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ultrafire 18650 battery

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ultrafire 18650 battery Customers Reviews

  • Excellent 4-channel charger for 18650 batteries

    posted by puterfixer

    This is a well-built charger, with excellent finish and functional design, well ventilated. It has 4 independent charging circuits for the 4 charging slots, and it accomodates various Li-Ion rechargeable batteries. It monitors the charging level for each of them and stops when they are full, without risking overcharging them. An indicator LED will turn from red to green for each slot when charging is complete. The USB port is a bonus, although using it disables two of the charging slots. Works with any 12V 1A power adapter.
    I'm starting a collection of power adapters with the wrong kind of plug for my country :-)
    Excellent fast charger with 4 independent channels for Li-Ion rechargeable batteries.
  • The first impression is good

    posted by vat74

    Taps for installation on board.High capacityIndividual cases for a couple of batteriesConclusions insulated heat-shrink tube.
    Batteries chose specifically tapped for installation on board. Immediately set them in place. Now my screwdriver got a second life. It now remains to check how long the battery will last update.
    The only battery soldered. The first impression is good, after tests on the actual load will see its potential.
  • Works well

    posted by LOUISSSSS

    Holds charge for very long. Powers up my P7 flashlight very well. Gives over 1 hour of usage on high. Both batteries came in good condition. Fits very well in the ultrafire wf-139 charger.
    Cheap!
    Very good batteries so far. No problems at all. How should these batteries be stored when not in use for months at a time? At what charge should they be stored at?
    Will buy more of when needed
  • Excellent Purchase!

    posted by intelboy15

    1) It is a 2400mAh capacity battery.2) 2 batteries (@ ~$5 for one)3) PCB protection against overvoltage, overdischarge, and overcharge4) Build quality on par with major brand names
    I'll be using it to build a battery pack for a old cordless drill since I can't buy any Li-Ion battery packs for the drill.

    The larger size isn't much of a hamper, although it is much larger than I had expected (roughly double the volume of that of a standard AA). The high capacity is great and it has a PCB.

    I'm sure it'll be a great buy for those high-drain CREE and Luxeon LED lights (if you can get one to fit).
    Cheaper than any retail or online store in the U.S. for the same brand and quality battery. PCB equipped for about $5 a battery.

    Buy it if you need these 18650 batteries or want to build a battery pack out of them.
  • Good charger for the price

    posted by hondagourou

    Nice case, slim and efficient.
    Come with a power cord. (look very cheap but i change it with a bettter one)
    The diode show the state of use. (charging and done)
    4.2V end of charge. Don't check the current or charging voltage.
    It may be better but do the job very well.
    Single cell.
    Very good for the price. Match with the cell from the same manifacturer. The led flash to green to show you the charger check the state of charge wile charging.

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