Nickel-cadmium batteries are currently the main reusable power source for household electrical and radio equipment, as well as battery tools (excluding mobile phones, which mainly use lithium-ion batteries). Correct operating conditions, timely full charge and periodically repeated full discharge-charge cycles will allow such a battery to be used for a longer time.
It is necessary
Reversible pulse charger, automatic charger with full discharge function
Instructions
Step 1
The nickel-cadmium battery is the only battery type that requires a complete discharge for normal and long-term operation. In this type of batteries, the memory effect is pronounced, when, with constant partial discharge, the useful (effective) area of its electrodes decreases. That is, it seems to remember the periodically repeated lower level of the discharge, and, having discharged to this level, stops working. From this, the name of this effect appeared. For normal and long-term operation of such a battery, it must be constantly fully discharged. There are two main types of chargers for this.
Step 2
The reversible pulse charger cyclically repeats charge-discharge cycles with different durations. To use such a device, insert the battery into the device, then plug the device into AC power. After the end of the charging process (indicated by the indicator), disconnect the charger from the mains. Such a charger keeps the battery in good working order, but it is a complex and expensive device.
Step 3
An automatic charger with a full discharge function is more preferable, as it is less complicated, cheaper, available in cases that allow you to charge 2 or 4 batteries at the same time. Insert 2 or 4 batteries into this charger. Set the switch on the device body to the position that corresponds to the number of batteries to be charged. Plug in the device. A red indicator light will indicate that the charging process is in progress. To forcibly discharge the batteries, press the "Discharge" button. In this case, the indicator will light up yellow - the process of battery discharge is in progress. At the end of the discharge, the charger will automatically start charging the batteries. The end of the discharge-charge cycle will be indicated by a green indicator.
