Drill/ screwdriver battery rebuild to Lithium using battery holder for 18650 cells (so no spot welding needed) and BMS. After rebuild original charger can be used for charge.
- Battery holder for 18650 size batteries
- 3x Sony VTC4 18650 2100mAh 30A batteries
- BMS to control charge/ discharge
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Soldering
At first I soldered wires to battery holder, after that soldered BMS board and battery pack plug
BMS was glued to battery holder using double sided tape
Step 2: Fitting
Little bit of cutting and now batteries fit battery pack case
Then secured using electrical tape
Check fit, done
Step 3: Charging
As BMS was used, original charger can be used for charging
Step 4: Finished
It was quick and simple battery pack rebuild
Screwdriver works as expected