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  • Excellent for charging and using a single Lithium Ion 18650 battery

    posted by racitup on 01/11/2018

    Impression:Cheap,needs attention;

    27
    Super-cheap way to charge and use 18650 LiIon cells. Just put in a LiIon cell and plug into your Android micro-usb phone charger. Uses an MP3401A chip.
    I would personally recommend SKU: 400079 over this though.
    Pros:
    - Beautifully engineered metal case
    - Exceptional value for money
    - Cheap and easy way to use high capacity LiIon cells
    - 5V in, 5V out, protects the battery
    - Charge and discharge at about 0.7A
    Cons:
    - Is not long enough for protected (button top, longer) LiIon cells (see Youtube "The Unwanted Guy")
    - Very tight fit for unprotected cell, may require some 'fiddling' so that negative wire runs along the edge on the outside (not underneath the cell) of the plastic holder
    - Micro USB connector not very good quality, has to be fully pushed in and easy to dislodge
    - Youtube video of very similar chip on same board overheating ("HolyCrapski")
    - Be very careful when charging small capacity batteries (1500mAh or less) and make sure they don't overheat!
    • Excellent for charging and using a single Lithium Ion 18650 battery

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