Does Ni-MH battery have a memory effect?

Ni-MH batteries have the same memory effect as Ni-Cd batteries. Therefore, regular discharge management is also necessary. This kind of periodic emission management is carried out in a vague state, and even some emissions are carried out under incorrect knowledge (the emission after each emission or multiple use is different from company to company). When using nickel-metal hydride batteries, this cumbersome discharge management is unavoidable. Lithium-ion batteries are relatively easy to use because they have no memory effect at all. It does not pay attention to the remaining voltage, it can be charged directly, and the charging time can naturally be shortened. Charging When fast charging, it can be charged on the microcomputer through the charger to prevent the battery from overcharging. Today's nickel-metal hydride batteries contain a catalyst that can eliminate the danger of overcharging in time. 2H2+O2 catalyst>2H2O, but this reaction is only effective in C/10 hours, starting from overcharge (Cu003dbattery capacity). As the charging process begins, the battery temperature will rise significantly. Some fast chargers (less than 1 hour) also include a fan to prevent the battery from overheating. Some manufacturers believe that a simple constant current (and low current) charger, with or without a timer, can safely charge Ni-MH batteries with a charging current of C/10h (the nominal capacity of the battery divided by 10 hours) . In fact, some low-cost wireless phone base stations and the cheapest battery chargers work this way. Although this may be safe, it will have a negative impact on battery life. According to Panasonic's Ni-MH battery charging guide (link at the bottom of the page), trickle charging (charging with a small current for a long time) for too long will cause damage to the battery; to prevent battery damage, the trickle charging current should be controlled at 0.033×C/ Between h and 0.05×C/h, the maximum charging time is 20 hours. Regarding the long-term maintenance of Ni-MH batteries, low-frequency pulse charging can keep the battery in good condition better than trickle charging. Newly purchased or long-term unused Ni-MH batteries require a period of time to activate rechargeable batteries. Therefore, some new Ni-MH batteries have to go through several charge and discharge cycles to reach their rated power. Be careful when discharging the battery when using it. For several batteries connected in series (such as the usual 4 AA batteries in digital cameras), it is very important to prevent the batteries from being completely discharged and causing reverse charging. This may cause irreparable damage to the battery. However, generally these devices (such as the aforementioned digital camera) can detect the series discharge voltage of the battery, and when it drops to a certain level, it will automatically shut down to protect the battery. A single battery does not have any of the above hazards, but will discharge until the voltage is zero. This has no harm to the battery. In fact, regular discharging and charging help maintain the capacity and quality of the battery. Nickel metal hydride batteries have a high self-discharge effect, about 30% or more per month. This is higher than the 20% monthly self-discharge rate of nickel-cadmium batteries. The more full the battery, the higher the self-discharge rate; when the power drops to a certain level, the self-discharge rate drops slightly. The temperature of the battery has a great influence on the self-discharge rate. Because of this, nickel-metal hydride (nimh) batteries that have not been used for a long time are best kept at 40% half full. Ni-MH battery (nimh) is a battery with low self-discharge effect. It was launched in 2005. The manufacturer claims that it can store 70% to 85% of the electricity after one year at a temperature of 20c, and can use standard nickel-hydrogen batteries. The charger is charging. Some nickel-metal hydride batteries with low self-discharge have better discharge characteristics than alkaline batteries or lithium-ion batteries at low temperatures. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.