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UltraFire

WF-138A Dual Voltage 900mA 16340 CR123A Li-ion Battery Charger

( 36 Reviews)
 
US $9.99
Color:
White
Qty:
Shipping cost: Free Shipping To Shipping cost:   USD$ 0.00 To United states Via Estimate shipping fee
· Orders over USD$ 20.00 will get free tracking services via air mail

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Product FAQs
  • What is the difference between a battery charger and battery maintainer?
  • A battery charger just charges the battery, a maintainer helps keep the charge in the battery while its not being used or is in storage, they do work good, but you have to have a good battery to start with. Other wise, it won't actually charge a battery up, all it will do is help maintain what voltage the battery already has in it, good luck.

  • How can I tell if my battery charger is working properly?
  • If you have a voltmeter, check voltage before turning on the charger. Then re-check with charger on. You will get 3-5 volts difference, depending on the charger and battery. If it is a small charger, after turning it on, remove a charger clamp and scratch it across the battery post. You will see the sparks. Don't do this after the charger has been on for a while,  as there is the danger of blowing up the battery because of the explosive gases coming of as a result of charging.

  • Will this charger work on my battery even tho its not the same voltage?
  • So long as the output of charger is equal to or higher than the battery's, then it'll be fine.

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