Lithium-ion batteries, with their excellent performance, have become the ideal power source for the new generation of electric bicycles. When charging lithium batteries for electric bicycles, it's best to follow the charging instructions in the datasheet, or calculate the charging time based on the battery capacity and the charger's current rating. What are some specific precautions for charging lithium battery electric bicycles? Read on!
1. When charging lithium batteries for electric bicycles, it is best to follow the charging instructions in the datasheet. If not, you need to calculate the charging time based on the capacity of the lithium battery and the current of the charger. For example, a 48V/20A lithium battery with a 5A charger will take a little over 4 hours to charge, a 10A charger will take a little over 2 hours, and a 20A charger will take one hour.
2. Generally, newly purchased electric bicycle lithium batteries are new and have a large capacity, so they will take longer to charge, up to 10 hours or more without changing the charging indicator. This time will gradually decrease, and after about 2 months it will decrease to 6 hours. After that, it will remain constant for about 6 months. The battery capacity will continue to decrease, and after 1 year it will only take 3-4 hours to fully charge. Of course, the battery will be about time to be replaced or require maintenance.
3. After purchasing an electric bicycle, the lithium battery usually has about 80% charge. It should be charged as soon as you get home. The charging time should be 4 hours after the charger indicator light changes, and this should be done three times.
4. Do not charge the lithium battery of an electric bicycle for too long; one hour after the charger indicator light changes is ideal. It's better to undercharge than overcharge, otherwise the battery may swell and bulge due to dehydration, causing irreparable damage to the lithium battery.
5. If possible, swap the individual cells in the entire electric bicycle lithium battery pack. For batteries past their warranty period, add 3-4 ml of deionized water to each cell every three to four months.
6. The discharge port and charging port of the entire electric bicycle lithium battery should be kept clean at all times to prevent copper rust from forming at the contact points, which could cause poor contact, overheating, and damage.
7. Before the first charge, the lithium battery of the electric bicycle should be fully charged, but not completely drained. When you first buy an electric bicycle, the battery won't be fully charged, but it also won't be too low, unless it's an old or low-quality battery. When using it, you should estimate the approximate range based on the seller's estimate to avoid running out of power or overcharging.
8. Lithium battery electric bicycles do not require special activation methods; the lithium battery will activate naturally while the electric bicycle is in motion.
9. Performing a deep discharge periodically can also help "activate" the battery and slightly increase its capacity. The general method is to perform a complete discharge of the battery periodically.
