How to Make 1.2V Battery Charger | Automatic Battery Charger - YouTube
XTAR MC4S 18650 Battery Charger 4-slot Charger with Type C Charging Port Charge 4 Li-ion Ni-MH Batteries Simultaneously for 3.6 3.7V 10440 16340 17500 18350 18700 22650 26650 1.2V Ni-MH AAAA AA A SC C
Ni-MH battery charger using LM317T | Elec Circuit.com