1. Lithium battery uses carbon material (graphite) as negative electrode and lithium containing compound as positive electrode;
2. The positive electrode of nickel cadmium battery is composed of nickel oxide powder and graphite powder, and the negative electrode is composed of cadmium oxide powder and iron oxide powder.
2、 Different charging and discharging characteristics:
1. The lithium battery has strict control over the charging and discharging current, which should not be too large, and the voltage gradually decreases and changes greatly during discharge, but the lithium battery has high charging efficiency and no memory effect;
2. Nickel cadmium battery can charge rapidly with large current and provide large current for load, and the voltage change during discharge is very small, but its charging efficiency is low and the memory effect is serious;
3、 Different single section voltage:
1. The single section voltage of lithium battery is 3.6V or 3.7V.
2. Single nickel cadmium battery 1.2V;
4、 Different durability characteristics:
1. The lithium battery is delicate, and over discharge or over charging will cause permanent damage, so it needs to install a protective circuit board, and it needs to be charged and discharged for maintenance every half a year or so;
2. The nickel cadmium battery can withstand overcharge or over discharge. It is simple and convenient to operate. It will not degrade its performance after a long time of storage. After charging, it can restore its original characteristics;
5、 Different electric volume ratio:
The capacity of lithium battery is relatively high, and the same weight and volume can store more power than nickel cadmium battery;
