Man, that is some REALLY bad luck in an electrical system....

I've run Cessnas with the same alternator to TBO on the engine, more than once. But, electrical gremlins can be hard to track down.

Good news is that there are lots of good lightweight choices out there now, compared to thirty years ago.....where everything was a pretty bad boat anchor and not a great alternator.....

MTV

The battery stuff was bad luck. What the alternator deal ended up being was a mount with a shot rubber bushing. I finally asked the Robair guy down in WA what the hell our guy was missing and he boiled it down to a mount. Seems there are 2 kinds, the newer expensive cast aluminum mount and the old steel type with a replaceable bushing, the latter being our kind. Apparently if that bushing gets worn it allows the alternator to vibrate which takes them out within hours. The old generators didn't really care what you did to them.

Yet another little known (to me) Cessna fact.