Nitecore D2 Digicharger Smart Charger with Car Adapter and Keychain Light - Compatible for Li-ion 26650 22650 18650 17500 16340 (RCR123) 14500 10440 Ni-MH/Ni-CD: AA AAA A SC C Rechargeable Batteries 2 channel charger; Fully automated with overcharge, undercharge and reverse prolarity protection Automatically detects battery status, selects appropriate charge mode and stops when complete Supported Battery Types: Li-ion: 18650, 17650, 16340 (RCR123), 14500, 10440; Ni-MH/Ni-CD: A AA AAA A Digital LED displays detail charging mode, progress, voltage, current for each battery Also includes a bonus car adapter & a bright Lumentac Keychain Light