Cree power

Discussion in 'The Projects Forum' started by Aroman956, Dec 29, 2012.

  1. Aroman956

    Thread Starter New Member

    Dec 29, 2012
    1
    0
    Ok Im planning to start a project where I build a light that runs on battery power this is what I had in mind .. I want to purchase a cree XML-t6 light and power it with a battery ... My first attempt turned out bad I used a c4 streamline led and a RC baterry ... I need help figuring this out I want to run the cree XML-t6 with batteries but I want to last a long time so I'm looking for a big long lasting battery that is portable if u all have any ideas on how Incan accomplish this let me know I need a run time of about 6 hours
     
  2. MrChips

    Moderator

    Oct 2, 2009
    12,449
    3,365
    The specs for a Cree XMLT6 says 3.7-4.5V @ 2.7A.
    If you want this to run for 6 hours you will need at least a 18Ah battery.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,052
    3,244
    The most efficient way to maximize battery life is to use a constant-current switching regulator to power the LEDs. You would then need a battery with about 100 watt-hours of energy (Ah times battery voltage).
     
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