Nes battery is used for nes systems or network energy sources. This nes accessory is a battery backed dc standby power system that is designed for data network devices. This electrical part provides 4 hrs of battery capability to keep power over ethernet and network equipment operating in blackouts and other emergencies. This electrical component is designed to provide uninterrupted operation during power outrages. This industrial battery can be ideally suit to the ip systems and security system devices. They provide power supply of approximately 4 hrs with a 48 volt battery backed dc power system. They are featured with telecom grade standby power, battery charge indicators, smart battery monitoring and upto 16 rechargeable battery packs. The nes provides the highest level of standby power security. They secure power solution for voice over ip, digital pbx and other data network devices, power over ethernet devices etc.