1. The difference in volume size
Relatively speaking, the volume of lithium batteries is larger than that of Ni-MH rechargeable batteries, but it is "relatively speaking". Because the volume of the same volume lithium battery is higher than that of the Ni-MH rechargeable battery, the lithium battery is relatively small, lighter, and convenient to carry. It is especially suitable for various new mobile terminals, such as mobile phones, computers, and PDAs.
2. With or without memory effect
The memory effect of the Ni-MH battery is obvious. Human memory is the impression left in the brain. The same is true for nickel-metal hydride batteries. Incomplete discharge or unsatisfactory charging will cause the battery to remember only the incomplete and unsatisfied state over time. The application performance is capacity degradation. The lithium battery does not have this feature. Therefore, Ni-MH batteries must be thoroughly discharged every time to clear the memory left behind, which is similar to brainwashing people. Lithium batteries can be charged and used at any time. In addition, the lithium battery life rate of lithium batteries is very low, so the power consumption stored in the rechargeable battery can always be maintained.
3, how much power
There are many differences between Ni-MH rechargeable batteries and lithium batteries, and power storage is a level. Customers are concerned about battery capacity extensively. Compared with nickel-hydrogen rechargeable batteries, lithium batteries have a greater energy density, that is, under the same volume, rechargeable batteries include a lot of output power than nickel-hydrogen rechargeable batteries. Therefore, the rechargeable batteries used in automatic phones like everyone are generally all lithium batteries, which are lighter in weight and small in size, so a certain volume can be considered.
4, the self-discharge effect of lithium batteries
To put it plainly, the life of a lithium battery is the functional loss of the rechargeable battery when it is not in use, that is, the ability of the rechargeable battery to maintain power consumption. The greater the useful life of the lithium battery, the shorter the service life of the rechargeable battery. If the lithium battery life rate of the rechargeable battery is too high for a series of reasons, it is likely to reduce its service life immediately. Lithium batteries and Ni-MH rechargeable batteries have different lithium battery life rates. Although their lithium battery life is not obvious, the latter type of lithium battery life is common. Due to the different natural stone materials used, lithium batteries have great advantages in maintaining driving force. If you feel that the life of the lithium battery of the Ni-MH rechargeable battery is low, you can immediately ignore the life of the lithium battery. At a certain level, lithium batteries can be regarded as a new type of battery that is better than nickel-hydrogen rechargeable batteries, and can be used as a stronger commodity to replace nickel-hydrogen rechargeable batteries.
5, size
The use time of NiMH batteries in the sales market is significantly longer than that of lithium batteries. So far, there are many specifications and models of nickel-metal hydride batteries for customers to choose from, just like the "special-shaped nickel-metal hydride batteries" that everyone often hears, that is, nickel-metal hydride batteries of different specifications and models. However, because the main purpose of lithium batteries is more practical, the specifications of lithium batteries are also more practical.
6, The difference in use
With the popularization of computers and mobile phones, the sales market has more and more requirements for mobile phones, especially lithium batteries on mobile phones. In addition to the data electronics industry, lithium batteries are also widely used in new energy vehicles, mobile base stations, and other venues. Ni-MH batteries are generally used in the fields of electrical equipment, lighting fixtures, and electric toys.
7, The difference between charging methods
The voltage of a single lithium battery is 3.6V, and the voltage of a single nickel-hydrogen battery is 1.2V, the former is 3 times that of the latter. The charging method for lithium batteries is to set a termination voltage, usually 4.2V for a single cell, and there is no voltage rise or fall for Ni-MH batteries. The charging method of lithium batteries is called voltage limiting and current limiting (pressure refers to voltage and currently refers to the upper and lower limits of voltage and current) charging, while the voltage platform of Ni-MH battery is low and constant current (a constant current Current) charging. Due to the different charging methods, the lithium battery charger and the NiMH battery charger cannot be mixed.
The above seven points introduce the difference between nickel-metal hydride batteries and lithium batteries. In the field of high-current instantaneous discharge, nickel-metal hydride batteries are better than lithium batteries. These areas include medical equipment, emergency equipment, power tools, etc. In terms of larger applications, nickel-metal hydride batteries can also be used in new energy hybrid vehicles. Of course, research in this area still needs a breakthrough. When choosing, you must consider your own needs and choose a suitable rechargeable battery.
MANLY Battery Company, a professional manufacturer of lithium iron phosphate batteries, provides customized services for multi-series parallel lithium iron phosphate batteries/lithium iron phosphate power batteries. The products are widely used in electric bicycles, golf carts, electric wheelchairs, electric tools, electric toys, Solar batteries, emergency lights, solar street lights, UPS backup power supplies, and various instruments.
