Introduction of the initial charging method of Ni-Mh battery

The memory effect of Ni-Mh battery

Nickel metal hydride batteries and nickel-cadmium battery has a memory effect, but far less than the nickel cadmium battery.So there is no need to charge every time for discharge operation (because of improper operation will damage the battery), only three months one time charge and discharge completely to alleviate memory effect.

This self-discharge rate of Ni-Mh batteries

Nickel metal hydride batteries for 25 ~ 35% (month), nickel cadmium battery for 15 ~ 30% (month),The lithium battery for 2 ~ 5% (month).Nickel metal hydride battery self-discharge rate is maximum, and lithium battery compared with other two kinds of battery discharge rate is extremely low.

C. nickel metal hydride battery charging mode

Hydride and lithium-ion batteries are not capable of charging.Therefore, nickel metal hydride batteries with constant current charging PICKCUT control mode in the charging voltage reaches the highest, stop charging for the best way.While the lithium battery using constant current, constant voltage charging is best, if the nickel cadmium battery charger - DV control way of the hydride and lithium-ion batteries will cause the influence of service life.

Nickel metal hydride battery charging method is introduced for the first time

_____ the Ni-Mh battery capacity is higher, the better

Different types of batteries, the higher the capacity, use the longer.Regardless of the volume and weight factors, of course, the higher capacity, the better.

But the same battery model, with the same nominal capacity (600 mAh, for example), actual measurement of the initial capacity is different: for example, a 660 mAh, the other one is 605 mAh, then 660 mAh is better than 605 mAh?

Actual situation may be because the electrode materials of high capacity of more than the increase of the initial capacity, and reduce the electrode is stable, the result is recycled after dozens of times, high capacity battery capacity failure quickly, and the low battery capacity is still strong.Many domestic batteries manufacturers often in this way to obtain the high capacity battery.And users to use half a year after the standby time is so poor.

Civil the AA Ni-Mh batteries battery (5), generally is 1400 mAh, but also has a high capacity (1600 mAh), reason is the same.

Improve capacity cost is the cycle of life, manufacturers are not in the battery material modification and articles, it is impossible to truly "improve" battery capacity.

Nickel metal hydride battery charging method

Science of charging method can extend the service life of Ni-Mh batteries.

(1) in general, new Ni-Mh batteries only a few, buy after the first charge before use.

But if the battery factory time short, electricity, recommend to use recharging.New Ni-Mh batteries typically after 3-4 times of charging and use, to play to the best performance.

(2) the memory effect of Ni-Mh batteries, though small, it is better to recharging after each use, and is a one-off, do not charge in a while and then filling in a minute.The important thing is this "longevity".

(3) when charging, pay attention to the heat around the charger.When not to keep the battery clean, especially at the ends of the contact, when it is necessary to use soft dry cloth graze.Long time not to take out the battery from the battery, put in dry environment.

(4) nickel metal hydride battery deposit in a few months later, will enter a state of "dormancy", the battery life is greatly reduced.If the Ni-Mh batteries have been placed for a long time, suggest that it is advisable to use slow charger to charge first.Generally Ni-Mh battery before charging, the voltage is below 1.2 V, full of the normal voltage at around 1.4 V.So it can be judged whether the battery is fully charged.

1, nickel metal hydride battery memory effect is very small, can be neglected.

2, nickel metal hydride battery cycle life of the national standard 500 times (80% DOD)

3, nickel metal hydride battery storage time more than 10 years, there is no problem, it is best to store charge.

4, full charge full discharge way of charging, serious shorten the Ni-Mh battery life.

5, and a mismatch of the charger, may cause the battery overcharge, shorten the battery life.

6, use Ni-Mh batteries, be careful not to over discharge, or seriously affect the life.

7, the group used Ni-Mh batteries, more attention should be paid to overcharge discharge of the battery.

Eight, take a pale imitation of usage, life can be increased several times.From the # Amy fruit electronics

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