18650 lithium rechargeable battery

　　How to maintain electric car battery to prolong life

　　1. Do not replace the charger casually, and do not remove the speed limit of the controller. The chargers of various manufacturers generally have individual needs, so don't change the charger at will when you are not sure. If the continuation mileage is required to be relatively long, multiple chargers must be equipped for off-site charging, and the charging during the day should be supplemented.

　　1. Do not replace the charger casually, and do not remove the speed limit of the controller.

　　The chargers of various manufacturers generally have individual needs, so don't change the charger at will when you are not sure. If the continuation mileage is required to be relatively long, multiple chargers must be equipped for off-site charging, and the chargers that are supplemented during the day will be supplemented with additional chargers, and the original chargers will be used at night. Remove the speed limit of the controller, although it can increase the speed of some cars, in addition to reducing the safety of the car, it will also reduce the service life of the battery.

　　2. Protect the charger.

　　The general instruction manual has instructions on protecting the charger. Many users do not have the habit of reading the manual, and they often think of looking for the manual only after they have problems. It is often too late, so it is very necessary to read the manual first. In order to reduce costs, the current chargers are basically not designed with high vibration resistance. In this way, the chargers are generally not placed in the trunk and basket of the electric bicycle. In special cases, it must be moved, and the charger should be packed with foam plastic to prevent vibration and bumps. After many chargers vibrate, their internal potentiometers will drift, causing the entire parameter to drift, resulting in abnormal charging status. Another thing to pay attention to is to keep the charger ventilated when charging, otherwise it will not only affect the life of the charger, but also may cause thermal drift and affect the charging status. This will cause damage to the battery. Therefore, it is also very important to protect the charger.

　　3. Charge it every day.

　　Even if you don’t require a long battery life and you can use it for 2 to 3 days with a single charge, it is still recommended that you charge it every day, so that the battery is in a shallow cycle state and the battery life will be extended. Some early users of mobile phones thought that it is best to recharge the battery after it is basically used up. This view is wrong, and the memory efficiency of lead-acid batteries is not so strong. Frequent discharge of electricity will have a great impact on the life of the battery. After the indicator light of most chargers changes to indicate full charge, the battery charge may be 97% to 99%. Although only 1% to 3% of the power is undercharged, the impact on the continuation ability is almost negligible, but it will also form an accumulation of undercharge, so after the battery is fully charged and the light changes, it is best to continue floating charging as much as possible, which is also important for suppressing battery vulcanization. beneficial.

　　4. Charge in time.

　　After the battery was discharged, the vulcanization process began, and obvious vulcanization appeared at the beginning of 12 hours. Timely charging can remove minor sulfide. If it is not charged in time, these sulfide crystals will accumulate and gradually form coarse crystals. General chargers are powerless against these coarse crystals, which will gradually cause a decline in battery capacity and shorten the battery life. battery life. Therefore, in addition to charging every day, you should also pay attention to charging as soon as possible after use, so as to keep the battery in a full state as much as possible.

　　After the battery is discharged, sulfide will form quickly. Some people have tested that the discharged battery is placed for 24 hours, and white sulfide can be seen with the naked eye on the plate, and this sulfide is a very easy to crystallize substance. It is called sulfation, or vulcanization for short, and if it is not charged in time, it will accelerate the formation of this vulcanization. General charging methods cannot eliminate this vulcanization. Over time, vulcanization will become an important reason for capacity decline and shortened battery life. If possible, it is best to purchase a lead-acid battery capacity restorer with a pulse desulfurization and anti-sulfurization device, which can prevent and eliminate sulfide on the plate at any time.

　　5. Regular deep discharge.

　　A regular deep discharge of the battery is also conducive to "activating" the battery, which can slightly increase the capacity of the battery. The general method is to fully discharge the battery at regular intervals. The method of complete discharge is to ride the bicycle to the first undervoltage protection under the condition of normal load on a flat road. Note that we put special emphasis on the first undervoltage protection. After the first undervoltage protection of the battery, the voltage of the battery will rise after a period of time and return to the non-undervoltage state. If the battery is used again at this time, it will cause great damage to the battery. If this kind of recycling is used for riding Several times, it may cause the battery to be completely scrapped. After complete discharge, fully charge the battery. You will feel that the battery capacity has increased.

　　6. Develop some good habits of saving electricity.

　　Take advantage of skating whenever possible. When going downhill, try to use early power off to coast to slow down. Enter taxiing early when you are about to encounter traffic lights to minimize braking. A friend told me that he would rather turn one more turn than brake one less time, which makes sense.

　　When starting, it is best to add riding assistance, which can not only increase the starting speed, but also reduce battery power loss and life damage.

　　7. Pay attention to the charging environment.

　　The best ambient temperature for charging is 25°C. At present, most chargers do not have an automatic control system to adapt to the ambient temperature, so most chargers are designed according to the ambient temperature of 25°C, so it is better to charge at 25°C. Otherwise, it is inevitable that there will be problems of undercharging in winter and overcharging in summer. However, when the ambient temperature is really 25°C, it is relatively small, so there must be a problem of overcharging in summer and undercharging in winter. Fortunately, most families now have the conditions for indoor temperature regulation. In this way, when charging, it is best to arrange the battery and charger in a ventilated and temperature-regulated environment.

　　A special reminder is that when the battery enters a warm room at an outdoor low temperature in winter in the north, frost and condensation will appear on the surface of the battery. In order to prevent battery leakage caused by frost and condensation, the battery should be charged after the temperature of the battery has risen to be close to the room temperature and dried.

　　8. Make full use of maintenance conditions

　　Many e-bike dealers offer battery overhaul and repair services, and you should take advantage of these services. Some brands of electric bicycles propose an overhaul of the battery.

　　For example, regular maintenance of the battery can reduce damage to the battery. Repairs to the battery's state of charge can mitigate "battery lag" failures, and these are a breeze for dealers equipped with repair capabilities. Regarding water loss, the effect of replenishing water when the battery capacity is 70% is better than that when the battery capacity is 40%. Even some brands of products also pointed out that if they are not overhauled by the specified time, it is equivalent to giving up the warranty period of the battery. Make consumers suffer losses that should not have occurred. Therefore, consumers should make full use of the conditions of battery maintenance to extend the service life of new batteries.