What should we do if the battery is "starved to death" after being placed for a month? 5 methods are very effective!

What is the meaning of battery “starved to death?”

If the battery has not been charged for a long time, irreversible sulfation of the battery plates will occur and cause malfunction. The sulfation of the plates is mainly manifested as, voltage rises quickly during charging, air releases prematurely, temperature rises quickly, voltage drops quickly during discharging, and the capacity is small, that is, it cannot be charged, or even if it is charged a little, it will be discharged quickly.

How to prevent the battery from being "starved to death" after being placed for a period of time?

If the electric car is not used for a long time, you should choose to fully charge the electric car and charge it every 3-5 days, cut off the main switch or unplug the battery plug. Because beside battery self-discharge, the controller and other accessories will also lose power when placed. In this way, the battery can be protected to the greatest extent and its service life can be extended

What should I do if the battery is in a state of “starving to death?”

1st method: check the sulfation level of the plate

If the sulfation level is light, charge the battery one to two days by equalized charging, and it will get back to normal. If the sulfation level is pretty serious, charge and discharge the battery by “hydrotherapy” to return to normal. If the sulfation level is very serious, then the ordinary repair method has no effect. Increase the voltage to more than 10 V with the high-resistance repair by using the repair equipment, and then charge the battery, there is a certain probability that the battery can be reactivated.

2nd method: Disassemble the battery pack and charge it by single piece

Once the battery cannot be charged, the battery pack can be disassembled and charged by single piece. Due to the longer storage time of the battery, the charging time is longer than that of daily use charging.

3rd method: charging in parallel

The parallel charging method is divided into single parallel and whole group parallel, the principle is the same. The single parallel connection method can use a normally fully charged battery, directly connected to the depleted battery by connecting the positive electrode to the positive electrode and the negative electrode to the negative electrode. And the group parallel is to select a group of battery packs with the same voltage and saturation, connect the two groups of batteries in series, and then connect the total positive and total negative electrodes of the two groups of batteries. According to the principle of "battery charge battery", it can be charged normally.

4th method: choose a low voltage and current charger for charging

If the battery pack is 60V20AH, you can use a 48V-20AH charger to charge it. After charging for at least two hours till the voltage rises significantly, and then change to a 60V-20AH charger for charging. Usually, this method is feasible.

5th method: Special charger

The special charger has a repair function, which can charge the battery regardless of the battery voltage, and the repair rate is very high. At the end, we must remind users that if the battery fails to charge, the charger does not turn on the light, etc., please go to the repair shop in time. The repairer will use professional methods to test for you. Do not disassemble the battery at home without authorization, it is dangerous! Develop good charging habits, the battery will last longer!