Tell You 5 Things To Know Before Buying A Cordless Power Tool
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Cordless tools used to be heavy, unwieldy behemoths sporting fat nickel-cadmium batteries. But tool companies have slimmed their products down with sleek, longer lasting lithium-ion cells. Thing is, Li-ion tools are expensive. Which is why manufacturers still make the old NiCad tools.
If you're not too handy and plan on only using your power tools for the occasional shelf hanging or plywood cutting, you'll be just fine with NiCad batteries. They weigh a little more and they take a long time to charge (sometimes as much as three hours), but for most projects you're not likely to go through more than the two batteries most tools come with. And they cost a lot less: The same tool kit that might be $US275 with Li-ion batteries would only be $US150 with NiCad.
But if you plan to spend every weekend this spring building that climate-controlled comic-book library, you're going to want to go Li-ion. The batteries charge in as little as 30 minutes, they last longer, and they weigh less. Which means your arms won't get tired as quickly. You can even choose between regular slim packs and longer-life fatties.
Size matters
It's simple: the higher the volts, the higher the power. That means more torque for driving screws or miter sawing, more speed for jigsawing and sanding, more hammer action for impact driving. Unless you're a pro, you probably don't want anything bigger than an 18-volt tool. A good 18V drill will get you through big jobs like framing and deck building, and you can cut through a lot of plywood with an 18V circular saw (especially because cordless circ saws have thinner blades to make up for the lesser torque).
Don't discount the smaller tools, though. Outside of circular saws, every tool is replicated in a 12V version. The tools may look a little girly, but they work just fine. Drill/drivers, in particular, are great performers with 12V batteries, able to sink drywall screws into framing or even do some smaller decking jobs.
Keep in mind, though, that there are still some tools you should buy with cords. If you need miter saws or circular saws to cut thick lumber, you really need the consistent power of a plug-in tools. Same with hard workers like reciprocating saws and grinders.
Tool companies are like crack dealers
Good news is, it pays to become an addict. Manufacturers inspire brand loyalty by selling tools both with batteries or wihtout. That way, once you've bought your first tool-and its two included batteries-you can use them on all the other tools from that platform. But only on tools from that platform. It's a good idea, then, to make your buying decision based on everything a company sells tools you might need down the line.
So what to look for? Since the basic function of most power tools doesn't vary much from company to company, check out the accessories. You might fall in love with a quick-change chuck, a good LED light, or even a belt hook. Know what size blade or type of bit a tool takes and be sure that's what you want. Then there's price-you get what you pay for. A higher price point often reflects more money spent on innovation, ergonomic design, or durable materials.
Retro is cool
One way to save a bit of dough on new tools is to retrofit your old tools with new batteries. If you already own a set of NiCad tools, some companies, including DeWalt, Milwaukee and Ryobi, have designed their Li-ion batteries to fit old models. A new extended life Li-ion battery costs about $US100, but you can save a lot of money if you already have a whole suite of tools that can use it.
There's a battery for every personality
NiCad power tools batteries lose power if left unused for a while, so they are good presents for careful planners. Impulsive tinkerers, however, may find their building buzz harshed by a mandated charging break. (On the plus side, they perform better in colder climates, so go for it, Canada!) They can also have memory problems, so they're better off left to drain before being recharged again.
Li-ion batteries, however, can be left plugged in at all times, and most chargers are designed to top off the tool once a week as needed. The biggest problem with Li-ion batteries is not knowing when they're dying. Manufacturers call this a "fade-free charge" but what it really means is you won't get the telltale slow-down as the batteries wear out. The tool will just stop.
Questions and Answers
The range of cordless power tools available to the tradesman is now extensive and the choice has never been greater in terms of the voltage platform or the type of tool now available as a cordless option. This article outlines the improvements that have been made with cordless power tools and outlines their differences compared to mains-powered tools.
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do not run the cordless tool until the tool stops moving. you can reverse polarity in some of the cells within the battery, making them unchargeable and unusable. in effect, turning an 18 volt into a 14.4 volt battery. in fact, as soon as you notice a loss in power in the cordless tool, switch the battery.
A discussion of the differences between cordless and electric power tools. Great resource for beginners!
(Digital-camera-battery.net)--It's time for a new set of power tools and you're in luck because there are lots batteries to choose from. In general, the new breed of power tools are compact, lighter weight and loaded with power. When it's time to buy, consider the combos, which typically feature a cordless drill/driver, circular saw and a work light. Combination pricing is a better value and even if you don't need that third or fourth tool today, it may come in handy in the future.
One of the major benefits to cordless power tools is that most manufacturers make tool-only versions of their products, which are available without batteries or charger. These are much cheaper to buy, and mean that you won't be swamped with batteries and chargers for every tool. Having purchased a full cordless product including batteries and charger, a cordless power tool system can then be built up of additional, compatible, body-only tools without incurring the cost of batteries and charger.
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Battery chargers, including NiCad (nickel-cadmium) chargers, usually operate for many years and exceed the lifetime of a NiCad battery. It's likely you will get through three or more NiCad batteries before you have a problem using the charger. However, if you find your battery doesn't charge, check the NiCad charger to diagnose whether it's producing an electrical charge; it may simply need a replacement fuse.
Using rechargeable batteries is a good way to reduce the waste dumped into landfills, because one rechargeable battery can replace dozens of single-use batteries. However, there is a wide variety of battery and battery charger technology available. With the alphabet soup of NiCad, NiMH, and Li-ion batteries available, it can be confusing to know the best options available. Luckily it is not difficult to learn the basics.
Replacement laptop batteries can cost a third, if not more, of the price of a new laptop. Discounted prices constantly offered on new laptops often result in people choosing a new laptop instead of a replacement battery, even though the laptop is fine. Build an external laptop battery using lithium polymer (LiPo) batteries to save a lot of money and keep your existing laptop. Wire a few LiPo cells in series and your laptop will be ready to go.
Rechargeable batteries have grown in use over the years as people are looking to save money and reduce waste. There are several types of rechargeable batteries, made of lithium-ion, nickel-cadmium, nickel-hydride or other materials. For years, it was believed that rechargeable batteries had the advantage of being reusable but were poor performers compared to their alkaline counterparts. Rechargeable batteries have improved, but they still have both advantages and disadvantages.
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