Odd for the batteries to swell up. They are intelligent so manage the charge if they are not used for a while. Maybe just an unfortunate bad batch(?)
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Odd for the batteries to swell up. They are intelligent so manage the charge if they are not used for a while. Maybe just an unfortunate bad batch(?)
Yes, that's right, I'm very sorry I couldn't take care of the battery properly. But this incident will be my experience in the future. I will take care of it after using it to fly.