"specifications: Nominal voltage: 6v Nominal capacity (20hr): 4ah Maintenance: free Dimension(lxwxhxth): 70x48x100x106mm Weight/unit: 0.68kg" "advantages: * full range of lead acid battery, with capacity 0.8ah to 3000ah * maintenance-free * completely safe and sealed design * gas recombination * maintenance free * high discharge ability * low self-discharge rate * wide temperature range * powerful recover ability * long life cycle
