This used to happen with my drone batteries (because they are abused and I’ll suck every remaining bit of charge out of them in a flight, and they don’t contain a BMS circuit) until I learned to keep an eye on voltage and put them away with a “storage charge” and check on them every month or so. I’d stop the flight with some overhead to account for surges that may drop the voltage to below safe levels where before I’d run 'em until it almost fell out of the sky.
We had like six batteries for our (local firefighter department) drone, but always charging 2 to the may in case of an emergency. We already blew up one, three to follow. They are bloated a bit, but enough for them to get stuck in the drone often, and even a little bit is a lot for a rectangular battery. And they hold basically no charge anymore.
This used to happen with my drone batteries (because they are abused and I’ll suck every remaining bit of charge out of them in a flight, and they don’t contain a BMS circuit) until I learned to keep an eye on voltage and put them away with a “storage charge” and check on them every month or so. I’d stop the flight with some overhead to account for surges that may drop the voltage to below safe levels where before I’d run 'em until it almost fell out of the sky.
We had like six batteries for our (local firefighter department) drone, but always charging 2 to the may in case of an emergency. We already blew up one, three to follow. They are bloated a bit, but enough for them to get stuck in the drone often, and even a little bit is a lot for a rectangular battery. And they hold basically no charge anymore.