Volt Battery Dewalt

Can an electric motor take different voltages?

I am interested in buying an electric bike that has 2 batteries that opperate at 12v @ 10 amp hours. They are designed to work together to deliver 24v to a 450 watt (peak) motor at the front wheel. Unfortunately these are heavy SLA batteries, and I would like to replace them with state of the art Nanophosphate Litihium Ion batteries.

Now the kicker: I can only find 36v versions for use in DeWalt power tools (though they are very energy dense).

So what I am wondering is if I can buy 2 / 4 of these and wire them to deliver no more than 36v continuous to the 24v motor and will it improve performance or just burn up the components.

Also as an added question, if it is not possible to run 36 volts directly is there a controller that could accomplish this.

Thanks!

The motor is from Currie Technologies, specialists in electric bikes.
I should add that the motor is DC as will be the current delivered to it.

Just replacing the 24V pair of batteries with a 36V group will very likely cause something to fail. It is possible that a controller could be designed to allow a 36V group of batteries to work with the motor, but it isn't something that you are likely to be able to easily find and mate up to the existing motor.

Additional information:
If you get a 36V PWM controller and set the current limit to the maximum continuous rating of the motor, that might keep you out of trouble. If the motor has a higher short-time current rating that you want to utilize, that might be difficult to set up.

Look at: http://www.dartcontrols.com/

More additional information:
It looks to me like Currie Technologies offers some models with a 3X12V 36V battery package, 36V controller and 450W motor.

The Popular Hand Tools With High Level of Performance

Hand tools are very useful in many types of work. The popular brands are Craftsman, DeWalt and Stanley. They produce durable hand tools with many additional features.

It was in 1969 somewhere in northern Kenya that the earliest hand tools were discovered. These tools are believed to be about 2,600,000 years old. These days the popular manufacturers have produced quality standards with high level performances hand tools. There are manual hand tools intended to be used through the help of mechanical force and electrically powered hand tools employing electrical current.

Manufacturers in the Tool Industry
Famous manufacturers in the tool industry such as DeWalt, Stanley and Craftsman crafted hand tools boast of several features and professionally grade performances. We enlist a few examples below.

DeWALT DW059K-2 18-Volt Ni-Cad 1/2-inch Cordless Impact Wrench Kit
The DW059K-2 Cordless Impact Wrench from DeWalt is versatile, extra durable and engineered to professionally accomplish tasks. It is powered by a nickel-cadmium battery with 18 volts. This power is enough to provide an incredible 3,600 inch-pounds of torque, and an amazing 2,600 blows per minute. This means it is powerful to easily break loose any knots like tire lugs.

It features two-speed, variable-speed motor. It can be operated from zero to 1,650 rpm, and zero to 2,600 rpm. Such wide operating range provides more control and makes the tool more versatile.

The wrench is also equipped with a durable fire rocker-switch for easy and fast forward and reverse. This switch has two parts. The top is squeezable and the bottom is depressible. These function to tighten as well to loosen a fastener.

The impact wrench has also a metal square detent pin anvil with a measurement of 1/2-inch. It holds sockets in place strongly and firmly. And the handle of DW059K-2 Impact Wrench is anti-slip comfort grip that offers extended comfort and control. The impact wrench is even equipped with durable tough magnesium gear case and heavy-duty all-metal transmission.

This wrench comes along with a kit box, two 18V XR+ PACK extended run-time battery packs, and 1-hour charger. This tool measures 16 x 14.2 x 5.2 inches.

Stanley 20 oz Anti-vibe Curve Claw Nailing Hammer- FatMax Xtreme number 1164
The nailing hammer manufactured by Stanley said to be anti vibration curve claw and 20 oz fatmax is strong, dependable and durable. It has precision balanced and is constructed out of forged steel. It has ergonomic and unique design as well.

The Stanley nailing hammer features an exclusive anti-vibe technology. This means the hammer is able to minimize vibration and shock at impact. It also featured with exclusive grip control. This also means the effects of torque on elbows and wrists will be lessened.

The Stanley hammer also features magnetic nail start. This is helpful for extended reach and capable for one-handed nailing. The Stanley 51-164 Curve Claw Hammer has a dimension of 2.1 pounds and supported by lifetime warranty.

Craftsman Curved Claw Hammer with 13 inches Fiberglass Handle - 16 oz
The Craftsman Curved Claw Hammer is a portable professional grade nail puller. This hammer has a forged head and made of high carbon steel. This means it has increased strength and durability. The hammer features patented rib reinforced claws and third claw. This is very useful to pull nails in tight places.

The handle of the hammer measures 13 inches and is made of Solid fiberglass material. And the handle grip is made of Synthetic rubber and displays a Chevron grip pattern for more comfort. The curved claw hammer has a weight of 1.6 pounds and its head has a weight of 16 ounces.

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Volt Battery Dewalt

Battery Charger

How do I charge my canon powershot sd400 battery without a battery charger?

The battery is a lithium battery pack nb-4L and I can't find a replacement charger. If you know where to find one, that would be helpful also.

Are you saying that Canon no longer produces chargers for that battery?

The SD 400 is over 3 years old ... you may want to consider buying a new camera if Canon has discontinued the NB-4L charger. What happened to yours? Did it just stop working?

Solar Battery Charger

What is solar battery cell?

Let me view the introduce from the wikipedia

A solar cell or photovoltaic cell is a device that converts solar energy into electricity by the photovoltaic effect. Photovoltaics is the field of technology and research related to the application of solar cells as solar energy. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cell is used when the source is unspecified. Assemblies of cells are used to make solar modules, which may in turn be linked in photovoltaic arrays.

Simple explanation

1. Photons in sunlight hit the solar panel and are absorbed by semiconducting materials, such as silicon. 2. Electrons (negatively charged) are knocked loose from their atoms, allowing them to flow through the material to produce electricity. Due to the special composition of solar cells, only allow the electrons to move in a single direction. The complementary positive charges that are also created (like bubbles) are called holes and flow in the direction opposite of the electrons in a silicon solar panel. 3. An array of solar panels converts solar energy into a usable amount of direct current (DC) electricity.

Solar battery chargers are better for the environment in a few ways. For one, with them, batteries can be recharged, therefore no longer contributing to growing landfills. Also, batteries have potentially harmful metals inside them – we do not want to be simply throwing them out into landfills!

Also, if using batteries that can be recharged with a solar battery charger, a person can stop wasting his or her money on the purchase of new batteries.

The batteries of cell phones, PDAs, laptops, mp3 players, and more can be charged by solar battery chargers. This means that you do not have to rely on electricity to charge these devices. This is especially good because most electricity is created by non-sustainable, polluting methods.

Solar battery chargers are also good because they allow the users to charge devices, even when no power outlets are around. This makes them especially useful when working out in the field, traveling, hiking, and/or during an emergency.

It does not matter if you use a 12 volt solar battery charger, a solar car battery charger, or any other type of charger – the use of any solar battery charger is going to help alleviate waste. By supporting and using solar battery chargers and other sustainable technology, you can help make a difference in today’s world.

The solar cells positive terminal is connected through the diode to the positive terminal of the 1.2V battery. If the voltage of the solar cell drops below 1.4 volts then with the 0.2V the blocking diode takes there wont be enough potential to charge the 1.2V battery. The purpose of the diode is to disallow current dissipating out from the battery to the solar cell when this low voltage situation occurs in the solar cell.

Usually the solar battery charger are used in camera and camcorder, and placed on the packbag as follow :

.

But how to use a battery solar charger ?

The solar cells positive terminal is connected through the diode to the positive terminal of the 1.2V battery. If the voltage of the solar cell drops below 1.4 volts then with the 0.2V the blocking diode takes there wont be enough potential to charge the 1.2V battery. The purpose of the diode is to disallow current dissipating out from the battery to the solar cell when this low voltage situation occurs in the solar cell.

Usually Solar battery charger can used in digital camera battery when you take photos in the open air.

The article is from : Solar battery chargers

About the Author

Focus on write review and introduce of laptop battery, electronics and digital produce.

Battery Charger

Battery Fit

Can a Nikon D80 battery fit in a Nikon D90?

I am getting a D90 but I have a few extra D80 batteries. Do I have to buy new or will the D80 batteries fit in a D90?

*Note*-Not the extended battery grip, just talking about the standard rechargeable battery here.

You are in luck! They both take the Nikon EN-EL3e Lithium-Ion battery.

You can read about the cameras side by side here---

http://www.dpreview.com/reviews/compare_post.asp?method=sidebyside&cameras=nikon_d80%2Cnikon_d90&camsel=nikon_d80&show=all

OLYMPUS LI-40B Digital Camera Battery

OLYMPUS LI-40B Digital Camera Battery ( Li-ion , 3.7V, 660mAh)

Here you will find some of the best prices on replacement OLYMPUS LI-40B battery, Listed below are compatible OLYMPUS LI-40B battery Replacement, We guarantee the battery OLYMPUS LI-40B are brand new with 1 year warranty, if has any faulty, we promise to arrange the refund or replacement for you.

Battery Type: Li-ion

Battery Capacity: 660 mAh

Battery Color: Black

Battery Dimension: 40.00 X 31.10 X 5.90 mm

Battery Volt: 3.7 V

Battery Weight: 14 g
Work with OLYMPUS LI-40B Digital Camera Battery Part No:

• LI-40B

• LI-42B

Work with OLYMPUS LI-40B Digital Camera Battery Fit Model:

• D-630 Zoom

• IR-300

• FE-5500

• SP-700

• Stylus 710 Digital

• Stylus 720 SW

• µ 700

• µ 720SW

• FE-150

• µ 710

• Camedia X-600

• FE-150 Zoom

• FE-160

• µ 750

• µ 740

• µ 730

• µ 725SW

• FE-190

• Stylus 730

• Stylus 740

• Stylus 750

• µ 725SW

• Stylus 780

• µ 780

• Tough 770SW

• Tough 725SW

• µ 720

• µ 760

• X-785

• X-790

• X-795

• X-800

• Stylus 820

• Stylus 830

• Stylus 1200

• µ 790SW

• Stylus 790SW

• FE-280

• FE-290

• FE-300

• µ 795SW

• FE-220D

• Stylus 760

• FE-250

• FE-240

• FE-230

• Stylus 770 SW

• FE-220

• µ 1200

• µ 770SW

• µ 820

• µ 830

• µ 840

• Stylus 840

• µ850SW

• Stylus 850 SW

• FE-320

• FE-330

• FE-340

• FE-350

• FE-350 Wide

• FE-350 Grand Angle

• FE-350 Grand Angle

• 1200

• 700

• 710

• 720

• 720SW

• 730

• 740

• 750

• 760

• 770SW

• 780

• 790SW

• 795SW

• 820

• 830

• 840

• 850SW

• ????1060

• FE-360

• µ 1040

• FE-20

• µ 1050 SW

Description of OLYMPUS LI-40B Digital Camera Battery

• 100% compatible with OEM battery
• Manufactured By High-Capacity power products
• gives OLYMPUS LI-40B battery pack a long life, and light weight.
• Full 1 year warranty. We sell high quality products and we are willing to back them up!
• 15 Days Money Back.
• We ship to UK and Ireland destinations only.
• Order your OLYMPUS LI-40B battery before 2:00PM we will usually ship the same day.
• We only accept PayPal.
• All Products are shipped by Royal Mail unless otherwise stated

About the Author

We are a professional manufacturer for high-quality replacement batteries laptop battery, AC adapter, dc
adapter,camcorder battery, camera battery, power tool battery, battery charger, pda battery, mobile phone battery and two-way radio battery, all the batteries are brand new with 1 year warranty, fast shipping

Battery Fit

Saw Case

Choosing a Cordless Circular Saw

A circular saw is a powerful, portable, and versatile tool designed to cut wood with a large spinning blade. While most circular saws are specifically designed to cut wooden materials, most can also be used with specialty blades made to cut metals, plastics, and other industrial materials. Circular saws have a flat, pivoting shoe that moves up and down for depth adjustment, and to the right or left (although generally to the left, from zero to 45 or 50 degrees) for angled cuts or edging. Circular saws are also built with a blade guard which covers the blade almost entirely to protect operators from the jaws of a spinning blade. Most circular saws also have additional safety features like blade and trigger locks -- but don't let these mechanisms fool you. Circular saws can be very dangerous, and because they are relatively simple to use and maneuver, it is easy to forget the potential dangers of a sharp, and spinning power tool as you work.

Circular saws are excellent for rip cuts, cutting with the grain, and also for cross cuts, or cuts made against the grain. The saw is also surprisingly accurate - even without a guide. Because the blade is so large, its bigger size generally keeps your cuts on track. Where accuracy is key, however, a fence or guide can be attached to ensure optimized cutting precision. There is a wide range of circular saws available from 4in. to 7-1/4in. (7-1/4in., for example, refers to the blades diameter), and hand-held to table mounted. Craftsmen, however, can not get too far without needing a lightweight and cordless circular saw to get the job done.

The cordless circular saw is lightweight and convenient eliminating the need for outlets and to lug around endless, knotted ropes of power cord. With its portability and more compact size, the cordless saw can go more places and conveniently conquer your projects with not much sacrifice to power. From commercial jobs to backyard plans, no toolbox should be without this cordless giant.

Milwaukee's 18v 6-1/2in. cordless circular saw delivers extreme power in an ergonomic and lightweight design. For increased performance and comfort on the job the tool has a compact design and soft grip handle that keeps it perfectly balanced for always precise and controlled cuts. The saw is also designed with magnesium lower and upper blade guards to provide maximum durability and keep you, and your blades safe from accidental drops. Magnesium is an element both lighter and stronger than aluminum increasing the stability and durability within the tool in a more lightweight, more efficient package. The saw is also built with an easy-to-read, aviation grade aluminum shoe designed to ensure greater accuracy, withstand wear, and resist breakage and bending. Milwaukee's 2630-22 is built with a powerful 3,500 RPM motor that quickly and easily cuts through even the toughest materials. This powerful cutting capacity is ideal for plumbing, electrical, framing, finishing, and carpentry applications, and is conveniently versatile with a 2-1/8in. cut capacity at ninety degrees (standard position) and 1-5/8in. at forty-five degrees.

Milwaukee is also well known for their advanced and unrivaled battery power. The 2630-22 circular saw utilizes Milwaukee's long lasting 2.8 amh (amp hours) lithium ion batteries. These high capacity batteries last longer to increase your productivity, and produce 20 percent more torque to deliver the most powerful cuts. The saw also features an electronic overload system, a mechanism designed to protect the saw from burning up. Keeping the tool's motor safe from overuse, the overload system extends the overall life and productivity of the saw. Additionally, the tool features an electronic braking system that stops the blade quickly to reinforce safety on the job. Milwaukee's circular saw is ideal for any serious woodworker - contractors and at-home hobbyists alike. With more durability and comfort than most cordless saws on the market, the 2630-22 is excellent for cutting all types of wood and metal. Milwaukee's circular saw comes with two 18v high-capacity lithium ion batteries, a one hour charger, 6-1/2in.- 24T carbide-tipped blade, and a convenient contractor bag. The saw is also backed with Milwaukee's industry leading five year warranty, and a five year / 2000 charge warranty on the batteries.

Makita offers an 18v LXT lithium ion 6-1/2in. circular saw with a powerful 3,700 RPM. The saw's ergonomic and balanced design delivers optimal operator control, even pressure, and simplified operation as you work. Weighing only 7.1 lbs the saw is lightweight and easy to control, and has two built-in L.E.D lights for better illumination of your work space. The saw has a high torque motor with a cut capacity of 2-1/4in. at ninety degrees, 1-9/16in. at forty-five degrees, and 1-7/16in. at fifty degrees. For additional durability and smooth, accurate cutting, the BSS610 has a precision machined, heavy gauge base, and a built-in dust blower to keep your workpiece clean.

Makita's circular saw utilizes lithium ion technology to provide longer battery run-time and an optimized overall lifespan. Makita also provides an advanced charging system (45-minute Optimum Charger) that, through built-in CPU chips, communicates with the battery to maximize performance. Throughout the charging process the charger monitors, with "Active 3 Control" technology, the current, temperature, and voltage within the battery. The 45-minute Optimum Charger also has a built-in fan to cool the battery and deliver optimal performance for the life of the battery. The BSS610 is built with a two-piece armature and field, and has externally accessible brushes to simplify any necessary service. Makita's 18v, 6-1/2in. circular saw includes two LXT lithium ion 3.0Ah batteries, a 45-minute Optimum Charger, saw blade, and a tool case for convenience and portability. Additionally, Makita provides a three-year warranty on the tool and a one-year warranty on the batteries.

DEWALT also offers an 18v XRP cordless circular saw kit with a commanding 3,700 RPM for fast and smooth rip, and cross cuts. The tool is also built with a strong magnesium shoe and upper guard to deliver enhanced durability. For versatility in multiple applications the saw has a bevel capacity from zero to 50 degrees with a cut depth of 1-5/8in. at 45 degrees, and 2-1/4in. at ninety degrees. DEWALT's DC390K has easily replaceable brushes and a fan-cooled motor for optimal power and durability. Its XRP battery offers extended run-time for increased productivity, and longer overall battery life for optimized efficiency on the job. Weighing only 8.7 lbs the circular saw is lightweight and convenient for all cutting applications - industrial and home projects alike. DEWALT's DC390K 18v XRP cordless circular saw kit includes a one hour charger, 18v XRP battery pack, 16T carbide-tipped saw blade, a blade wrench, rip fence, and a heavy duty kit box for security and mobility. The tool is also backed by DEWALT's three year limited warranty on the saw and battery.

These options provide a pretty good review of what's available for cordless circular saws. The portability and power of the tool coupled with its lightweight, compact, comfortable, and cordless design, establish the cordless circular saw as a must-have in any craftsman's toolbox. For rip cuts, cross cuts, beveled or angled cuts, and its fast accuracy, the circular saw is the ultimate cutting tool.

About the Author

As a student at the University of Utah, Mallory Kramer is currently earning an English degree. Three years ago she joined M&M Tool adding to their over 150 years combined experience; there, she specializes in tool parts and web communications. For over 60 years M&M Tool has provided professional service to the tool industry with parts, sales, and service to professional level woodworking products, tools, and machinery.

Saw Case article

Lithium Ion Cordless

Modern Power Tools - the Lithium Ion Cordless Drill

Power tools are essential for those jobs, which require more intense workmanship that ordinary tools cannot handle. A power tool is basically a tool, which is powered by an electric motor or alternatively a compressed air motor or petrol driven motor. They are typically used in the construction industry but are also used around the house to complete those otherwise hard to do jobs. Power tools are used for cutting, drilling, shaping, grinding, painting, sanding and polishing. Machine tools are a form of power tools used in metal work. It is not uncommon for the same power tool to be used both in wood and metal work.

The first used power tool was the lathe. Power tools were initially developed during the time of the industrial revolution. When factories began to use power tools to drive belts from overhead shafts. The main power source was a water wheel or later a steam engine. These tools were stationary until the introduction of the electric motor in the 1880s, which made the self powered stationary and portable tools we know today possible. The electric motor has remained the preferred source by which stationary power tools are driven. These tools use a cord but what has become increasingly popular for portable power tools is the battery. However batteries still have limitations because of they run out and lack sustaining power. Cost of buying and maintaining the use of batteries keep the cordless versions in lower demand on the market. Nailers and paint sprayers more frequently use air pressure, while chain saws, weed eaters and lawn motors have a preference for petrol driven motors.

One of the most popular power tools is the cordless drill, which is a type of electric drill but instead of being connected to a wall socket uses rechargeable batteries. Typically cordless drills come in the hammer drill configuration and mostly have a clutch setting, which allows them to be used for driving screws. In order to continue working without much interruption the tradesman will have a number of spare battery packs charging while drilling, so that he or she can quickly swap them.

The earliest cordless drills used 7.2V battery packs but over the years the battery voltage has increased to 18V and more, thus allowing these tools to produce as much torque as those drills connected to a main power supply. The main disadvantage of most current cordless drills is the use of nickel-cadmium (NiCd) batteries, which develop a "memory effect" or internal short circuits due to dendrite growth. This severely limits their usefulness and life span and in turn creates a hazardous materials disposal problem. Drill manufacturers are now producing lithium ion batteries. Makita Electric Works and Milwaukee Electric Tool Corporation are two such manufacturers producing lithium ion batteries. The main advantages are lack of memory effect and very short charging time. Lithium ion batteries can provide an hour of work per twenty minutes of charging instead of vice versa. These batteries also have a constant discharge rate meaning that the power output remains constant until the battery is depleted, something that nickel-cadmium batteries lacks. This constant discharge rate makes cordless drills much more versatile. Lithium-ion batteries also hold a charge for a significantly longer time than nickel-cadmium batteries, about 2 years if not used, vs. around 4 months for a nickel-cadmium battery.

Cordless drills will increase in their popularity as science overcomes its' limitations and as power tools become increasingly powerful.

About the Author

Amanda King is a marketer who supplies a variety of consumer products including tools and trade equipment products. Buy your handyman and trade equipment from these sites, you will not be disappointed.

Lithium Ion Cordless article