Had my eTap for nearly 5 years now, but in the last 2 years I’ve now had about 5 batteries have the little tab at the bottom crack.
I’ve read posts on the web that others have had this issue, but not really seen anything to say what might be causing it. There was one guy who mentioned not getting too much degreaser on them (can dry out the plastic) and to avoid using the battery as a lever when removing the rear wheel. But I’m very careful with both those things.
The thing that’s worrying me is how often it’s happening now. Just wondered if anyone else has had the issue and worked out the root cause?! I know there are a few hacks out there to fix the broken tabs, but really I want to stop it happening in the first place :-/