Specifications Nominal Voltage 6V Rated Capacity（20 hour rate） 4.0Ah Dimension ?mm Total Height (with terminals) 107mm(4.21inch) Height 101mm(3.98inch) Length 70mm(2.76inch) Width 47mm(1.85inch) Weight 0.72kg(1.59pound) Characteristics Capacity 77℉(25℃) 20 hour rate 4.0Ah 10 hour rate 3.7Ah 5 hour rate 3.4Ah 1 hour rate 2.4Ah Internal Resistance Full charged Battery 77℉(25℃) 25mΩ Capacity affected by Temperature (20 hour rate) 104℉(40℃) 102% 77℉(25℃) 100% 32℉(0℃) 85% 5℉(-15℃) 65% Self-Discharge 77℉(25℃) Capacity after 3 months storage 91% Capacity after 6 months storage 82% Capacity after 12 months storage 64% Max Discharge Current 77℉(25℃) 40A(5s) Charging(Constant Voltage) Cycle Initial Charging Current≤1.2A 7.25～7.45V/77℉(25℃) Float 6.8～6.9V/77℉(25℃)