Tripp Lite Multi Vendor UPS Replacement Battery 2A -
Compatible with many brands and models including models BK200 BK250B BK280B BP280 BP280PNP BP280C BP280S BK300 BK400 BK400B BP420 BP420C BP420PNP BP420S BK500M PCPER PCPRO SUVS42
144772 - TrippLite - RBC2A