There are many types of lithium batteries for power tools, so the price of lithium batteries for power tools will vary greatly.
Power tool battery made of ordinary lithium ion battery
If the power tool batteries are made of ordinary lithium ion batteries, they must meet the high-speed discharge performance to meet the working requirements of power tools. However, due to cost and material limitations, ordinary lithium ion batteries cannot perform high rate discharge performance. Therefore, when people buy cheaper lithium power tool batteries on the market, they usually feel that they are fully charged and ready to use. However, after a while, it became clear that the power of the power tool was obviously weakened, softened, and lacked power. At the same time, ordinary lithium-ion batteries have general high temperature resistance, so the service life is relatively short.
Power tool battery made of nickel metal hydride battery
The energy density of a nickel-metal hydride battery as a power tool battery is not as high as that of a lithium battery. Therefore, in the same battery space, the capacity of the nickel-hydrogen battery is smaller than that of a lithium battery, but the consistency of the nickel-hydrogen battery is higher than that of a lithium battery. Therefore, the safety performance of nickel-metal hydride battery packs is better than that of lithium batteries. At the same time, the nickel-metal hydride battery can achieve a discharge capacity of more than 15%, which can fully meet the requirements of the working characteristics of electric tools. Of course, nickel-metal hydride batteries are heavier than lithium batteries, but they are cheaper than lithium batteries and more competitive in terms of manufacturing costs and market prices.
In addition, the low temperature performance of nickel-metal hydride batteries is much worse than that of low-temperature lithium iron phosphate batteries and low-temperature lithium polymer batteries. Therefore, nickel-metal hydride batteries are generally not suitable for power tool batteries in low temperature areas.
Power tool battery made of lithium iron phosphate battery
Lithium iron phosphate batteries have certain advantages as batteries for power tools. Its high temperature resistance is better than other lithium batteries. At the same time, the discharge performance above 30C can be achieved. The effect is ideal under normal temperature and wide temperature environment. Compared with nickel-metal hydride batteries, its low temperature performance and energy density are better, and its service life is longer than nickel-metal hydride batteries. NiMH batteries have a memory effect, but lithium iron phosphate batteries do not. At present, the technology of lithium iron phosphate batteries is somewhat inadequate compared with nickel-metal hydride batteries, the consistency of the batteries is relatively poor, and the safety of the battery pack is slightly worse than that of nickel-metal hydride batteries.
Lithium polymer power tool battery
Lithium polymer power tool battery
In the battery of power tools, the use of lithium polymer should be the most expensive. Lithium polymer not only has higher energy density, but also the best in achieving ultra-high rate discharge performance. The reason why lithium polymer is expensive is that it uses some rare materials with high energy density, and its production and manufacturing technology requirements are relatively high. The disadvantage is that its internal high-temperature performance is slightly worse than iron phosphate batteries, similar to nickel-metal hydride batteries.
The above is an introduction to the battery types of power tools. I believe that by comparing their advantages and disadvantages, everyone should have a preliminary understanding of which battery is more suitable for power tool batteries.
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