For the first charge of an Electric Car, it's not necessary to intentionally discharge the battery completely before recharging. Lead-acid batteries don't have a memory effect. It's generally recommended to charge the battery pack when the remaining capacity is 30%–40%, and it's generally not recommended to exceed 12 hours.
Theoretically, the lower the charging current, the better. Because with a lower current, the crystals formed in the reaction are finer, the reaction is more complete, and more energy can be stored.
Furthermore, a lower current results in less battery heat generation, making the plates less prone to deformation and preventing the shedding of effective material from the plates.
Dedicated smart chargers use decay current charging, meaning a larger current is used initially, and as the battery voltage rises, the charging current automatically and gradually decreases until the voltage reaches approximately 13V, at which point charging automatically stops.
On rainy days, MG Electric Car should be parked in a sheltered area to charge, as water is a conductor, and charging an Electric Car in the rain could result in electric shock.
When charging an Electric Car, pay attention to the positive and negative terminals of the charger. Reversing the polarity may damage the battery. Therefore, this aspect requires strict attention.