INCLUDED: TN299 charger and 4 pack of Tenergy Centura C size rechargeable batteries with low self-discharge. TN299 charger is compatible with NiMH, NiCd, Li-ion, LiFePO4 rechargeable consumer batteries sizes AA, AAA, C, D, 9V, 18650, 14500, 10440 eliminating the need for multiple chargers. Supported batteries: NiMH/NiCd: AAA, AA, C, D, 9V; Li-ion/LiFePO4: 18650, 14500, 10400. (*Note: NOT compatible with Flat Top versions of 18650, 14500, 10400 batteries). TN299 Charger has independent charging slots with intelligent IC allow different combination of batteries* to be charged simultaneously. (*Note: If either Li-ion or LiFePo4 batteries are present, manually set the Li-ion/LiFe switch accordingly. Do not charge Li-ion and LiFePo4 batteries at the same time.) Easy-to-read LCD display with backlight allows you to monitor charging status in detail anywhere, anytime, even in the dark. Both the smart charger and rechargeable C size batteries include Tenergy's 12 months warranty Tenergy 4 pack Centura C size batteries and TN299 battery charger is ideal combo package for electronics that are powered by D size batteries. Centura batteries features low self-discharge meaning they will retain their power when not in use. TN299 charger can recharge NiCd, NiMH, Li-ion, and LiFePO3 battery chemistries and AA, AAA, C, D, 9V, 18650, 14500, or 10440 battery sizes. 4 independent charging slots means no need to recharge batteries in pair. TN299 charger recharges at 800mA when there are only 1-2 batteries charging, and at 400mA there are 3-4 batteries are inserted at the same time.