Haze sealed 6 and 12v lead acid batteries hsc series haze hsc12 12 a sealed 12v lead acid battery that is completely maintenance free the haze hsc12 12 is optimised for security and alarm systems cctv emergency energy lighting systems marine or medical equipment capacity is quoted at the 20 hour rate at 25degc down to 17v per cell haze 12v 12ah sla battery hsc12 12