Let's start a registry of bad batteries. Copy the template below for each one of your batteries that is suffering from premature low voltage and auto landing. I have five batteries. The first two I've used for about 50 cycles and both are exhibiting premature voltage sagging resulting in an auto landing. Both batteries appear very much like new with only a barely noticeable puffing. Both hit the 10.7 volt limit at about 50% which is typically 9 minutes into the flight. This has been a slow and steady decline. They used to make it to 35% before hitting the voltage limit. And before that, I could fly them to 20% most times. Now, they're almost useless. This appears to be the case with many people. My two bad batteries: Battery No.: 1 Cycles: 52 Percent life: 83% Autoland percent: 50% Autoland time: 9 minutes Puffing: barely noticeable Damage: none Serial No.: unknown Round/square contacts: round Battery No.: 2 Cycles: 51 Percent life: 83% Autoland percent: 50% Autoland time: 8 minutes Puffing: none Damage: none Serial No.: unknown Round/square contacts: round I suspect my 3rd battery won't be far behind. Copy the format above and list your bad batteries here!