In recent years, the application of cordless electric tools is more and more widely. More and more new types of cordless electric tools appear on the market, including the cordless drill. If you want to give full play to the performance of the cordless drill, it is very important to choose a suitable cordless tool battery, which means that you should learn as much as possible about the design, performance, specifications and characteristics of the battery. This article will introduce several cordless tool batteries to provide enough information for buyers.
What is the best battery for cordless drill
At present, the cordless drill mainly uses three kinds of batteries, which are nickel cadmium battery, Nickle metal hydride battery and lithium ion battery. In order to give consumers more reference information, the article will list and analyze the advantages and disadvantages of these three batteries：
Nickel cadmium battery (NiCad): NiCad battery is the oldest of those three batteries. It is still widely used because of its durability, low price and long cycle life.
1.NiCad battery has high resistance to high temperature and shock.
2.NiCad battery has a long cycle life of about 1000 cycles.
3.NiCad battery can deliver strong current.
4.NiCad batteries are highly resistant to overcharging (but we still do not recommend storing them in a charged state).
5.Compared with other rechargeable batteries, NiCad batteries are
1.The density of NiCad battery is higher, and its weight is generally larger than the other two batteries.
2.The capacity of NiCad battery is low.
3.NiCad battery has a strong memory effect and high self discharge rate, improper charging will lose the battery capacity and cycle life.
4.Cadmium in NiCad batteries is very harmful to the environment,and must be treated properly.
Nickel metal hydride battery (NiMH): NiMH battery can be said to be an improved version of NiCad battery. It has better discharge performance and environmental friendliness. It also inherits the low-cost characteristics of NiCad battery (although its cost is higher than that of NiCad battery).
1. NiMH batteries are lighter than NiCad batteries.
2.The energy density of NiMH battery is higher than that of NiCad battery, and its discharge time is 2-3 times longer than that of NiCad battery.
3.The memory effect of NiMH battery is weaker than that of NiCad battery.
4.As long as the battery is charged and stored properly, the capacity and cycle life of the battery can be protected.
5.NiMH battery has no pollution to the environment.
1. NiMH batteries are extremely sensitive to temperature, especially low temperature, and should only be stored or used at temperatures between about 33°F and 103°F.
2.Deep discharge and long-term idle will damage the NiMH battery, which will lose the capacity and cycle life of the battery.
3.The cost of NiMH battery is higher than that of NiCad battery.
4.NiMH battery has a high self discharge rate
Lithium ion battery (Li ion)：Lithium battery technology is currently the most rapid development of battery technology. Lithium battery replacement frequency is very high, which also makes its advantages more and more obvious.
1.Li ion battery is the lightest of those three rechargeable batteries.
2.Li ion battery has high energy density and good discharge performance.
3.Compared with NiMH battery. Li ion battery has good performance in high temperature and low temperature.
4.Li ion battery has a fast charging rate and flexible charging mode (it
can continue to use without fully charging).
5.Lithium ion battery has no memory effect and its self discharge rate
6.Li ion battery has no pollution to the environment.
1.Li ion battery has poor resistance to overheating, overcharge and over discharge, which is easy to damage the battery due to these conditions (most lithium batteries are now equipped with protection plates, which can effectively prevent overheating, overcharge and over discharge).
2.Li ion battery is the most expensive battery of those three batteries.
By analyzing the advantages and disadvantages of the three batteries mentioned above, it is not difficult to find that lithium-ion batteries are superior to the first two in terms of performance and practicability, and its only major disadvantage is its high price. However, with the rapid development of lithium battery technology, the cost and price of lithium-ion battery are also gradually decreasing. It can be said that lithium-ion battery is gradually becoming the best choice for cordless drill battery.
What is the best voltage for a cordless drill
The use of cordless drill has certain requirements for voltage, which usually requires multiple batteries in series to provide enough voltage for the drill, because the voltage determines how much energy a battery can provide in a limited time. It's worth noting that the voltage of a NiCad battery is about 1.2V, that of a NiMH battery is about 1.4V to 1.6V, but the voltage of a lithium-ion battery is about 3.6v-4.2v. This means that if you choose a lithium-ion battery, you can put in fewer batteries to get a fully charged voltage.
Talking about the demand of cordless power tools for voltage, the demand of cordless power tools for voltage is divided into three grades. One is light work, which only needs 7V to 15V, and the other is medium duty, which needs 12V to 18V. The last one is heavy duty, which requires a high voltage of 18V to 36V. For the cordless drill, the voltage from 4V to 8V is enough to support the normal use of a light-duty cordless screwdriver, and 12V to 18V can meet the needs of most cordless drill users. But some heavy duty drills need 18 V to 24 V to drive. All in all, choosing 18 V batteries for your cordless drill is the most reliable.
How do you buy the best 18 volt lithium battery for drill
If you want to buy 18V lithium-ion batteries for your cordless drill, there are several details you should pay attention to:
· brand：Choosing famous brands of lithium-ion batteries can effectively guarantee the quality and safety of your batteries. These well-known brand manufacturers will also give you high-quality after-sales service, which can not only provide convenience for you to use the battery, but also facilitate your battery to return to the factory for repair after problems.
·Battery protection board：The protection board of lithium-ion battery is an independent protection circuit, which can effectively prevent the battery from overcharge and over discharge. Now most manufacturers will add protection board to their lithium-ion batteries to improve the reliability of the batteries. However, there are also some unscrupulous businessmen who are lured by interests, and they will ignore the steps of adding protective board for batteries in order to save costs. In order to use the battery safely, please purchase the battery with protection board.
·Lithium ion chargers: It takes about one to three hours to charge a lithium battery. You should choose a good charger according to this. Be careful to buy so-called fast chargers, which tend to charge only about 70% of the capacity of the battery, and they can adversely affect the long-term discharge performance of the battery. It is very important whether the charger has heat dissipation function, which can ensure that your battery is safe enough when charging. Generally speaking, the charger supplied by the manufacturer is the best choice, but if you choose a charger with sensors and electronic components, you can better meet the charging needs of different types of lithium-ion batteries.
Hope you can find this article useful.
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