As a type of hand-held electric tools, electric drills are drilling tools powered by AC power or DC batteries. Among them, the lithium electric drill is a lithium battery-driven electric drill. The lithium battery is an ideal energy source. It has the advantages of large storage capacity, fast charging, and no memory effect, and has been widely used. There are many lithium electric drills on the market today. However, when choosing a lithium electric drill, you also need to master some correct methods to choose a lithium electric drill in order to choose a lithium electric drill that suits you.
First of all, when purchasing lithium electric drills, you should check whether there is a 3C mark. This is because electric drill products are compulsory certification products prescribed by the State Accreditation Administration. The general inspection method is to see if there is a 3C mark on the outer packaging of the tool or on the nameplate of the tool. You can also check the website of the CNCA to check whether the 3C certificate of the tool is currently valid.
Secondly, when purchasing lithium electric drills, you should choose a company with good reputation, strong strength and great influence, such as Dewei. After all, these big companies have strong technical strength, strict quality control and standard after-sales service.
Third, according to the needs of users, first distinguish between home use and professional use, because most electric drills are designed for professionals. Therefore, before purchasing, you should distinguish between professional and general household tools. In general, the difference between professional and general household tools is in power. Professional tools have a larger power to facilitate professionals to reduce the workload, and the input power of general household tools does not need to be very large.
Fourth, remember to check the outer packaging of the lithium electric drill. The pattern on it is clear, is there any damage, is the plastic box sturdy, and the buckle that opens the plastic box is strong and durable.
Fifth, observe the appearance of the lithium electric drill, check whether the appearance of the lithium battery is uniform, whether there are obvious shadows and dents on the surface of the plastic parts, whether there are scratches or bumps, and whether the entire surface is free of oil and stains. At the same time, try to hold it with your hand to see if you feel better, and whether the handle of the switch is flat. In addition, the length of the general cable should not be less than 2 meters.
Sixth, check the nameplate and instruction manual of the electric drill to see that the parameters on the nameplate of the tool should be consistent with the 3C certificate. The instructions should include the full address and contact information of the manufacturer and production plant, and whether there is a batch number for product traceability.
Seventh, hold the electric drill with your hand, turn on the power, and frequently operate the switch with your hand to make the tool start frequently and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there is any abnormal phenomenon on the TV and fluorescent lamp on site to confirm whether the tool is equipped with an effective radio interference suppressor.
Eighth, run for one minute after the lithium electric drill is powered on. Hold it with your hand during operation. The hand should not notice any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed the level. Generally, it is from the air inlet of the tool Looking everywhere, there should be no obvious arc on the surface of the commutator. During operation, there should be no abnormal noise.
In this way, a more suitable lithium electric drill can be purchased, and unnecessary trouble can be avoided in future use.