Nitecore D4 Digicharger Smart Universal Charger with 4x 3400mAh Nitecore 18650 Batteries, Bonus Car Adapter and Bright Keychain Light - Compatible for Li-ion 26650 22650 18650 17670 18490 17500 17335 16340 (RCR123) 14500 10440 Ni-MH/Ni-CD: AA AAA A SC C Rechargeable Batteries Fully automated with overcharge, undercharge and reverse prolarity protection: Automatically detects battery status and selects the appropriate voltage and charge mode; Automatically stops charging when complete Include four high capacity Nitecore 3400mAh 18650, which can be charged simultaneously. Supported Battery Types: Li-ion: 26650, 22650, 18650, 17670, 18490, 17500, 17335, 16340 (RCR123), 14500, 10440; Ni-MH/Ni-CD: AA, AAA, A, SC, C Digital LED displays detail charging mode, progress, voltage, current for each battery Also includes a bonus car adapter & a bright Lumentac Keychain Light