1, vikt

In terms of the voltage of each cell, NiMH and NiCd are 1.2V, while Li-ion batteries are indeed 3.6V, and the voltage of Li-ion batteries is three times that of the other two. And the weight of the same type of battery lithium-ion batteries and nickel-cadmium batteries are almost equal, while nickel nickel-metal hydride batteries are heavier. It can be seen that the weight of each battery itself is different, but lithium-ion batteries because of the high voltage of 3.6V, the number of individual battery combinations in the case of the same voltage output can be reduced by one-third and the weight and volume of the formed battery reduced.

2.the memory effect

NiMH batteries have the same memory effect as NiCd batteries. Therefore, regular discharge management is also necessary. This regular discharge management is handled in a vague state, and even some are discharged under incorrect knowledge (each discharge or discharge after several uses varies from company to company) This tedious discharge management cannot be prevented when using NiMH batteries. In contrast, lithium-ion batteries are very convenient and easy to use because they have no memory effect at all. It does not have to pay attention to the residual voltage how much, directly rechargeable, charging time can naturally be shortened.

3.self-discharge rate

NiCd battery is 15-30% (month) NiMH battery is 25 ~ 35% (month), lithium-ion battery is 2 ~ 5% (month). The self-discharge rate of the above NiMH battery is the largest, while the specialty of lithium-ion battery has a very low discharge rate compared with the other two types of batteries.

4.charging method

NiMH batteries and lithium-ion batteries can not withstand overcharging. Therefore, NiMH batteries with constant current charging PICKCUT control mode in the charging voltage reaches the maximum, stop continue charging as the best charging method. Lithium-ion batteries are best charged with constant current and voltage, and NiMH and Li-ion batteries are best charged with the charger-DV control method for NiCd batteries.

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