[leoedin]

> I'm pretty sure your frame wasn't designed to carry this 22 pound battery or anything like it

Presumably bike frames are designed to carry larger riders? 22 pounds is well within the normal range of "adult". Apparently most bike frames are designed for riders up to 120kg - so the OP could easily be 40+kg below that.

[0xWTF]

Bicycle frames are highly optimized to have the loads concentrated at specific points, namely the seat, bottom bracket, and wheels. The lugs are heavy, and the tubes are very thin almost everywhere else. This appears to be putting load at focal points along the thin wall regions. Every time you hit a bump, the battery hits the frame, like hitting the thin wall of a soda can with a hammer.