Drill Battery Rebuild - NiCd to Lithium

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.

Part list:

• Battery holder for 18650 size batteries
• 3x Sony VTC4 18650 2100mAh 30A batteries
• BMS to control charge/ discharge

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