GZDW series DC panel cadmitic-nickel battery, floating charger, equipped with automatic detection and alarm device, with long service life, no pollution, easy maintenance, voltage stability, ultra-low internal resistance output, withstand large current impact, strong adaptability, high reliability, is a relatively ideal DC operation power supply device. It can be widely used in power plants under 500KV and below transformer and distribution, and can also be used in metallurgy, mining, petroleum, radio and television, computer room, underground railway, high-rise buildings and other departments, as DC control, signal power supply, power failure protection and short-circuit device operating mechanism switching power supply.