There is a lot of talk about battery modifications for electric vehicles. Some people say that all battery modifications are coaxing, and some people say that the battery can be modified, and the modified battery is the same as the new battery. Here are a few fixes.

battery is unbalanced

First test this group of batteries, then find out the problem battery, and finally use the batteries with capacity, voltage, self-discharge, battery internal resistance, etc. to match this group of batteries before they can be used.
The battery loses water and liquid
Batteries losing water is the most common problem and easier to fix. First, pry off the cover above the battery, open the rubber cap, expose the vent hole, and use a dropper to inhale distilled water into the battery through the vent hole. Cover the vent hole with a breathable cover to prevent dust from falling into the vent hole. The principle of hydration is to prefer less than more. It is impossible to add more, and the proportion of acid will decrease, and the capacity of the battery will be insufficient.
Sulfation of battery plates
 The vulcanized battery is modified with a special modifier. After measuring the condition of the battery, positive and negative variable frequency particle waves are continuously emitted during charging and discharging, and it takes 10 to 20 hours to remove the solid lead sulfate in the battery after crystallization.