Car Audio SVR SVR4000P Pure lead, low calcium, high tin, positive grids deliver quick, high rate power. Tank formed plates optimize cell voltage balance and performance necessary in multi-battery systems. Heavier, thicker plates are pasted from both sides for added durability. Puncture resistant glass mat separators lower internal resistance for superior high rate power while protecting against failures and shorts for maximum life. Tin plated, copper threade. . . Pure lead, low calcium, high tin, positive grids deliver quick, high rate power. Tank formed plates optimize cell voltage balance and performance necessary in multi-battery systems. Heavier, thicker plates are pasted from both sides for added durability. Puncture resistant glass mat separators lower internal resistance for superior high rate power while protecting against failures and shorts for maximum life. Tin plated, copper threaded inserted posts for easy installation and maintenance ensuring the highest current carrying capacities. Over 250 quality control tests... Your assurance of quality. Made in the U.S.A. 74 12 93.6 12.93 6.75 8.7 1 Year SLA 1-2 days SVR Yes http://site.apexbattery.com/logos/car audio.jpg New Insert M