Batteries in a Flash is proud to offer National batteries, a Premium maintenance-free sealed lead-acid battery (SLA), with an expected life between 3-5 years. The battery has no-spill design and it can be operated in any orientation. It is multi-functional for both cycle and standby use. Commonly used for emergency lighting, UPS (Battery backup), fire alarm and security systems, lighting systems and many other applications. This replacement battery has a 1 year warranty and is guaranteed to meet or exceed OEM specifications and performance.