Wiring 1000 Leds from a battery?

Discussion in 'General Electronics Chat' started by samuelma, Oct 25, 2014.

  1. samuelma

    Thread Starter New Member

    Oct 25, 2014
    Hello. First post so sorry if i have overlooked something.

    I'm attempting to make a led panel with 1000 leds wired together and running off a battery/battery pack

    The leds i'm currently looking at has forward voltage 3.2-3.4v if 20ma. My question is what kinda battery pack setup would i need to run 1000 of these for at least 3 hours ideally longer.

    If you can point me to calculators or equations to work this out it would be awesome. Sorry if this is too basic, i may be able to figure it out but its been a heck of a week and its 4am.

    thanks in advance
  2. Wendy


    Mar 24, 2008
    A 12V battery could power 3 per chain.

    That works out to approx 333 chains.

    Each chain is 0.02A. So 333 X 0.02 = 6.7A

    3hrs X 6.7A = 20AH, be sure the battery handle 6.7A