... 4. Fast charge 4.8V 80mah nimh button cell battery pack rechargeable Specifications: Model: Ni-MH KC80H button cellsVoltage: 4. ... .4. High Adaptability: can be made of any battery pack according to user's requirements, to meet customer product requirments ... flashlight, shave wool machine, electricity must knife, digital products, solar key ring, electric play toy, the head lamp, electronic dictionary, ...