Vintage Japanese Flashlight Restoration

Vintage Japanese Flashlight Restoration Video Original Flashlight 6 D-batteries x 6 = Light bulb x = Waterproof New Flashlight 6 Lithium batteries 21700 4500mah Rechargeable Battery pack 10C 12V 9Ah 108Wh Lamp bead 30W 8A Reflector diameter 11 cm 3.4 hours usage Waterproof Battery Information ($8) Model: 21700 Size: 21 mm in diameter, 70 mm in length Weight: about 68g Rated voltage: Capacity: 4300-4500mah Internal resistance: about 15 Charging voltage: Discharge cut-off voltage: Discharge current: 3C discharge (5C discharge can be achieved instantly) BMS information ($2) BMS 3 series 20A lithium battery protection board (with recovery function-AUTO Recovery) This product is an enhanced version: suitable for electric drills with starting current below 60A. Scope of application: Lithium batteries with nominal voltages of and (including 18650, 266