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 4Ah Rechargeable Sealed Lead Acid Battery. Ideal for ride on toys, torches, alarm systems, UPS & many more
9.6V 2400mAh Rechargeable NiMH Battery + KET 2P Connector USB Charger RC Car UK
Lithium 6V 12AH Rechargeable Battery Toy Car Electric Bike Feber Peg Perego