Why are Lithium-Ion battery packs popular? Of all the metals, lithium is the lightest. It has the highest electrochemical potential and provides the highest energy density per weight. G.N. Lewis et al pioneered the idea of Li-Ion battery in 1912. However, it was only in the early 1970's, that the world got its first non-rechargeable lithium batteries for commercial use.
Qualities of Lithium-Ion Batteries
Lithium Ion Power Tools
Due to the fact that it has the highest energy density, the Li-Ion battery has an edge over the normal nickel cadmium battery. Due to improvements incorporated in the active compounds of the electrode, the Li-Ion battery has an electric power density which is almost three times more than that of the nickel cadmium battery. Besides this, the load capacity of lithium battery is also appreciable. It has a flat discharge curve which gives you the chance to use the saved power in a voltage range of your choice.
One of the noteworthy qualities of lithium-ion battery packs is that they require low maintenance. Memory is absent and the battery requires no scheduled cycling to extend its life. When you compare them with NiMH batteries and Ni-Cd batteries, the self-discharge of Li-Ion battery is less than fifty percent, making it ideal for fuel gauge applications.
The Li-Ion battery features high cell voltage and allows manufacturing of battery packs that consist of a single cell only. This simplifies to a great extent the battery design. Several cell phones of today run on such design.
In modern times, electronic applications feature low supply voltages. This demands fewer cells for every pack of battery. However, you may need higher current flow to get sufficient electrical power at low voltages.
Battery packs featuring low cell resistance allow free current flow.
Improvement Areas In Lithium-Ion Combination
Although the battery pack is safe to use, it requires a protection circuit.
However, such a circuit restricts current flow and this is one area where experts need to work more to arrive at a solution. When not in use, Li-Ion batteries tend to age. The solution for this is to store the battery packs in a cool place that has a 40 percent state-of-charge. Storing batteries under such conditions slows down the aging process. When you order bulk battery packs, your consignment comes under regulatory laws and transportation laws. These laws do not apply for batteries ordered for personal use.
It is true that the cost of production of lithium batteries is higher when compared to nickel cadmium ones. Naturally, their selling price is higher too though not too exorbitant to afford. The cost can be brought down if experts replace the scarce metals with something more easily available, and improve the engineering and battery design.
When you compare the advantages that lithium batteries offer, the improvement areas seem to be less significant. Besides, improvements are most likely in the near future with the advancement of technology. Users certainly cannot ignore the amazing energy density of the lithium-ion battery packs which paves the way for bigger capacities and stunningly low self-discharge qualities.
Special Price!!! Makita LXT702 18-Volt LXT Lithium-Ion Cordless 7-Piece Combo Kit
Nov 08, 2011 08:59:52
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Makita LXT702 18-Volt LXT Lithium-Ion Cordless 7-Piece Combo Kit Feature
- 7 lithium-ion cordless tools for drilling, driving, fastening, sawing, grinding, and more
- Ideal for pro contractor trades such as HVAC, plumbing, electrical, and remodeling
- 30-minute rapid optimum charger communicates with battery's built-in chip during the charging process
- LXT lithium-ion battery, Energy Star 30-minute rapid optimum charger producs 430-percent total lifetime work, 2.5X more cycles
- 3-year warranty on tools, 1-year warranty on batteries and charger
Makita LXT702 18-Volt LXT Lithium-Ion Cordless 7-Piece Combo Kit Overview
The Makita 18V LXT Lithium-Ion Cordless Seven-Piece Combo Kit is built for the pro-user who demands a wide range of Best in Class cordless solutions. The LXT702 delivers Seven Lithium-Ion cordless tools for drilling, driving, fastening, cutting, grinding, demolition, and more. Each tool is powered by Makita's 18V LXT Lithium-Ion battery and the ENERGY STAR rated Makita Rapid Optimum Charger. | ||||
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Makita's LXT702 includes a 1/2-inch hammer driver-drill with 450 in.lbs. of Max Torque (BHP452Z), a powerful impact driver that weighs only 3.4 pounds (BTD141Z), a 6-1/2-inch circular saw that will cut 2X material at 45 degrees (BSS611Z), a recipro saw with 2,900 SPM (BJR182Z), and a 4-1/2-inch angle grinder with 10,000 RPM (BGA452Z). Accessories include a rechargeable flashlight with Xenon bulb (BML185), and an FM/AM Job Site Radio with iPod/mp3 player compatibility (BMR100W). The LXT702 also includes two 18V LXT Lithium-Ion batteries and a Rapid Optimum Charger for increased battery and charging power -- and less downtime on the job site.
Built for a Variety of Applications
The LXT702 delivers a wide range of cordless solutions for drilling, driving, fastening, cutting, grinding, demolition, and more. It's ideal for pro trades including HVAC, plumbing, electrical, remodeling, concrete, and any pro contractor who requires a Best in Class engineered cordless combo kit. The LXT702 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
Makita's 18V Lithium-Ion battery delivers 2,000 cycles -- 2.5X more than Ni-Cd. In addition, built-in shock absorbing features help protect the battery, and sixteen firm-holding contact terminals deliver constant high power. During the charging process, a built-in memory chip in the battery communicates with the Optimum Charger for a more efficient charge, extending the battery life. Makita's Optimum Charger is also faster: it will charge an 18V LXT Lithium-Ion battery in just 30 minutes, and an 18V Compact Lithium-Ion battery in only 15 minutes. Makita also offers a Rapid Automotive Charger for 18V LXT and 18V Compact Lithium-Ion batteries that plugs into 12V DC sockets equipped in most automobiles and trucks for added mobility. Makita's growing line of LXT cordless tool solutions features a wide range of industrial-quality power tools, including driver-drills, impact drivers, impact wrenches, saws, grinders, screwguns, rotary hammers, and more. The LXT Series also offers a jobsite radio, rechargeable flashlights, and several different combo kits.
Makita is a worldwide manufacturer of industrial quality power tools and offers a wide range of industrial accessories. Makita applies leading-edge innovation to engineer power tools that are more compact and energy efficient, yet deliver industrial strength power and results. Makita U.S.A., 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 makitatools.com. Makita is Best in Class Engineering.
Warranty
What's in the Box
Makita LXT70two 18V LXT Lithium-Ion Cordless Seven-Piece Combo Kit includes: 1/2-Inch Hammer Driver-Drill, 6-1/2-Inch Circular Saw, Impact Driver, Reciprocating Saw, 4-1/2-Inch Cut-Off/Angle Grinder, Flashlight, Job Site Radio, two LXT Lithium-Ion batteries, 30-Minute Rapid Optimum Charger, contractor bag with wheels and telescoping handle.
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SAVE NOW on the special offers below!
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The compact, lightweight design of this drill/driver makes drilling overhead or in tight spaces a cinch. View larger.
Enjoy quick, reliable drilling thanks to the drill/drivers 17 clutch settings. View larger.
Fasten and finish hard wood projects with this 18-volt drill/driver.