DX » Community » Reviews » UltraFire T6 Water Resistant XML-T6 3-Mode 900-Lumen White LED Bike Light with Battery Pack Set
5.0
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  • Good for this price

    posted by tklim on 08/17/2013
    7

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:

    Very bright, narrow spot, can illuminate objects at the distance of 100m or more.

    Cons:

    - Charger: it's not a charger - only constant voltage power adapter with resistor-based current limiting
    - No battery level indicator: red light turns on only at 1-2% of battery level
    - Overheating at full power without moving

    OtherThoughts:

    Checked the power consumption, absolutely not as declared:
    High mode: 1,55A x 3V =4,65W (DC-DC efficiency: 78%)
    Low mode: 0,55A x 2,4V =1,35W (DC-DC efficiency: 61%)
    So, maximum luminous flux according to datasheet is about 560LM

    Bottomline:

    quality product for it's price

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