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Making the Power Tool Battery Decision: NiMH vs. NiCad vs. Li-Ion by garrett french

If you've ever wondered about the difference between NiMH vs. NiCad vs. LiIon you're not alone - there are thousands of DIY home improvement types out there wondering the same thing as you, and wondering how to make the best decisions for their next power tool purchase.

Here's a question you may be asking yourself: "What is the difference between NiMH and NiCd. How do Lithium Ion batteries work compared to the others?"

To tackle this question we have to look at the criteria for making the power tool battery decision. And then bring Lithium Ion into the equation to round out the choices when you're next making a power tool purchase decision.

Read closely - your power as a consumer lies in your understanding of the products available!

Criteria for Making Your Power Tool Battery Decision
According to Building a Better Power-Tool Battery you should be looking at a battery's run time, life cycle, volts and amp-hour rating.

Run Time:
Quite simply run time is the amount of work a tool can do before its charge runs out.

Life Cycle:
Life cycle is how many times the battery can be recharged during its life time.

Volts (Power):
Volts will determine work output of the tool. John Sara, cordless product manager for Milwaukee Electric Tool, says "Individuals currently using a 18-volt NiCad battery, should see 2 - 21/2 times more work output from a V28."

Amp-Hour Rating
The higher the Amp-Hour rating the longer the battery lasts - be aware that power tool batteries of the same voltage will often have different Amp-Hour ratings.

NiMH vs. NiCad vs. Li Ion: Picking What's Right for You

Nickel metal hydride (NiMH) Batteries:
I don't think I could define it better than wiki pedia: 'A nickel metal hydride battery, abbreviated NiMH, is a type of rechargeable battery similar to a nickel-cadmium (NiCd) battery but has a hydrogen-absorbing alloy for the anode instead of cadmium. Like in NiCd batteries, nickel is the cathode.'

Nickel metal hydride (NiMH) advantages:
-- lighter than NiCad
-- 2-3X capacity to equal size NiCad

Nickel metal hydride (NiMH) disadvantages:
-- fewer life cycles compared to NiCad
-- shorter run time
-- performs the worst in cold temperatures, so keep that in mind if you plan to use tools powered by NiMH outdoors in cold weather
-- higher self-discharge level than NiCad
-- voltage drop at near-discharged levels

Nickel cadmium (NiCd) Batteries:
According to Wiki pedia: the 'nickel-cadmium battery (commonly abbreviated NiCd and pronounced 'nye-cad') is a popular type of rechargeable battery for portable electronics and toys using the metals nickel (Ni) and cadmium (Cd) as the active chemicals.'

Nickel cadmium (NiCad) advantages:
-- longer life cycles
-- performs in cold temperatures (perform well to 20F)
-- lower self-discharge level than NiMH
-- no voltage drop at near discharged levels

Nickel cadmium (NiCad) disadvantages:
-- Heavy, making it harder to use for longer periods of time
-- May suffer from 'Memory Effect' or 'False Bottom Effect' if constantly discharged half-way and then recharged (wiki pedia)

The Lithium ion (Li-Ion) Battery:
The new comer to power tool batteries, Lithium Ion are hot because they have 'one of the best energy-to-weight ratios, no memory effect and a slow loss of charge when not in use,' according to Wiki pedia.

Lithium ion (Li-Ion) advantages:
-- High performance in cold weather - to 0F - great for winter outdoor use
-- Light weight. You can lift tools powered by Lithium Ion over your head all day.
-- Increased life cycles over NiCad and NiMH, so it keeps going past other batteries
-- more rapid charge times that get you back on the job more quickly

Lithium ion (Li-Ion) disadvantages:
-- less tested than other battery formats - in early stages of development
-- has a shelf life based on life of battery, not related to charge or charge time
-- can sometimes erupt or explode in high heat - hot cars, direct sunlight, etc, or sometimes after tampering. a more dangerous battery than the others
-- permanent damage to battery if stored at too-low discharge level, so be careful and keep these charged well

What battery is right for your power tool decision? Clearly there are many different options, and many different pluses and minuses for each battery type. That's why it's imperative that you come to your purchase prepared with knowledge that will help you make the right decision for your situation.

Plus you are certain to impress the guys at the big box tool depot when you display your knowledge about the different types of batteries and their different merits.

Now you know what to look for - life cycles, run time, volts and Amp-Hours and you know the three major battery types. I hope that with that information you'll be better equipped to make the decision between a NiCD, NiMH or Li-Ion battery!

Garrett French is the Editor for ToolCrib.com.

At www.ToolCrib.com you can find and compare tools, catch up on the latest topics and debates at the power tool blog and save tons of money on power tools by subscribing via rss or email to our power tool deal of the day.

Article Source: http://www.earticlesonline.com/Article/Making-the-Power-Tool-Battery-Decision--NiMH-vs--NiCad-vs--Li-Ion/156660

FEATURED PRODUCTS:

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Zoo Power Sweep Power Head $32.99 POWER SWEEP 228 POWER HEAD (MAX 270GPH) Unique 180 degree rotating head Great for use as a Wave Maker in Marine Tanks! Increases efficiency (i.e. Flow Rate) of Undergravel Filters. Automatic Rotating Feature Creates Greater Surface Agitation Allowing a High Oxygen Exchange Rate. Excellent for Live Aquarium Plant Tanks Comes Complete with Venturi Aerating Feature. Adjustable flow rate 200-270gph POWER SWEEP 226 POWER HEAD (MAX 190GPH) Unique 180 degree rotating head Great for use as a Wave Maker in Marine Tanks! Increases efficiency (i.e. Flow Rate) of Undergravel Filters. Automatic Rotating Feature Creates Greater Surface Agitation Allowing a High Oxygen Exchange Rate. Excellent for Live Aquarium Plant Tanks Comes Complete with Venturi Aerating Feature. Adjustable flow rate 120-190gph POWER SWEEP 212 POWER HEAD (MAX 125GPH), POWER SWEEP 214 POWER HEAD (MAX 160GPH) Zoo Med's Power Sweep powerheads are the first and only rotating powerheads on the market. With a full 60 degree of rotation the Power Sweep replicates natural water currents without the expense of a wave maker. The Power Sweep is fully submersible and can be used alone or in conjunction with an under gravel filter system. They are also cUL listed.

Ml Penguin Power Head $34.99 PENGUIN 660 REVERSE FLOW POWER HEAD (175GPH) 170 GPH Reverse Flow Water Pump with Prefilter Sponge. 10 PER CASE 1.4 POUNDS PENGUIN 660 POWER HEAD (175GPH) 170 GPH Water Pump 10 PER CASE 1.42 POUNDS PENGUIN 550 POWER HEAD (145GPH) 145 GPH Water Pump 10 PER CASE 1.32 POUNDS PENGUIN 1140 POWER HEAD (300GPH) 300 GPH Water Pump 6 PER CASE 1.5 POUNDS

Sebo 9254AM Vacuum Power Head $255 The SEBO 9254AM ET-C Power Head is reliably built, has an L-shaped head and works with C 3.1 and K3 SEBO canister vacuums.

Sebo 9958AM ET-2 Power Head $272 The Sebo 9958AM ET-2 power head offers easy user movement with a 180 degree swivel steering head and ultra-low profile for sweeping under furniture!

Evans Power Center Head 13 Inches $17.1 Evans Power Center Head 13 Inches

Evans Power Center Head 14 Inches $18.24 Evans Power Center Head 14 Inches

Sebo 9259AM Vacuum Power Head $257 Compatible with the C3.1 the SEBO 9259AM ET-2 vacuum power head is extremely reliable and won't crack or stretch.

Sebo 9258AM Vacuum Power Head $241 The SEBO 9258AM ET-1 vacuum power head in white is compatible with the SEBO C3.1 canister vacuum and is extremely powerful.

Sebo 9250AM ET-2 Power Head $272 The Sebo 9250AM ET-2 power head makes it easy to clean under furniture or around corners thanks to an L-shaped design and 180-degree steering ability!

Sebo 9273AM ET-1 Vacuum Power Head $241 The Sebo 9273AM ET-1 vacuum power head features a power switch/indicator that switches off the brush action for gentle, brushless cleaning.

Zoo Med Power Sweep Power Head 226 $30.99 Zoo Med Power Sweep Power Head The Zoo Med Power Sweep Power Head is the first and only rotating power head on the market. This unit comes with a full 60 degree of rotation the Power Sweep that replicates natural water currents without the expense of a wave maker. The Power Sweep is completely submersible, and can be used alone or in conjunction with an under gravel filter system. It is also cUL listed. Features: . Designed to fit all undergravel stems from 3/4" to 1 1/8" . Self-rotating . Helps create greater surface agitation to allow a high oxygen exchange rate . Rotating motion breaks down the surface film of dead bacteria which can inhibit oxygen exchange . Features a Venturi aerating system, adjustable flow rates and all mounting accessories . Keeps reef tanks healthy Item Specifications: Models: 212, 214, 226, 228 Model 212 214 226 228 Flow Rate 125 160 GPH 190 GPH 270 GPH Installation: . Insert the bracket firmly into the slot of the swivel support/cam adapter . Mount the suction cups in the four smaller holes on the bracket . When using a circulation pump it is necessary to mount the pre-filter sponge and the strainer (with plug inserted at the bottom of the strainer) onto the swivel support/cam adapter . Failure to do so may result in clogging of the rotator mechanism . Complete instructions, illustrations and safety precautions are included with this product

Zoo Med Power Sweep Power Head 228 $38.99 Zoo Med Power Sweep Power Head The Zoo Med Power Sweep Power Head is the first and only rotating power head on the market. This unit comes with a full 60 degree of rotation the Power Sweep that replicates natural water currents without the expense of a wave maker. The Power Sweep is completely submersible, and can be used alone or in conjunction with an under gravel filter system. It is also cUL listed. Features: . Designed to fit all undergravel stems from 3/4" to 1 1/8" . Self-rotating . Helps create greater surface agitation to allow a high oxygen exchange rate . Rotating motion breaks down the surface film of dead bacteria which can inhibit oxygen exchange . Features a Venturi aerating system, adjustable flow rates and all mounting accessories . Keeps reef tanks healthy Item Specifications: Models: 212, 214, 226, 228 Model 212 214 226 228 Flow Rate 125 160 GPH 190 GPH 270 GPH Installation: . Insert the bracket firmly into the slot of the swivel support/cam adapter . Mount the suction cups in the four smaller holes on the bracket . When using a circulation pump it is necessary to mount the pre-filter sponge and the strainer (with plug inserted at the bottom of the strainer) onto the swivel support/cam adapter . Failure to do so may result in clogging of the rotator mechanism . Complete instructions, illustrations and safety precautions are included with this product

Altus Nylon Head Harness $11.89 The Head Harness Builds Power And Strength In Neck And Shoulders

Evans Power Center Coated Snare Drum Head $12.95 Offering durability, the Evans Power Center Coated Snare Drum Head is a 10-mil single-ply head that features focus in the center via a 5-mil patch. Unique slots in the 5 inch diameter dot allow it to flex, keeping the head open at the edges. Moved to the underside, the dot is out of the way for brushes.

Evans Power Center Reverse Dot Head 14 Inches $18.24 Evans Power Center Reverse Dot Head 14 Inches

Evans Power Center Reverse Dot Head 13 Inches $18.24 Evans Power Center Reverse Dot Head 13 Inches

Used Tech 21 Power Engine 300 Bass Head $269.99 In Store Used USED TECH 21 POWER ENGINE 300 BASS HEAD

In Store Vintage Vintage Orange Amplification 0R80 Power Head 8.5 @ 394 $2000 In Store Vintage VINTAGE ORANGE AMPLIFICATION 0R80 POWER HEAD 8.5 @ 394

Elation Power Spot 575Ie Dmx Moving Head Fixture With Iris $2999.99 Elation Power Spot 575IE DMX Moving Head Fixture with Iris

Elation Power Spot 250 250-Watt Moving-Head Fixture $1999.95 Elation Power Spot 250 250-Watt Moving-Head Fixture

A great place to shop for Head Power products is Amazon.

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