These are good questions, but unfortunately are difficult questions to find answers. In this article, I will give you a short course, batteries, help me get through the advertising hype and make informed decisions.
For starters, there are three basic characteristics that affect the performance of a rechargeable battery, and in turn affect the performance of a tool with these batteries. They are:
* Battery Type document
* Battery Voltage
* Battery capacity (measured in ampere-hours)
As always, there is a commitment to this type of batteries that we will examine more advantages and disadvantages in costs, life expectancy, environmental tolerance, and the cooldown.
Material Type:
There are three basic materials used in Cordless Drill Batteries; NiCd (Nickel Cadmium, sometimes written Ni-Cad), NiMH (Nickel-Metal Hydride), and Li-ion (Lithium Ion):
1. NiCd batteries are the oldest of the three types of batteries that were used for industrial purposes since the 1950s. Because of this long history, most NiCd rechargeable batteries real economic market. NiCd batteries are usually available in AA, making them convenient to replace standard AA batteries in all kinds of electronic products. Another major advantage of these batteries is their long lifespan, a NiCd battery can last up to 1500 recharges. Sorry, a NiCd AA is only 1.25 volts instead of 1.5 volts is present in non-rechargeable AA batteries. Another disadvantage of NiCd batteries is they have very low energy density, which means they must be loaded more quickly than other types of rechargeable batteries.
2. NiMH batteries have been the first attempt is to replace the NiCad batteries, a standard battery. Their most important and NiCd is their energy content is about 50 percent higher than NiCd batteries. This means that you can drill holes or cut 50% more material to 50% more before needing to recharge. Unfortunately, NiMH batteries are not charging handle well, and only the last fifth third number of charge cycles NiCd batteries. This is a problem that has been taken over NiMH NiCd, except for some electronics applications.
3. Li-ion is the new kid on the block - at least as much as cordless power tools are involved. The great thing about these batteries is that they have twice the energy density of NiCd batteries so the user can complete the duplicate work between recharges. Tools with lithium-ion cordless power later, a special circuit is integrated into the battery charger, so that these batteries to recharge (at a charge level of 80%) in as little as 30 minutes. This means that the average job, a worker (as a construction worker) did not even need a spare battery. They are also much lighter, which reduces driver fatigue. Although not so long life of NiCd batteries, these batteries last up to 1000 recharges. The disadvantage of these batteries is great cost. As a new technology on the market batteries cost about twice the cost of comparable NiCd batteries.
The current trend is to produce cordless power tools rather than the use of Ni-ion. It is expected that this trend will allow the falling prices of these batteries, beating the only negative point against them.
Battery Voltage:
It 'clear that the battery voltage must be adapted to the instrument, the battery is used in placing the battery voltage can be higher than the utility tool, while the battery voltage is too low for the instrument is not sufficiently powerful tool to operate effectively.
There was a trend over the last thirty years or more to increase the voltage cordless tools and batteries returned. This trend has increased over the past ten years. A common advertising mentions about a cordless tool is his power. Makes the difference? Yes, yes.
In short, the higher the voltage of the motor (which is what they are talking), more power or more torque can produce. This is directly related to the amount of motive power of the tool. In other words, the higher voltage cordless drill can be screwed into the wood, and saw a higher voltage cordless can make deeper cuts through hardwoods.
Similar tools may be made by same manufacturer in 12-volts and 18v power tool battery
version. While the higher voltage version will probably cost more, it is a good investment. The extra power you will use this tool for things that you can not use the tool lower voltages.
The easy way to be tested is to compare any cordless power tool is a tool of the same type. Take a cordless drill, for example. Try to lead a cast saw two inches in a dry place 2 x 4 studs. There is a good chance that you will never get the screw to the end (unless you use soap or oil to lubricate the screw.) Then try the same with a corded drill. You may not only be able to drive the screw, but it will go faster, and perhaps end the screw head below the wood surface.
Battery capacity
Battery capacity refers to how much power a battery can hold. You may think this way, if you get a lawn mower gas, which is better, use a 1 gallon gas can, or use a 5 liter gas can? It 'clear, 5 gallon gas can hold more fuel and avoid having to make another trip to the service station immediately.
The batteries have the same difference in ability. In comparing the two power tools, it is an important thing to consider. A battery with more capacity will be able to drill more holes, sink or screws cutting more trees than one with a lower capacity.
Some manufacturers make more than one version of their batteries. They may have low battery capacity 18v power tool battery and high capacity version of the battery itself. If you only use your cordless power tool for occasional repair, you may not need to spend extra money for high-capacity battery. On the other hand, if you use the same tool as a professional carpenter, you'll want high capacity battery.
Conclusion
Hopefully this has helped to de-bunk the confusion about the cordless tool batteries for you. All factors related to the purchase of a cordless power tool, batteries are the most important factor.
Many of the cordless power tools are now sold as "bare bones" unit without the battery, which allows the buyer to make their own decisions on what they want to buy batteries. In addition, since many of the handyman, and artisans have several mobile devices, it is a common replacement batteries between the instruments (at least the tools from the same manufacturer).
The last point I want to do, no matter how you use cordless power tools, it is always a good idea to invest an additional battery, since this is a part of the instrument, which is likely to fail.
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