Rollei Bullet HD actioncam with dead batteries
I found a Rollei action camera in the trash. Seems fully functional except it won’t take a charge. The shell clicks open after removing the four visible screws at each side of the camera. The camera has two lipo flat-packs wired in parallel and soldered to the board. Only one of the cells has a protection circuit, the other’s wired in behind it. Both cells have swollen significantly.
Battery specs:
- Two batteries, 220 mAh each
- Marked
-HPP 452030 - Dimensions: 30 x 20 x 5mm
- Slightly lower capacity replacement: https://www.tme.eu/dk/en/details/aky-lp402030/rechargeable-batteries/akyga-battery/aky0477/