Method and apparatus for supplying electrical energy to battery

Method and system for balanced control of backup power

Method and system for balanced control of backup power

Method and system for controlling and recovering short...

Multi-layered cell, particularly a liquid crystal display...

Multiple battery comprising a cranking battery and an auxiliary

Optimized battery performance

Photovoltaic device

Photovoltaic-storage battery device

Portable disposable fuel-battery unit for a fuel cell system

Portable power supply using hybrid battery technology

Power source for an electrical device

Power supply and control method therefor

Power supply systems for portable electronic devices

Power supply unit

Process for generating electric power using air and water, and a

Sealed batteries with zinc electrode

Sealed rechargeable battery

Solar energy power supply system

Solar power building block