How many hours does it take to fully charge a 48V12 battery?
2 Answers
48V12 battery takes 7 hours to fully charge. The charger equipped with a 48V12Ah battery is 48V1.8A. It takes about 7 hours to fully charge a 12Ah battery. If the battery is completely discharged, the charging time may exceed 7 hours. If the battery still has half of its power left, the charging time will be around 3 hours. The service life of the battery is usually 2 to 3 years. After more than 2 years of use, the battery's capacity and discharge ability will decline. In this case, attention should be paid to the battery's condition. If any abnormalities occur, the battery should be replaced in time to ensure the normal use of the car.
I remember coming across this 48V 12Ah battery when helping a neighbor with car repairs. Based on my experience, it usually takes 10 to 12 hours to fully charge using the standard 1-amp charger. The battery capacity is around 576 watt-hours, and the charging speed depends on the current; higher current means faster charging, but I don't recommend speeding it up—for example, using a 2-amp charger for 6 hours might seem convenient, but it can easily overheat and damage the cells, shortening the battery's lifespan. For daily use, like in small electric scooters or backup power supplies, I suggest making it a habit to charge overnight, avoiding interruptions or fast charging, which helps preserve battery performance. If you notice the charging time is unusually long, check if the charger's socket has poor contact or if the battery might be aging and need replacement—don't overlook these small details.
