Characteristics of battery 6v 4.5ah lead-acid e-bike battery Capacity 25°C(77°F) 20 hour rate(0.225A) 4.50AH 10 hour rate(0.41A) 4.10AH 5 hour rate(0.77A) 3.850AH 1 hour rate(2.70A) 2.70AH 1.5 hour discharge to5.25V 1.8A Intemal Resistance For Full Charged Battery at 25°C(77°F) 16mΩ Capacity affected by temperature(20hour rate) 40°C(104°F) 102% 25°C(77°F) 100% 0°C(32°F) 85% ~15°C(5°F) 65% Self-discharge at 25°C(77°F) Capacity after 3 months storage 91% Capacity after 6 months storage 82% Capacity after 12 months storage 64% Terminal T1 Charge(constant Voltage) Cycle Initial Charging Current less than 1.8A Voltage 7.20~7.50V Time14~16H Float Voltage 6.75~6.90V