1. Every Single battery charging :

In this case, you can charge each single battery in the entire battery pack, which will increase the chance of activating the battery. 

Use a 12V charger to charge each battery. Since the battery has been left for a long time, the charging time is longer than usual.

2.Low voltage charging :

At this time, you can use a smaller charger for charging, which is feasible in most cases. 

For example, if the battery pack is 60V-20AH, you can use a 48V-20AH charger to charge it. 

After charging for at least two hours, the voltage rises significantly, and then switch to a 60V-20AH charger for charging.

3.In parallel:

The parallel connection method is divided into single parallel connection and entire group parallel connection, and the principles are the same. In the single parallel connection method, a normally charged and saturated battery can be directly connected to a depleted battery by connecting the positive electrode to the positive electrode and the negative electrode to the negative electrode. For the entire set of parallel connection, a set of battery packs with the same voltage and saturation is used to connect the two sets of batteries in series, and then the total positive and total negative poles of the two sets of batteries are connected respectively. According to the principle of "battery charging battery", it can be normal. Recharged.

4.Special charger :

Use a charger with a repair function to charge the battery. No matter how many volts the battery voltage is, this charger can charge it, and the repair rate is very high. If your battery has this kind of charger, then you don’t have to worry about the battery being damaged. Can't charge.

Although these battery activation methods are very practical, Newtop still reminds everyone: Pay attention to maintenance when using batteries, and charge electric vehicles frequently to avoid leaving the battery for too long, causing it to become vulcanized and unable to be repaired, so it can only be scrapped and replaced with a new one. Cause unnecessary losses!