Alkaline battery is divided into two kinds of rechargeable alkaline battery and non-rechargeable alkaline battery, such as before we used the old-fashioned flashlight alkaline dry battery is not rechargeable, but now due to the change of market application demand, now also have part of the alkaline battery can be charged, but here there are many technical problems, such as, large current charging, alkaline battery can be charged?

Alkaline batteries can be recharged 20 times at less than 0.1C, but this is different from the recharging process of secondary batteries. Under normal circumstances, they can only be charged with partial discharge and cannot be charged with the same deep discharge as a real rechargeable battery.

Alkaline battery charging is only part of the charge, generally referred to as regeneration, regeneration concept further explains the characteristics of alkaline battery charging: alkaline battery can charge? Yes, except that it is regenerative charging, as opposed to real charging of rechargeable batteries.

The limitation of regenerative charge and discharge and the short cycle life of alkaline battery make it uneconomical to regenerate alkaline battery. In order to ensure the successful regeneration of alkaline batteries, the following conditions must be achieved

Steps/Methods

1. Under the condition of moderate discharge rate, the initial capacity of the battery will be discharged up to 30%, and the discharge should not be lower than 0.8V, so that regeneration is possible. When the discharge capacity exceeds 30%, the presence of manganese dioxide prevents further regeneration. The capacity of 30% and discharge voltage of 0.8V need to use the appropriate equipment, but most consumers do not have these equipment. Can an alkaline battery be recharged in this situation for most ordinary consumers? It’s not a question of economics, it’s a question of conditions.

2, the user can buy a special charger to regenerate. If you use another charger, can alkaline batteries be charged? Safety risks are too big, under normal circumstances, nickel cadmium, nickel metal hydride battery charger can not be used to charge alkali manganese battery, because the charger charging current is too high, may lead to the battery internal gas, if the gas out of the safety valve, will leak. Further, if the safety valve is not useful, there may even be an explosion. This rarely happens if the mold is bad in production, but it can happen, especially if the battery is not used correctly.

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

4. The capacity of the battery will be reduced to 50% of the initial capacity after 20 cycles.

5, special equipment to more than three battery connection, if the capacity of the battery is inconsistent, there will be other problems after regeneration, which may lead to negative battery voltage if the regenerative battery and not used the battery together will be more dangerous. The reversal of the battery causes hydrogen to form inside the battery, potentially causing high pressure, leakage and even explosion. Can alkaline batteries be recharged without having all three of them in good agreement? Obviously not necessary.

Rechargeable alkaline zinc-manganese battery An improved alkaline zinc-manganese battery, or RAM, that can be recharged for reuse. The structure and manufacturing process of this kind of battery are basically the same as that of alkaline zinc-manganese battery.

In order to realize recharging, the battery has been improved on the basis of alkaline zinc-manganese battery: (1) Improve the positive electrode structure, improve the strength of the positive electrode ring or add additives such as adhesives to prevent the positive electrode swelling during charging and discharging; ② the reversibility of manganese dioxide can be improved by positive doping; ③ Control the amount of zinc in the negative electrode, and control manganese dioxide can only be discharged with 1 electron; (4) The isolation layer is improved to prevent the zinc dendrites from penetrating the isolation layer when the battery is charged.

To sum up, alkaline battery can be charged, or to see the alkaline battery itself manufacturing instructions, if the instructions say that can be charged, that can be charged, if it is not, that is not chargeable.