Battery Charger, Micro-USB, 4.4V
From Amazon
Nitecore UMS4 Universal Charger 3000mA USB Adult Unisex Black L 159 x W 107 x H 41
OnBuy
Nitecore UMS4 Universal Charger 3000 mA USB Adult Unisex, Black, L: 159 x W: 107 x H: 41
Conrad Electronic
NiteCore UMS4 Charger for cylindrical cells NiCd, NiMH, Li-ion, LiPolymer 10440, 10500, 12500, 12650, 13500, 13650, 14500, 14650, 16340, 16650, 17335, 17355,