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UltraFire

WF-137 Flashlight Battery Charger 3.6V 3.0V 250mA

Digg(100) ( 8 Reviews)
       
US $10.69
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This is a UltraFire WF-137 Flashlight Battery Charger 3.6V 3.0V 250mA. The battery charger is designed to charge the battery quickly and safely. Perfect fitting and 100% satisfaction guaranteed! It is very convenient to use with high quality and performance. Good choice for you!
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UltraFire WF-137 Flashlight Battery Charger 3.6V 3.0V 250mA
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Product Description

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  • Specifications:

    • Input: 100-240V 50/60Hz
    • Output 1: 3.6V-250mA; 2 x 3.6V-250mA
    • Output 2: 3.0V-250mA; 2 x 3.0V-250mA
    • Cost effective, high efficiency and reliability
    • Built in over voltage, over current and short circuit protection

    UltraFire WF-137 Flashlight Battery Charger 3.6V 3.0V 250mA

    • Cost effective, high efficiency and reliability

    Charger

    • Built in over voltage, over current and short circuit protection

    How Does a Battery Charger Work?

    • Recharging 101 - Batteries work because of the electrochemistry between an anode/negative terminal and a cathode/positive terminal. Some battery chemistries have the property of being chargeable, so that when electrical current is fed into them, the electrochemical discharge reaction reverses itself and the battery "recharges." Only some batteries have the chemistry and construction features that all them to be charged. Also, due to varying battery designs and chemistry, a given battery can only handle a certain voltage or amount of current. For example, the current fed into a lead-acid car battery would be very different from that of a lithium ion mobile phone battery
    • Simple Chargers - The most common type of charging device is the simple charger. Drawing electric current from a wall outlet, this provides either a constant voltage or constant current and will continue to feed it into the battery until unplugged. Usually a transformer of some kind is involved to convert the voltage. For example, North American wall outlets work on the 110-volt standard, which is inappropriate if directly applied to a 12-volt battery. Most charging devices work on this model. They are cheap, but because they never stop feeding in electricity at a set rate and do not stop until unplugged from their power source, they can damage batteries with overcharging if left unattended
    • Trickle Charging - Trickle charging is a variant of the simple charger in that it puts out a constant flow of electricity but at a very low rate. That rate is set to match the particular battery's decay or self-discharge rate. When the battery is completely recharged, the charging therefore continues only at the rate necessary to keep the battery charged and no more. This prevents overcharging and, therefore, degradation or damage to the battery, but makes the charging process very slow.
    • USB Charging - The USB bus on a computer is standardized with a 5-volt power output. Therefore, many computer accessories are designed to use USB outlets for battery charging. Excepting that it uses electricity drawn from a computer instead of directly from a wall outlet, it is similar to other charging methods.
    • Intelligent Charging - These chargers monitor either the time spent recharging, the temperature of the battery or the battery's voltage to determine when to autonomously terminate charging. This protects batteries from damage or degradation due to overcharging. Intelligent charging is becoming a popular charging feature for devices that use lithium ion batteries, as these are relatively expensive and suffer more degradation from overcharging than some other battery types

    Package Included:

    • 1 x UltraFire WF-137 250mA Battery Charger

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Average Customer Review:
  ( 8 Reviews)
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Robbin Gould

Bought this item on

06-24-2011

 
works well
00:00:00 06-24-2011
I have bought a lot of things. They always provide me with good service and high quality items. And this time is no exception. My charger came fast and comes with two batteries that make me very happy. And this charger works well that I have test it when arriving at me. Thanks.
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sharon shohat

Bought this item on

06-21-2011

 
wow
00:00:00 06-21-2011
Work exactly as specified. Would be good if it were twice as powerful as it is. But all in all it is high quality and charges well. For the price it is acceptable.
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Mme RAULIN Céline

Bought this item on

06-10-2011

 
works perfectly
00:00:00 06-10-2011
The batteries that came with the charger are high quality and charges well. This charger is easy to use and works perfectly.
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Eric Lauziere

Bought this item on

06-03-2011

 
great
00:00:00 06-03-2011
I own one of these chargers to use with my 18650 batteries for several of my LED flashlights. I use 'protected' 18650 batteries to ensure proper charging. And it works well with my batteries.
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Patrycjusz Jaworski

Bought this item on

05-26-2011

 
Flashlight Battery Charger
00:00:00 05-26-2011
I bought these from here. Fast shipping and delivery. The batteries and the charger are perfect. I'm using them on a regular basis everyday. They are truly very good. The product is definitely reliable. Thank you.
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leann Evans

Bought this item on

05-19-2011

 
Rechargeable Battery Charger
00:00:00 05-19-2011
I bought one of these, because it sounded a bit more solid than the competing chargers. <br/>It charged the first set of batteries just fine. I let it cool down, put in a second set of batteries, and plugged it in. work well.
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Rocky Russell

Bought this item on

05-11-2011

 
UltraFire Charger
00:00:00 05-11-2011
This is the best product. It fits just fine and charges just fine. I like this product. It charges the battery much faster than the computer cable which used to take overnight. The delivery was also quick. A good buy for sure. Great company with free shipping and inexpensive price!
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Carolyn Krajci

Bought this item on

05-06-2011

 
Flashlight Battery Charger
00:00:00 05-06-2011
Just a great product. Does not over heat, gives you a variety of options.I bought this battery charger based on a friend's suggestion. Thank her. It works!
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