What are the differences between Ni-MH batteries and lithium-ion batteries

1. The cell voltage is different. The voltage of a lithium-ion battery is 3.7-4.2V, and the voltage of a nickel-hydrogen battery is only 1.2V. The capacitance of a lithium-ion battery is equivalent to three nickel-hydrogen batteries in series. 2. Different charging speeds. Due to the active performance of lithium and the faster moving speed inside the battery, the charging current is larger and the charging speed is faster. A lithium ion battery can be fully charged in about 3 hours; while the charging speed of Ni-MH battery is very slow, and it takes about 1 day. 3. The energy density is different. The energy density of lithium ion batteries is high. Now the energy density of lithium batteries for electric vehicles has reached above 160Wh/kg; the energy density of nickel-hydrogen batteries is low, only 40-70wh/kg. Therefore, in the same volume, lithium-ion batteries have a larger capacity than nickel-hydrogen batteries. 4. The memory effect is different. Lithium-ion batteries have no memory effect and can be charged as you use them; Ni-MH batteries have a certain memory effect, so you should try to charge them as much as possible during normal use, so as not to affect the battery capacity. 5. The self-discharge phenomenon is different. Although compared with nickel-cadmium batteries, the self-discharge of nickel-metal hydride batteries is not large, but compared with the almost negligible self-discharge of lithium-ion batteries, nickel-metal hydride batteries are simply the king of discharge. 6. The price is different. Lithium-ion batteries are expensive, and Ni-MH batteries are cheap. 7. Relatively speaking, the volume of lithium-ion batteries is larger than that of nickel-hydrogen batteries, but this is relatively speaking, because the capacity of lithium-ion batteries of the same volume is higher than that of nickel-hydrogen batteries, so lithium-ion batteries The battery is relatively small in size, lighter in weight, and convenient to carry. 8. Application areas With the popularity of computers and mobile phones, there is an increasing demand for mobile phone batteries in the market, especially for mobile phone lithium-ion batteries. In addition to the digital electronics industry, lithium-ion batteries are also widely used. Used in new energy vehicles, communication base stations and other places. Ni-MH batteries are generally used in electrical equipment, lamps, and electronic toys industries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.