die in storage.
Clinton
I recently had to swap out one of my packs on my bike due to issues I'll be diagnosing later.
The pack I just swapped in is a 48v 20Ah and I only used it for around 5-6 months in it's previous life. I put it away at the time because I was upgrading to a 30Ah.
At the time it was in excellent working order and had it's full range. But now, it doesn't charge all the way full (stops charging at around 52.6v) and it starts shutting down as early as at around 49v. I can unplug and plug back in to get it going again but then I have to feather it to avoid shutdowns, which end up happening anyway. Makes my ride an infuriating one.
Anyway, since I stored this pack for over 3 years, it's clear that maybe it's degraded. I think I might have stored it fully charged for some of that time but later on, I made a point to drain down to half. But it might have been too late when I did it sometime last year.
Does this check out? Is this what you can expect from over storage of a pack or does it have a different issue?
Also, and mainly, how long can you get away with storing a pack before it's no good no more?
Its frustrating because it makes keeping a spare almost unfeasible if they're gonna die in storage.
Clinton