The repair process begins with a thorough cell inspection and testing. As battery cells are the essential components of any lithium battery pack, it is important to ensure they are in good condition before continuing with the repair. The first step is to conduct a voltage test on each individual cell.
In order to repair a lithium battery pack, soldering techniques must be correctly implemented. The most important tools for this task are a soldering iron, desoldering pump, solder paste and flux remover. These four components combined with heat shrink tubing will allow the technician to effectively mend any loose connections or exposed wires.
Find the group or groups that have a lower voltage than the rest of the cells and remove it from the pack. After that, those cells just need to be replaced. We hope this article helped you learn everything you needed to know about how to identify and fix a broken battery.
If a relatively new pack has only one defective cell and a replacement is located, exchanging the affected cell makes sense. With an aged battery, however, it’s best to replace all cells. Mixing new with old causes a cell mismatch that has a short life. In a well-matched battery pack all cells have similar capacities.
If you suspect that your lithium battery is failing, it's best to replace it rather than continue to use it, as a failing battery can pose a safety risk. How Much Does It Cost To Repair A Lithium Battery Pack?
Do not mix cells of different chemistry, age or capacity. Never charge or discharge Li-ion batteries unattended without a working protection circuit. Each cell must be monitored individually with a protection circuit. Include a temperature sensor that disrupts the current should the pack get hot.