battery-5S-dat

• tools-mechanical-power-dat - battery-5s-dat - CONN-power-dat - CONN-tools-mechanical-power-dat

• tools-mechanical-power-dat - battery-pack-dat - battery-5s-dat - battery-4s-dat

voltage == 4.2 * 5 = 21V

JH5S09

1500mAh * 5 JH3451D

unknown chip

ref