I’m new to the hobby, I’m flying a Speedybee Bee25 2.5" drone in beginner mode.
I started with two 850mAh Tattu 150c batteries. I know now that 150c is total overkill for the drone, but as I said, I was new, and they looked like a good deal.
I thought I’d looked after the batteries, use a genuine IMAX B6 charger, charge them to storage voltage if unused for more than two days, and stop flying at 14.0v.
After less than a few months the batteries started mis behaving. After just 1 min of soft fly time the voltage is at 14.0v. But when I take home and connect to charger the voltage has gone back up to high 15.x volts and takes very little to charge back to full.
I’ve since bought a few more Tattu 850mAh batteries, but this time 75c. These ones are behaving normally, I get decent flight time before they show 14.0v. When I get home the voltage has recovered to 14.3v-14.5v.
I don’t know if I mistakenly did something wrong and ruined the batteries, or was just unlucky.
