SPS Brand 12V 8Ah Replacement Battery for BB SH1228W UPS Battery : Health & Household - Amazon.com
MIGHTY MAX BATTERY 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack MAX3429277 - The Home Depot
Mighty Max Battery 12V 9Ah SLA Battery Replacement for BB SH1228W Rechargeable Sealed Lead Acid 1290 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com