Powery GEL battery for UPS APC Smart-UPS 1500 20Ah (replaces also 18Ah), 12V, 20Ah/240Wh, Lead-Acid battery, rechargeable, 181mm x 76mm x 167mm, 100% Compatible. New - AliExpress
12V 20Ah Akku, Hochstrom, AGM Bleiakku, battery-direct, 181x77x167 (lxbxh), Pol B1 (M5 Schraube und Mutter)
Amazon.com: VESTWOODS 12V 20Ah LiFePO4 Lithium Iron Phosphate Rechargeable Battery, 4500 Cycles, Low Temp Cutoff, 20A BMS, Used for Fish Finder, Wheelchair, Home Alarm, Fire Security Systems, E-Scooters : Health & Household