6V 4.5Ah Sealed. Maintenance free. Can be used in any position. For standby power this range has a nominal 5 - 8 year life.
Yuasa Yucel Y4-6 6v 4ah Rechargeable Battery VLRA AGM No Spill Aroma 3-FM-4 6V
PS640 6V 4AH Rechargeable VRLA Battery - XINLEINA 3-FM-4.5 6V 4.5AH-4/20Hr
MXJFYY LiFePO4 6V 6Ah Rechargeable Battery with BMS Protection for Ride-on Toys. Lithium Iron Phosphate Battery for Flashlights, Alarm Systems, UPS,Motor Boats Camping Solar Panels
6V 12Ah Rechargeable ELECTRIC KIDS RIDE ON CAR BATTERY. AUDI-JEEP ETC .
VARTA MEMPAC NiMH 3CELL 3.6V 150mAH RECHARGEABLE Fruit Machine Backup Battery