The Power-Sonic PG-12V150FR rechargeable Power-Guard sealed lead acid batteries are maintenance free, easy to handle, rugged and economical. It has a characteristic of superb high discharge rate, flame retardant, long service life and deep discharge recover.. UL, CE, ISO9001 certified.. Flame retardant to UL94 V-O FEATURES . Long Service Life - Thick plate design and efficient gas recombination yield a service life expectancy of 10 years in standby mode.. Low Internal Resistance - Superb high-rate discharge characteristics ensure reliable performance in UPS and Telecom applications.. Maintenance-Free, Non-Spillable - Proven VRLA technology guarantees safe operation without maintenance and non-restricted article status for transportation.. Low Self-Discharge - Lead-calcium alloy grids and use of high purity lead account for superior shelf-life characteristics permitting storage for extended periods of time.. Designed-In Reliability - Cutting-edge manufacturing and process cont