For twelve years I’ve had really good luck with the PC680 battery up until about two years ago. Now they’ve become unreliable and I can no longer count on them like I used to. Dangit!

I would like to retain the same battery box with 7.5x3x6.65 L/W/H. In the Cessna it can be a bit wider than 3” but not more than 4”.

Little help please? LiPo? Better gel? ...?

thx,
jon