Differences in quality nickel-cadmium alkaline batteries, as well as in peacetime improper use or poor maintenance, often appear alone nickel-cadmium alkaline battery reverse polarity phenomenon. The so-called reverse polarity phenomenon. The battery is in use during the series, ahead of a nickel-cadmium alkaline batteries are aging, the capacity to reduce, or even complete loss of capacity in the discharge process, especially in the closing under the impact of current. This voltage nickel-cadmium alkaline batteries may soon drop to a few tenths of volts, in which case due to its terminal voltage is lower than the normal battery charging voltage is reversed, so that it is positive or negative polarity reversal, which is anti- extreme phenomenon. Reverse polarity phenomenon occurs, so that the battery pack is not only lost the series to the battery voltage of 1.2V, but also increase the counter voltage of 2V, the battery pack voltage is reduced by about 2.4V, which will seriously affect the use of the entire battery pack effect. If it is found a battery polarity reversal phenomenon has occurred, with the beginning of the normal charging current and the normal charging time is often can not be charged to its rated capacity, at this time that it shall be the overcharge, so that anti-polar polarity of the battery is corrected. So that the subsequent normal charging current, so that before chemical reactivity and vitality is restored, this approach is often referred to as battery "active treatment." For more information, please click http://www.hndhdq.com.cn/ ----------- zhongqi