🛠️Used parts:
Arduino Nano: https://shorturl.at/CDrs5
Makita charger connector: https://shorturl.at/FXyoS
Spade terminals: https://shorturl.at/iqGX7
4,7k ohms 0.25W resistors: https://shorturl.at/FKcI7
M7AC charger: https://shorturl.at/OCfbv
OBI device build video: • I Solved the Biggest Makita 18V Battery Pr...