Can alkaline batteries be charged?

From a perspective of economic, many people hope alkaline battery can be reused, it couldn’t be better if so. However, can alkaline battery be charged? Because alkaline battery is regarded as primary cell, is a one-off battery, in this sense, can alkaline battery be charged?

The answer is yes, alkaline battery can be charged, but there are many technical problems, for example, in condition of large current charging, can alkaline battery be charged?

Under the condition of charging less than 0.1 C, alkaline battery rechargeable 20 times, but this is different from the secondary battery charging process. Under normal circumstances, they can only charge under the partial discharge could not like real rechargeable battery charge after that depth of discharge.

Alkaline batteries only partially charged, generally referred to as "renewable" will be this way, "renewable" concept to explain the alkaline battery charging characteristics: alkaline batteries can be charged? Yes, but it is renewable charging, is different from the real charging rechargeable battery.

Regeneration of the charge and discharge limitations and short cycle life determines the regeneration of the alkaline battery is not economic. In order to guarantee the success of the alkaline batteries renewable, must meet the following conditions:

1. In the case of the discharge rate is moderate initial capacity of the battery discharge up to 30%, at the same time discharge should not be less than 0.8 V, regeneration is possible. When the discharge capacity of more than 30%, the manganese dioxide prevented further regeneration. Capacity of 30% and discharge voltage of 0.8 V to use proper equipment to, but most consumers have not the equipment. In this case, most ordinary consumers can alkaline battery charging? This is not an economic problem, but the conditions of the problem.

2. User can purchase a dedicated charger to the regeneration. If use other charger, alkaline batteries can charge? Security risk is too big, usually, nickel cadmium, nickel metal hydride battery chargers cannot be used for alkaline manganese battery, because this kind of charger charging current is too high, may cause the battery internally generated gas, gas out of the relief valve, leakage. Further, again if the relief valve lose effect, even an explosion. As in the production of mould bad this situation is rare, but it will happen, especially not the correct use of battery.

3. The regeneration time (about 12 hours) is beyond the discharge time (about 1 hour).

4. 20 after one cycle of battery capacity will drop to 50% of the initial capacity.

5. Special equipment are in need of more than three battery connection, if the battery capacity is not consistent, regeneration and then there will be other problems, which may lead to the battery voltage into a negative value if the regeneration of the cells and did not use the battery in use will be more dangerous. Battery reverse hydrogen produced inside the battery, risk of high pressure, lead to leakage and explosion. In three battery cases do not have good consistency at the same time, alkaline batteries can charge? Apparently unnecessary.

Such a long-time recycling of disposable battery is not only not cost-efficient, but also risky. If so, “can alkaline battery be charged" is not a technical problem. In order to avoid danger, it is better to use a new disposable battery or secondary battery (storage battery) than using recycled disposable battery.

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