How Long Does It Take for a 48V Lithium Battery to Be Fully Charged? What's the Difference with Lead-acid Batteries?

Ⅰ. Comparison of 48V lithium-ion battery and lead-acid battery

1. Gravity energy density: At present, the energy density of 48v lithium-ion battery is generally 200 to 260wh/g, lead-acid is generally 50 to 70wh/g, and the weight energy density of lithium battery is 3 to 5 times that of lead-acid, which means the same Under weight, the capacity of lithium batteries is three to five times stronger than that of lead-acid batteries, so lithium batteries have an absolute advantage in energy storage.

2. Volumetric energy density: Since the volumetric energy density of lithium batteries is usually about 1.5 times that of lead-acid batteries, under the same capacity, lithium batteries are about 30% smaller than lead-acid batteries.

3. Service life: At present, the most popular lithium battery materials are ternary lithium and iron lithium. For example, ternary lithium batteries typically have 1000 cycles, lithium iron phosphate batteries typically have over 2000 cycles, and lead-acid batteries typically have 300 to 350 cycles. Then it means that the life of lithium batteries is about 3 to 6 times that of lead-acid batteries.

4. Price cost: Lead-acid batteries are currently cheaper than lithium-ion batteries, which are about three times as expensive as lead-acid batteries. However, through life analysis, 48v Li-Ion batteries have a longer life if used for the same cost.

5. Environmental protection: lead-acid batteries are seriously polluted, and lithium batteries are relatively greener in terms of production and recycling.

Ⅱ. How many kilometers does the 48V lithium-ion battery run when fully charged?

The battery life of the 48V lithium-ion battery for sale is related to the capacity (Ah) of the battery itself and the motor power (W) of the electric vehicle. Now the standard electric bicycles on the market generally use 48V 12Ah lithium batteries and 350W motors. With the development of battery technology Their theoretical battery life can reach 50km, and the actual battery life is determined by the weight of the passenger and the weight of the vehicle.

How many kilometers a 48v lithium-ion battery can run with full power depends on the battery capacity, motor power, and load capacity. Generally speaking, 48V 12Ah, 350w lithium battery can run 50km. The 48v 20ah lithium ion battery pack can run 70km. The 72V 22Ah lithium battery can run 90km.

Ⅲ. How many hours does it take for a 48v lithium-ion battery to be fully charged?

The charging time of a 48v lithium-ion battery has nothing to do with the voltage. It mainly depends on the capacity of the lithium-ion battery and the power of the charger. Charging time = lithium battery capacity ÷ charging current. For example, if a 48V 20Ah lithium-ion battery uses a regular 48V 2A charger, the theoretical charging time is 2 hours, that is, 20Ah÷10A=2h, but in actual charging, the constant current is switched to the constant voltage mode, and the final trickle charging takes a long time. So under normal circumstances it is about 3 hours. In the same way, if you choose a 48V 5A charger, you need 20Ah÷5A=4h, but there is also a trickle time, so it is about 5 hours.