Maintenance and use of Ni-MH batteries

(1) New-type nickel-metal hydride batteries generally only contain a small amount of electricity, and should be charged before use after purchase. However, if the factory life of the battery is short and fully charged, it is recommended to use it first and then charge it. (2) New Ni-MH batteries generally have to be charged and used 3-4 times, and their performance can be maximized. Many friends have encountered minor problems with the first charge, for example, the number of films after the first charge is not as expected. many. After 3-4 charging and using, everything is solved. (3) Although the memory effect of Ni-MH battery is very small, it is recommended to charge as much as possible after each use, and it is a one-time charge. If you don't charge it temporarily, you need to use it for a while before charging. This is an important part of longevity. (4) Pay attention to the heat dissipation around the charger when charging. There is no need to blow it deliberately with a fan. Ordinary users often do not have a special battery storage bag when using the battery; after replacing the battery, the user will habitually put the battery away, regardless of whether the place is clean or humid. The result is that the battery is easily dirty and the contacts are easily metalized. For example, contacts such as keys are easy to get wet, and these are the enemies of batteries. Suggestion: The user should set a special battery placement point to keep the battery clean. In order to prevent power loss and other problems, please keep the contact points on both ends of the battery and the inside of the battery cover clean. If necessary, pat it gently with a soft, clean, dry cloth. (5) When not in use for a long time, remember to remove the battery from the battery box and place it in a dry environment. It is recommended to put it in the battery box to prevent short circuit of the battery. (6) Ni-MH batteries that have not been used for a long time will be stored for several months, and the batteries will naturally enter a dormant state, and the battery life will be greatly reduced. If the Ni-MH battery has been stored for a long time, it is recommended that you first charge it at a slow speed. Because: According to tests, the best storage condition for Ni-MH batteries is about 80% of the charging capacity. This is because the self-discharge of NiMH batteries is relatively large (about 10%-15% per month). If the battery is stored after being fully discharged and not used for a long time, the self-discharge of the battery will cause the battery to over-discharge and cause damage to the battery. Don't believe it? If you think about the new Ni-MH rechargeable battery is still fully charged, this is the reason. Suggestion: Compare more, correct wrong views, and start maintaining the battery from the right direction, otherwise it will be counterproductive. (7) Emission of nickel hydrogen. Expert advice. Try not to discharge as much as possible. Over-discharge will cause charging failure. The harm of doing so is far greater than the memory effect of the Ni-MH battery itself. (8) The multimeter self-checks whether the battery is fully charged. Under normal circumstances, the voltage of the Ni-MH battery before charging is lower than 1.2v, and the normal voltage after charging is about 1.4v. It is easy to judge the state of the battery. (9) The charger is mainly divided into fast charging and slow charging. The slow charging current is very small, usually around 200mA. For example, our commonly used charging current is about 160mA. The charging time is long, about 16 hours of charging for a 1800 mAh Ni-MH battery. The time is slow, but the charging will be full without harming the battery. The fast charging cycle is generally above 400mA, and the charging time is significantly shortened, which can be completed in 3-4 hours, which has also won everyone's favor. Quickly charge a variety of different prices. So we often have this question, why is the price difference so big when using fast charging? Good chargers, especially fast charging chargers, have an overcharge protection function. For example, our common Panasonic Super Charger BQ390 performs particularly well in this regard. Excellent chip software design capabilities minimize the damage to the battery caused by fast charging during battery charging. (10) Contradictions occur. Slow charging does not damage the battery, but the charging time is too long; fast charging can save time, but damage to the battery, even the best Panasonic battery charger BQ390 can only reduce the damage level, but cannot completely prevent it. The solution is to buy fast charging and slow charging. Fast charge for a period of time, such as 5 to 10 times, and then switch to slow charge once or twice. This restores the battery to its best performance. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Are lithium-ion batteries green and pollution-free?