The Datalex NP7-6 SLA 6 volt UPS replacement battery is leak-proof and maintenance free. We have sizes and capacities available for all UPS brands. Check our UPS battery reference chart for the batteries required by your UPS make and model. Datalex’s valve regulated sealed lead acid (VRLA) design will not leak and is safe for shipping by air, sea, or ground. Can be mounted in any orientation. Absorbent Glass Mat (AGM) technology for efficient gas recombination of up to 99% Computer designed lead / calcium / tin alloy grid for high power density. Long service life in float or cyclic applications. Maintenance-free operation. Low self discharge.