![]() Once you have done all of that, the final step is to check the cell’s resistance. ![]() We put together a list of the best capacity testers after trying them all. This step is crucial in determining the usefulness of the cells, as cells that fall below 90% of the original manufacturer capacity may not be capable of providing enough energy to be used in a practical application. Step 6: Capacity Testing - The next step in the process is to capacity test the cells and label them to ensure that they can store the correct amount of energy. Once you have determined that your cells don’t have any problems with self-discharge, you will be able to test them for capacity. 1v after one week of storage should be discarded. Any cells that show a voltage drop above. This will allow you to see if the cells are still capable of holding a charge over time. Step 5: Self-Discharge Test - Leave the charged cells sitting for a week or so. Now that the cell is fully charged, you can see if it has any self-discharge. This can indicate that the cell is damaged or has a manufacturing defect, and it is not safe to use. If any cells become abnormally warm during charging or do not hold their charge, they should be discarded. This step is crucial in determining the health of the cells and ensuring that they are capable of holding a charge. Step 4: Charging - After the cells have been cleaned, bring them to a full charge while monitoring their temperatures. After you clean the cells, it's time to charge them. A metal scrub brush is also extremely helpful. The cleaning process can be done using a solvent or a specialized cleaning solution, depending on the type of residue present. This will reduce any added contact resistance and prevent any contamination from affecting the performance of the cells. Step 3: Cleaning - The next step in the process is to clean the cells of any glue, paper, or tape that was used to hold the battery pack together. Not all marks and discolorations are signs of damage, as you may be able to just clean them off. Any cells that show signs of damage, such as cracks, dents, or leaks, should be discarded immediately. This step is crucial in ensuring that the cells are safe to use. Step 2: Visual Inspection - After the cells have been removed from the battery pack, they undergo a visual inspection to ensure they are not physically damaged and show no signs of leaks. Once the cells are removed, they can then be visually inspected to determine their condition. This is typically done by using tools like pliers or wire cutters to carefully take apart the battery pack and remove the cells. Step 1: Salvaging - To begin the process of salvaging lithium-ion cells, the battery pack must first be removed from its original casing. If you are looking for a more in-depth overview of what each step looks like, visit the bottom of the article. If you want a quick overview of what the process looks like, these 7 steps are on how to test and grade cells. ![]() A Quick Overview of The Lithium Health Testing Process Testing cells is one of the most important steps in preparing salvaged 18650 cells for reuse. If you want to know how to test 18650 cells, you are in the right place.
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