Bosch 12V Battery Charger / Power bank

thingiverse

I modify the 3D model from ello911, because the battery cannot insert into the original mount. I don't have cable lugs, so I mode a plug base on perfboard and male pin. The perfboard is cutted to 21 x 15 mm. Once done, you can use a 12.6V battery charger to connect to the DC jack for charging, or use it as a 3S 18650 battery power bank, depending on your application.