Nickel cadmium battery is composed of two plates, one is using nickel, another is the cadmium in batteries two metal occurs reversible reaction, battery recharging. Nickel cadmium is characteristic of “firm”, cheap price. Defect is for environmental pollution metal cadmium battery capacity, small, short life, so the battery is nickel cadmium battery, cheap, and every memory effects are charging and discharging charge shall be first.The battery is nickel cadmium battery replacement products, relative to the nickel cadmium battery, it is all the more remarkable nimh batteries. It greatly reduces the nickel cadmium in batteries “memory effects”, which makes use of nimh batteries more convenience, more long use life cycle (up to 1,000 times). In addition, still have the capacity nimh batteries, discharge, high resistance to overcharge depth and discharge, charging time short obvious advantages. The most important is no longer used nimh batteries toxic metal material, can eliminate the as pollution to the environment. At the same time, in the electrical characteristics and nickel cadmium battery basic similar, in actual applications can completely replace the nickel cadmium battery without the need for any modification of the camera? / P >
Of course, also not perfect nimh batteries, it also exist some disadvantages. It is poorer, high temperature characteristics in 45 degrees Celsius above and below 0 degrees under the environment of the cryogenic environment, will not work properly nimh batteries, even cannot start the camera, In addition, the battery is relatively high self-discharge, storage after period of time will find it’s power decrease, There is a nimh batteries exist mild memory effects.