Eight hours Max.
72-32 lithium battery full charge generally takes up to 8 hours, the general electric vehicle battery pack charging needs two conditions, charging for eight hours, the charger's green light, to meet a condition, of course, must be the need for the original charger. 72 volts, 32 amps of lithium at 25 degrees, two wheelers, 1000 watts of power, a person can run 120 kilometers without a problem.
Lithium battery charging precautions
Care should be taken to avoid overcharging the battery, and any form of overcharging of the lithium-ion battery will cause serious damage to the battery performance and even explosion.
Avoid deep discharges below 2V or 2.5V, as this can quickly and permanently damage lithium-ion batteries. Internal metal plating may occur, which can cause a short circuit and make the battery unusable or unsafe.
Most lithium-ion batteries have an electronic circuit inside the battery pack that disconnects the battery if the battery voltage drops below 2.5V when charging or discharging, exceeds 4.3V, or if the battery current exceeds a predetermined threshold
72v32a charge 6 hours full: 72-32 lithium battery full charge generally takes up to 8 hours, the general electric vehicle battery pack charging requires two conditions, charging eight hours, the charger's green light, to meet a condition, of course, must be the need for the original charger. The rated voltage of the charger is 72 volts, and the rated maximum charging current is 2 amps, then the charging time is 2304 watt-hours \/(72 volts ×2 amps)=16 hours. That is, the 72v32a battery needs 16 hours to charge.
Normal charging limit current 3.2 amps, about 12 to 14 hours, if fast charging, the time will be shorter, will affect the battery life.