... energy into electricity being saved in the rechargeable NiMH battery inside the device. Thus the battery can supply power to cell phone, radio ... . Accessories: main unit x 1pc, earphone x 1 set, 1600mAH NiMH battery x 2pcs, DC power cord x 1pcs,rope x 1pcs ... .In sunny days, you can use sunlight to charge rechargeable NiMH battery. You can directly use sunlight to charge various brands of ...