The difference between nickel-metal hydride battery and lithium battery

August 23, 2022

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Guide: Lithium battery and NiMH battery are very familiar to everyone. The following is a brief introduction to the difference between NiMH battery and lithium battery . Interested children's shoes are coming to see it~~~ These two batteries are very helpful~~~

1. The difference between nickel-metal hydride battery and lithium battery - introduction

NiMH batteries

Nickel-metal hydride batteries are synthesized with hydrogen ions and metallic nickel. The electricity reserve is 30% more than that of nickel-cadmium batteries. It is lighter than nickel-cadmium batteries, has a longer service life, and has no pollution to the environment and no memory effect. The disadvantage of nickel-metal hydride batteries is that the price of nickel-cadmium batteries is much more expensive and the performance is worse than that of lithium batteries.

lithium battery

A lithium battery is a type of battery in which a lithium metal or a lithium alloy is used as a negative electrode material and a nonaqueous electrolyte solution is used by Edison. The reaction equation for battery operation is: Li + MnO2 = LiMnO2 The reaction is a redox reaction and discharge. In the past, lithium batteries have not been used for a long time because the chemical properties of lithium metal are very active, and the requirements for processing, storage, and use are very high. With the development of modern science, lithium batteries have now become mainstream.

2. The difference between nickel-metal hydride battery and lithium battery - volume

Rechargeable lithium battery is widely used in many new mobile devices because it has the advantages of small size (relative), light weight, low self-discharge rate and no memory effect compared with ordinary nickel-cadmium/nickel-hydrogen batteries. The batteries of mobile devices such as mobile phones, laptops, and PDAs that we usually use have gradually been replaced by lithium batteries. The memory effect of nickel-metal hydride batteries is not very obvious. One thing is that when it is urgently used, it is not necessary to recharge after photoelectric discharge. It is best to use it after illuminating.

3. The difference between nickel-metal hydride battery and lithium battery - power

The lithium battery has a large specific energy and a small battery; the voltage of a single lithium battery is three times that of a nickel-hydrogen battery; there is no memory effect, and it can be used as needed. But you can't use it to charge it, so the number of times of charging and discharging is too much, which affects the battery life. Lithium batteries should not be stored for a long time, and some of them will be permanently lost for a long time. It is best to store it in a freezer in the refrigerator after charging 40%.

4. The difference between nickel-metal hydride battery and lithium battery - charging method

Lithium battery charging requirements are different from nickel-cadmium/nickel-hydrogen batteries. The rechargeable lithium battery cell voltage is 3.6V (some battery blocks may be nominally 3.7V). With the full charge, the lithium battery voltage will rise slowly, which is also a sign to judge whether the lithium battery is full. The general manufacturer recommends stopping the charging voltage to 4.2V (in the case of a single-cell lithium battery). Lithium battery charging is generally limited by current limiting method. If a friend wants to charge the lithium battery independently, it should be noted that the charging method is different from the constant current charging method used in NiCd/NiMH batteries. Charger for nickel-cadmium/nickel-metal hydride batteries.