Can I retrofit "dumb" old 12 x 1,2V 4/3AA Ni-MH laptop battery pack (no balancing circuitry) with 4x 3,6V Li-ion cells + BMS module + thermal fuses? : r/batteries
Bulk 18650 2600mAh 3.7V Li Ion Rechargeable Laptop Battery for Replace Dead Laptop Battery - China Laptop Battery, Rechargeable Battery | Made-in-China.com