So you've finally decided that you need a cordless impact wrench. The right impact is a great addition to anyone's toolbox, while the wrong one could make the purchase useless. The wrong one could either be something that is far too overpowered for what you need it for (so long as you've got variable torque this isn't too bad, but at the very least it'll likely be heavier and bulkier than necessary), or underpowered (this is much worse, because it nearly makes the tool useless). This article I'll be covering what to look for in a battery. How much power you need, what to look for in a charger, and what type of battery you need.
The most important aspect of an impact wrench is power. The whole point of an impact is to loosen those tough-to-get-off nuts and bolts, and if you don't have enough power, you're essentially left with an over-sized air ratchet. With cordless tools the power comes from the battery, and the key spec here is volts. Overall volts are the electric measurement for power. But more volts isn't always better... but it does mean bigger (if your comparing two of the same types of batteries), so if you're concerned about the size of your cordless impact, you may want to look for a battery with less volts.
Lithium Ion Power Tools
How often will you be using your impact? And for how long? Are you the type that remembers to keep the batteries charged? Having a charger that quickly charges your batteries can be very important for some people. Some higher end cordless impacts have chargers that'll have you up and running in 15 minutes, while older chargers will often take up to 3 hours for a single battery. If you're going to be using your impacts for longer periods, or if you're often on tight deadlines and can't afford to wait for your batteries to charge, how quickly your batteries will charge is an important consideration.
Finally, what type of battery is the best? Nickel based batteries are the older style, are less expensive, but heavier and bulkier. NiMH specifically will lose its charge quickly in the cold. Lithium Ion batteries have a much higher energy density than nickel based batteries, which means you can have the same amount of power in a smaller package (or alternatively you can have more power in the same sized package). However Li-Ion batteries are the most expensive. Odds are that if you buy a higher end cordless impact (which I urge you do to, the cheap ones just aren't worth it), it'll come with Li-Ion batteries, so this probably won't affect which impact you buy, but just in case you are looking at older impacts, the difference between the batteries is important to know.
If you're buying a new cordless impact wrench, keep in mind how much power it's got (and how many volts the battery is), what to look for in a charger, and what the difference is between the different types of batteries.
Black Friday Bare-Tool Makita BGA452Z 18-Volt LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder (Tool Only, No Battery) 2011 Deals
Nov 24, 2011 20:44:36
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Black Friday Bare-Tool Makita BGA452Z 18-Volt LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder (Tool Only, No Battery) Feature
- Makita-built motor delivers 10,000 RPM for 50% faster grinding
- Compact, ergonomic design at 12-1/2 inches long and weighs only 5.3 lbs. for reduced operator fatigue
- A built-in L.E.D. protection circuit with over-torque control protects the motor
- Makita LXT Lithium-Ion battery and Energy Star rated 30-Minute Rapid Optimum Charger produces 430% total lifetime work with 2.5X more cycles
- 3-year warranty on tool
Black Friday Bare-Tool Makita BGA452Z 18-Volt LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder (Tool Only, No Battery) Overview
This 18-volt cordless cut-off/angle grinder from Makita has an LXT Lithium-Ion battery and an optimum charging system that produces 280 percent total lifetime work, with twice the cycles of an ordinary battery. This tool grinds up to 50 percent faster, with an impressive 10,000 rpm top speed -- and its ergonomic shape fits like a glove, offering even pressure and smooth control. The BGA452Z features a built-in electronic control circuit with LED warning lights for overload protection, a slide switch with lock-on, and a compact design that's only 12-1/2 inches long and weighs just 5.6 pounds.Black Friday Bare-Tool Makita BGA452Z 18-Volt LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder (Tool Only, No Battery) Specifications
Makita's 18V LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder delivers 10,000 RPM of compact grinding power to the jobsite. The BGA452Z is engineered to grind, cut, and sand a wide range of materials including tile, concrete, pipe, conduit, and more. | ||||
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The BGA452Z features a Makita-built high-torque motor that delivers 10,000 RPM, as well as an all-metal helical gear transmission which is longer lasting and delivers a more efficient transmission of energy when compared to angled gears. The BGA452Z also has a built-in electronic control circuit with L.E.D. warning lights for overload protection, and an electronic current limiter that automatically shuts off the current when the motor continues to be overloaded. This feature protects the motor for longer life.
Ergonomic Design in a Compact Size
The BGA452Z weighs just 5.3 pounds (with battery, sold separately) with a more compact design at only 12-1/2 inches long. The ergonomic shape fits like a glove with even pressure and even control, and the built-in L.E.D. light illuminates the work surface for more efficient work.
Versatile Design for a Range of Applications
The BGA452Z will grind, cut, and sand through a range of materials including tile, concrete, all-thread, Unistrut, pipe, channel iron, copper pipe, tubing, and more. It is ideal for tile setters, masons, welders, electricians, pipe fitters, sprinkler installers, HVAC, plumbers and any general contractor seeking a best-in-class engineered cordless cut-off/angle grinder. The BGA452Z is just another example of Makita's commitment to innovative technology and best-in-class engineering.
About Makita's 18V LXT Lithium-Ion Cordless Tool Series
As one of the pioneers driving the cordless tool revolution, Makita changed the game with its breakthrough 18V LXT Lithium-Ion Cordless Series. Three years after its debut, Makita's LXT Series has grown from seven to over 35 tools, providing a wide range of cordless solutions for professional tradesmen. Makita also added 18V Compact Lithium-Ion for cordless power in a more compact size.
About Makita
Makita is a worldwide manufacturer of industrial quality power tools, and offers a wide range of industrial accessories. Makita applies leading-edge innovation to produce tools that are stronger, lighter, more powerful and easier to use. Makita USA, Inc. is located in La Mirada, California, and operates an extensive distribution network located throughout the U.S. For more information, please call 800/4-MAKITA (800/462-5482) or visit the website at makitatools.com. Makita is Best in Class Engineering.
Warranty
Every Makita Lithium-Ion tool is backed by Makita's 3-Year Warranty that covers repair due to defects in materials or workmanship up to three years from the date of original purchase. Makita Lithium-Ion batteries and chargers have a limited 1-year warranty. Please see makitatools.com for complete details.
What's in the Box
Makita BGA452Z 18V LXT Lithium-Ion Cordless 4-1/2-Inch Cut-Off/Angle Grinder (tool only).
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