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The difference between lithium battery, nickel cadmium battery and nickel hydrogen battery
- Dec 12, 2018 -

Nickel-cadmium batteries have low energy ratio, low voltage, memory effect, and great pollution to the environment. However, the high temperature resistance is good, the production requirements are relatively lower, and the price is cheap. The life is generally about 500 times of charge and discharge. If it is an emergency light, etc., it is not necessary to replace the battery for at least 4 years. Most of the razors, electric hair clippers and emergency lights in daily life use nickel-cadmium batteries.

Nickel-metal hydride battery is the next generation of rechargeable battery of nickel-cadmium. The energy ratio is higher than that of nickel-cadmium. The voltage is low, there is a slight memory effect, and it has certain pollution to the environment. The battery life is about 1000 times. Ni-MH batteries are used in the surrounding Ni-MH hybrid vehicles.

Lithium battery is the highest level of rechargeable batteries at present, but after 10 years of birth, the energy ratio per unit of material has only increased by 10%, and there has been no major breakthrough. The lithium battery has a relatively high energy ratio, high voltage (3.2V/3.7V), no memory effect, and no pollution. The price is higher. Battery life: Lithium iron phosphate (most of the electric cars) is more than 2,000 times. Lithium manganate (such as most 3C appliances) is about 500 times.