Nitecore D2 Digicharge universal home/in-car battery charger, Two Nitecore 18650 NL189 3400mAH rechargeable batteries with 2 X EdisonBright AA to D type battery spacer/converters Capable of charging 2 batteries simultaneously; Each of the two battery slots monitors and charges independently Compatible with and identifies Li-ion (26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries Optimized charging design for IMR batteries; Integrated LCD panel clearly displays charging parameters and progress; Two conveniently located side buttons allow easy selection of specific battery types and charging parameters 3400mAh 3.7V 18650 Li-ion Rechargeable NL189 Batteries 2 pack included 2X Nitecore NL189 3400mAh rechargeable batteries, 12V power cable, 2X EdisonBright AA to D battery converter spacers included. These allow use of rechargeable AA batteries in D battery equipment.