How to repair the damaged Ni-MH rechargeable battery?

How to repair the Ni-MH rechargeable battery is broken? The first simple method to repair the Ni-MH rechargeable battery is to let the rechargeable battery be frozen in the household refrigerator for a few days after being used for a few days. Method: First use news paper to absorb moisture and put the battery in a layer, then wrap it with plastic tape (waterproof and moisture-proof), then put it in a household refrigerator and freeze for three days. Take out the rechargeable battery and place it at room temperature for three days. It can repair 90% of the electric capacity with slow charging. The second simple and clear repair method: (This method is reproduced from a technical professional physics teacher, and chooses the nickel-metal hydride rechargeable battery in a digital camera as an example) In the industry market, there are mostly 183,000 MAH Ni-MH rechargeable batteries. Under normal circumstances, most of what everyone buys is 2,000 2600MAH Ni-MH rechargeable batteries. According to this specification, the design concept has the following points: take a section of enameled copper core wire with a length of 2.6 meters and a diameter of 0.4 mm, and make a paper tube with a diameter of less than 1 cm (the best choice is hollow, which is more conducive to heat conduction). Then wind the thread around the paper tube. Leave both sides aside and fix it in place. Therefore, the preparatory work is over. (Concise and clear) Here is a point: According to recent reports, the correct charging of Ni-MH rechargeable batteries should be high-current fast charging! Traditional slow charging is only bad for rechargeable batteries (overcharge)! So everyone must buy one There is a fast charging charger. The best option is the one with the charging indicator. In this case, it is more expensive. But there is a direct determinant of the service life of rechargeable batteries. Repair: Only one section can be repaired once. Report directly to the camera: Please replace the Ni-MH rechargeable battery of the battery and connect the two ends of the coil. Let it discharge. At this time, the current can reach 1.52.0A. It lasts for 10 minutes for the first time (note: the heating of the coil is normal, and it is being discharged with a large current). Then put it into the fast charger to see if it can be charged. If it still fails to charge, put the phone back in the same way. This time the time period does not need to exceed 8 minutes. The third time does not need to exceed five minutes. Normally, after the first discharge, it can be charged. Note: The above data is for 2100MAH rechargeable batteries. If it is a 1000MAH rechargeable battery, please halve the discharge time. If it is 3,000 MAH, the time will be increased by half. If after 4 discharges, it cannot be charged in the fast charger. Generally speaking, this Ni-MH rechargeable battery is useless. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the maintenance tips for lithium batteries?