One of the most powerful and useful innovation of modern times is indeed the rechargeable battery.
With increasing demand and use of portable devices by consumers, the need for rechargeable battery power has undergone an upsurge over the years.
Lithium Ion Power Tools
Rechargeable Battery
A group of two or more secondary cells when restored to full charge by application of electrical energy is called as a rechargeable battery. These prove cost-effective in comparison to the disposable ones as they do not need constant replacement. All you need to do is keep recharging when the charge is over.
These cheap sources of power have made our life much more convenient. However, they may prove more expensive than the regular disposable ones, but they do provide financial advantage by optimum utilization of the cell.
The rate of recharging batteries has increased substantially over the years, from the times when it used to take as much as 12 to 16 hours, to the charging times of today, an hour or less to recharge it complete.
Now manufacturers are working on new models that promise to increase the life of the batteries. The lifespan depends on many factors such as
the chemical makeup,
total usage,
temperature,
humidity
and other environmental conditions.
Other crucial factors that contribute to increased lifespan are how they are maintained and the number of life cycles or discharge. The life expectancy of each type is different.
A rechargeable battery made of nickel and cadmium (NiCd) and nickel metal hydrides (NiMH) have less storage capacity, approximately half, of alkaline cells.
They tend to discharge faster and perform less efficiently at lower temperatures. However, the life of rechargeable battery depends completely upon its usage and the power of NiCd and NiMH batteries dies out gradually.
Overcharging is yet another factor that affects life and this can result in overheating producing leakage or overflow of charge.
Rechargeable Battery Types
Many portable compact mobile devices and electronic gadgets run on stored power. Devices like laptop, cell phone, digital camera, camcorder and remote control run on different types of rechargeable batteries. These are listed below:
NiMH - Nickel Metal Hydride (NiMH) is the most preferred choice for cell phones, camcorders, digital cameras, and other personal electronics. Though this looks similar to nickel cadmium, it has double or triple the capacity of a nickel cadmium. It's best to not overcharge a nickel metal hydride.
NiCd - Nickel Cadmium (NiCd) costs less than a NiMH and provides the same voltage levels through the entire life. Hence, they are commonly used in toys and electronic devices.
The most commonly faced problem by nickel-cadmium is the memory effect wherein hard indissoluble cadmium crystals are formed deep within which are an unavoidable product of discharge. This effect can be avoided by allowing it to be completely discharged once every two to three weeks and then fully recharge the same.
LiION - Lithium Ion (LiION) are among the newest advances in technology. They have more capacity and prove expensive in comparison to other types available. The life of a Lithium Ion commences from the date of manufacture rather than the number of times it is charged and discharged.
Rechargeable batteries are an environmentally friendly and economically sound choice. Rechargeable batteries are available in specific shape and sizes like disposable ones, but rechargeable batteries need a specific charger to recharge. The time taken to charge the battery depends on the number of times it can be recharged, and the actual life is dependent on the type of technology used to build the battery.
With digital devices driving sales at retail, rechargeable batteries continue to reign the market.
Special Price!!! Bosch PS20-2A 12-Volt Max Lithium-Ion Pocket Driver with 2 Batteries
Oct 27, 2011 11:37:23
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Bosch PS20-2A 12-Volt Max Lithium-Ion Pocket Driver with 2 Batteries Feature
- 80 in. lbs. of torque, drives 100 3-inch screws per battery charge
- LED light, ideal for tight spaces and applications
- Forward/reverse button makes it equally useful at driving or removing screws
- Variable speed trigger provides increased sensitivity and control
- 10+1 clutch enables precision driving and eliminates over torque in soft base materials
Bosch PS20-2A 12-Volt Max Lithium-Ion Pocket Driver with 2 Batteries Overview
Forty percent lighter and 33% more productive than any other ultra-compact drill/driver currently on the market, the Bosch PS20-2A 12-Volt Max Lithium-Ion Pocket Driver with Two Batteries offers big power in a small package. Ideal for carpenters, remodelers, electricians, woodworkers, and do-it-yourselfers of all kinds, this driver is an invaluable addition to your tool chest.
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 With an ergonomic design, you'll stay comfortable on even the longest jobs. View larger. |
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 The PS20-2A can drive 100 three-inch screws on a single battery charge. View larger. |
The PS20-2A gets its power from Litheon batteries, the most advanced lithium-ion batteries available today. These batteries allow more battery charges and provide longer runtime with no memory effect--meaning the batteries don't need to be empty before charging. The batteries can also be taken out of the charger before charging is complete.
Other benefits include: significantly less self discharge; electronic cell protection that guards against overheating, overload, and deep discharge; and no loss of power from the first to last screw or hole. Best of all, these batteries will fully charge in 30 minutes and will be at 85% capacity in just 15 minutes.
Compact, Lightweight Design for Efficient, Fatigue-Free Work
Measuring only 6.0 by 6.5 inches--nearly half the size of stick drivers and other ultra-compact drills/drivers--and weighing just 1.8 pounds (with batteries), the PS20-2A packs a punch without taking up too much space. Its compact design makes it easier to drill straight holes at high and otherwise odd angles, allowing you to accomplish a day's worth of professional drill/driving tasks without excessive fatigue. You can also carry the tool in your pocket, hang it on your tool belt, or keep it in a nail pouch when you're climbing ladders or moving from task to task.
High Torque and Fast Speeds for Quick, Reliable Results
This powerful tool provides over 100 in./lbs. of torque--25% more torque than comparable models--for ultra-efficient driving and drilling. It drives 100 three-inch screws (per battery charge) and drill holes up to 1/2-inch in diameter. The PS20-2A also offers variable speeds up to 500 RPM--25% more speed for fast, reliable results.
10+1 Clutch with Max Setting for Improved Control
The 10+1 clutch system, similar to that of standard drills/drivers, offers 10 drives and one "Max" drill setting for control and precision, while eliminating over-torque in soft-base materials. The Max setting also allows for pilot and other small bore holes. For added convenience, the 10+1 controls are conveniently located at the front of the drill, so it's a snap to make quick adjustments.
Ergonomics and Soft Grips for Long-Term Comfort
Besides its light weight, the PS20-2A boasts great ergonomics and soft grips to deliver comfort over extended periods, giving you the freedom to work all day without over-taxing your wrists and hands. And it's easy to keep bits handy, thanks to the tool's "Clic-Change" bit holder, which also makes 1/4-inch hex shank bit changes quick and easy. Additionally, the chuck is magnetized to secure locking bits.
Variable-Speed Trigger and Forward/Reverse Button for Precision and Versatility
The PS20-2A drills up to 3/8 inch in wood and 1/4 inch in steel. To help ensure high-quality results, the variable-speed trigger provides sensitivity and control for optimum precision. And for added versatility, there's a forward/reverse button for driving or removing screws.
User-Friendly and Durable for Hassle-Free Drilling and Driving
A motor brake features an improved design for serial screwing, while a metal clutch ring has a robust design for long-term durability. There's also an LED to illuminate dark or enclosed areas while you work.
ProVantage Guarantee
The PS20-2A comes with the ProVantage three-year protection plan, which guarantees two years of battery protection and one year of tool protection. Under this plan, you can receive two years of free battery replacements, tool replacement for one year, and a free tool repair package for the second and third years.
What's in the Box
Pocket Driver with two 12-volt batteries, 30-minute charger, soft carrying case, and two 1.5-inch bits.
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| 12V Max Lithium Ion Family of Tools | |||
| For more information, click on the images below | |||
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| PS10-2A Impact Drive Kit | PS20-2A Pocket Driver with Two Batteries | PS50-2A Multi-X Cutting Kit | PS50-2B Multi-X Carpenter Kit |
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| PS30-2A 3/8-Inch Drill/Driver | PS40-2A Impact Driver | CLPK21-120 Impact Driver and Pocket Driver Combo Kit | PS70-2A Metal Shear |
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