Quick view WANG SM650 (2 CELL) battery (replacement) BB-041541 From our selection of UPS/SLA batteries, you are looking at a brand new replacement WANG SM650 (2 CELL) battery. SLA stands for Sealed Lead Acid. SLA batteries are commonly found in cars, alarm systems, emergency lighting, medical devices, generators and... MSRP: Was: Now: $25.28 Add to Cart