12v 50ah UB12500 UPS Battery replaces 40ah MK Battery M40-12 SLD M
$127.95
12 Volt 50 ah UB12500 Sealed AGM Uninterruptible Power Supply UPS Backup Battery offers more power, but fits a 40ah battery dimensions. It replaces and upgrades the 40ah MK Battery M40-12 SLD M. Item 45977