【USB Charge Design】D Cell batteries No need charger and adapter,fast full charge in about 2 hours,easy to charge with usb cable, just simply plug into USB ports Rechargeable Lithium D Batteries Power for your nonstop family’s must-have devices like toys, flashlights, clocks, remotes, and more 【 Rechargeable D Batteries】Rechargeable usb D battery with 1000+ cycles , save your big money comparing with the single use batteries. 【Rechargeable Lithium D Battery】Mercury, cadmium and lead are not used in these lithium d rechargeable batteries, saving thousands of alkaline batteries and reducing a significant about of landfill waste. Compatible with 1/2/3/4 AA, AAA, C, D Ni-MH Ni-CD rechargeable batteries and 1/2 9V Ni-MH Ni-CD batteries Lithium D Batteries