The technical means for the repair and maintenance of lithium battery packs mainly include the following:

Temperature treatment method

Placing lithium batteries in a low-temperature environment, such as the freezer compartment of a refrigerator, can slow down the chemical reactions inside the batteries and reduce leakage. This may have some effect on cases where battery leakage leads to a decline in battery life. However, excessive low temperatures may cause irreversible damage to the battery. Therefore, when using this method, one should be cautious and strictly control the temperature and time. When performing the specific operation, you can firmly wrap the old lithium battery that will automatically shut down with cling film. Try to wrap it tightly, with a total of three layers inside and outside, to ensure that the battery is in a vacuum state. Then, wrap three layers of newspapers outside the cling film to completely seal the lithium battery. Put it in the freezer of the refrigerator. After 48 hours, take out the battery, remove the paper film wrapped around it, let it cool for a while, and then charge it.

Deep discharge method

By connecting the battery to a low-voltage small light bulb to deplete the internal power of the battery and then charging it, a deeper charging effect can be achieved. This method helps activate the chemical substances inside the battery, enhancing its capacity and performance. However, over-discharging may also cause damage to the battery. Make sure the battery is not over-discharged during operation.

Clean the contact points

The metal contact points of the battery are prone to oxidation or dirt, resulting in poor contact and affecting battery performance. These contact points can be cleaned with an eraser or other cleaning tools to ensure good contact between the battery and the device, thereby improving the battery's working efficiency.

Overcharging and overdischarging method

Thoroughly discharging the battery and then recharging it can help activate the battery. However, this method should be used with caution, as both over-discharging and over-charging may have negative effects on the battery.

Hydration and repair

If the battery loses too much water, an electrolyte can be injected into the battery with a syringe. However, this method requires certain skills and experience, and not all batteries are suitable for water replenishment and repair.

Selection and reconfiguration of faulty batteries

By detecting the voltage of each battery in the battery pack, the damaged batteries are picked out and reassembled. This method is somewhat helpful for improving the overall performance of the battery pack, but it requires professional equipment and knowledge.

Eliminate vulcanization reaction

Using a professional repair instrument to remove lead sulfate from battery crystals can enhance the battery's durability.