What is the difference between Ni-MH battery and Li-ion battery

In terms of the voltage of each unit cell, both nickel-hydrogen and nickel-cadmium are 1.2V, while the lithium-ion battery is indeed 3.6V, and the voltage of the lithium-ion battery is three times that of the other two. Moreover, the weight of the same type of battery is almost the same as that of a lithium-ion battery and a nickel-cadmium battery, while a nickel-nickel-hydrogen battery is heavier. It can be seen that each battery has a different weight, but because of the 3.6V high voltage of the lithium-ion battery, the number of single battery combinations can be reduced by one-third at the same output voltage, which reduces the weight and volume of the formed battery. . 2. Memory effect Ni-MH batteries have the same memory effect as nickel-cadmium batteries. Therefore, regular discharge management is also necessary. This kind of regular discharge management is handled in a fuzzy state, and even some discharges are carried out under incorrect knowledge (each discharge or discharge after several times of use are different depending on the company) this cumbersome discharge management It cannot be prevented when using NiMH batteries. Relative to lithium-ion batteries, because they have no memory effect at all, they are very convenient and simple to use. It does not need to care about the residual voltage at all, it can be charged directly, and the charging time can naturally be shortened. 3. The self-discharge rate of nickel-cadmium batteries is 15-30% (month). Ni-MH battery is 25~35% (month), and Li-ion battery is 2~5% (month). The self-discharge rate of the above nickel-metal hydride batteries is the largest, while the characteristics of lithium-ion batteries are extremely low compared to the other two types of batteries. 4. Charging method Ni-MH batteries and lithium-ion batteries cannot withstand overcharging. Therefore, the PICKCUT control method of constant current charging of Ni-MH batteries is the best charging method to stop charging when the charging voltage reaches the highest. For lithium-ion batteries, it is best to use constant current and constant voltage charging methods. If the nickel-cadmium battery charger-DV control method is used for charging, the nickel-metal hydride batteries and lithium-ion batteries are charged. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Introduction to Gel Battery Repair