The lithium battery of electric scooter can only be used for 3 years? These few techniques can double the battery life!
In recent years, with the advancement of lithium battery technology and the reduction of production costs, lithium-ion electric scooters with lithium batteries as the main power source of industrial design companies have also flown into the homes of ordinary people. Compared with traditional lead-acid batteries, lithium batteries are of high quality. Lightweight, long cycle life, high energy density, fast charging speed and other advantages. The service life of most lithium batteries is designed to be about 1,000 times (ordinary ternary lithium battery materials), which is 3-4 years. But this does not mean that after 3-4 years of use, the life of the lithium battery will end. As long as you pay attention to these points, the life of the lithium battery of the electric scooter can be doubled! Let's take the current mainstream ternary lithium battery as an example. The mainstream manufacturer produces lithium batteries with 18650 cells. The main characteristics are high energy density, high cycle life, moderate manufacturing cost, but relatively high requirements for use environment and charging.
1. Lithium batteries are afraid of cold and heat, do not use them in extreme environments
Many people like to put lithium battery electric scooters in the sun in summer, or park in the yard or on the road in winter, which is very detrimental to the service life of lithium batteries. Lithium ions are in the electrolyte and electrode sheets. Migration rate is closely related to temperature. Theoretically, the temperature can be used normally between -20℃-55℃. In daily life, the use temperature of lithium battery between 5℃-35℃ will not harm the lithium battery. Users in the north Take the lithium battery home as much as possible in winter, and don't put it outdoors. Users in the south should avoid exposure in summer.
2. Do not charge and discharge lithium batteries frequently
Many people think that the number of cycles of charging the lithium battery hundreds of times in the manual of the electric scooter means that it can be used once as long as it is plugged and unplugged. In fact, this is a misunderstanding. The manual actually refers to the number of complete re-discharges. Lithium batteries are different from nickel-cadmium batteries. , Lithium battery does not have any memory effect and can be charged anytime and anywhere. Charging when the battery has residual power will not shorten the service life, but also can maintain the battery and extend its recycling cycle. For lithium batteries, the correct way is Slow charge instead of deep charge.
3. Charge with a suitable charger to avoid high current
The chemical activity of lithium batteries is much more active than that of lead-acid batteries, and the requirements for chargers are higher. Once a brand-name charger or unsuitable fast charger is used, it will not only affect the service life of the lithium battery itself, but also seriously cause overheating. It causes the diaphragm to break and short-circuit and explode. In addition, the 18650 battery is 3c discharge, your electric scooter is 350w, and the battery used is lower than the discharge current of your electric scooter. This will cause the lithium battery temperature to be too high, the current is too large and the life is shortened. In the case of bulging scraps, if your electric scooter is very powerful and fast, it is recommended to choose 18650 batteries with 10c current, so it is obviously very important to choose the right battery!
4. Do not "full charge" or "overcharge", do not need to "activate" the lithium battery
After many users buy lithium batteries for electric scooters home, they still charge the lithium batteries for 10-12 hours in the first three times according to the method of lead-acid batteries, thinking that the lithium batteries need to be activated. In fact, this affects the life of the lithium batteries. Even more bizarre people think that the superstition of trickle charging is to continue charging the electric scooter for an hour after it is fully charged to offset the interference of internal resistance. These practices are all wrong. The correct approach should be to directly charge after fully charged. Unplug the power supply. Try not to charge the lithium battery of electric scooters overnight, which is prone to fire.
5. no need to store at full power
When buying lithium batteries for electric scooters (18650 batteries) of industrial design companies, they are generally 2-3 cells, and there are few fully charged ones. Long storage time when fully charged will reduce the capacity of the lithium battery. In addition, you also need to pay attention to choosing a better quality protection board. Pay attention to these points, your electric scooter car lithium battery is no problem for five or six years.