6V4ah Lead Acid Battery 6V 4ah SLA, VRLA, AGM Sealed Battery Multipurpose Rechargeable Product Overview WBDP GS640 belongs to our standard VRLA sealed lead-acid battery series. With dimensions 70*47*100mm and net weight 0.67kg, this compact 6V 4Ah maintenance-free battery adopts advanced absorption glass mat technology. It delivers stable, reliable standby & cyclic power for a wide range of small equipment, widely used in alarm systems, lighting, electric bikes, marine