These rechargeable solar light batteries are ideal for powering various devices, particularly solar lights and solar/wind devices. With a non-branded design and a chemical composition of NiMH, these AA and AAA batteries offer a capacity ranging from 600mAh to 700mAh at a voltage of 1.2V. Available in quantities of 4, 6, 8, 10, 12, or 20, these batteries are a versatile and environmentally friendly power solution for your energy needs.