Only $2 for 5 pcs PCBs and Free SMT Assembly at JLCPCB& Get $54 for New Users: https://jlcpcb.com/cyt

In this video I will show how we can build our lithium battery pack for an old ups. It double up the backup time. I used my Homemade Spot welding machine to weld all the batteries together.

Welding Machine video link-    • BUILD A DIY SPOT WELDING MACHINE  

Material Used-

1. 18650 Li-ion cell 2200mah (21nos.)
2. 3cell BMS Circuit
3. Nickel Strip and Spot Welder
4. Insulation Sheet
5. Silicon Wire 12AWG
6. Glue

Thanks for watching this video.