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Installing LED lights in Phantoms

Discussion in 'Pro/Adv Discussion' started by Nigel Yong, Feb 19, 2016.

  1. Nigel Yong

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    Hi,

    Would like to find out if anyone has issues e.g. shorter battery life span, issues related to battery etc. after installing LED lights on their Phantoms?

    Thanks Phantom LED light.jpg .
     
  2. alokbhargava

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    You can work out reduction in flying times easily by computing the volt amp hrs consumed by the LED lights. Or give me the LED ratings, I can work out approx reduction in flying minutes.
     
  3. Nigel Yong

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    Unfortunately, I do not have the LED rating or the technical specs and neither is the seller. It comes with 1 LED light and 1 Reduction Voltage Module. Was informed it's low power consumption.
     
  4. alokbhargava

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    We can't calculate any values without having technical specs of the lamp.
     
  5. Mark The Droner

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    I have noticed nothing different. I have a headlamp on my Phantom just like the photo. I've read the battery drain is negligible when adding LED lights. I haven't noticed any difference. However, the lamp does get awfully hot, so it's definitely consuming some power!
     
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  6. rene van der meer

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    A simple multimeter would do. Just measure the voltage and current.
     
  7. Nigel Yong

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    The calculation is based on the battery life span, reduction time of each flight or other information pertaining to the battery?
     
  8. maxwell smart

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    I run LEDs on my P2, cant tell any difference in flight time.
     
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  9. N017RW

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    Yea, there's so many variables that a few LEDs don't play a meaningful role in overall flight times.

    LEDs are current controlled devices. A good rule of thumb is about 20ma per LED (just an estimate) plus the step-down device used.
     
  10. Nigel Yong

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    Hi all, many thanks for all your responses and information.
     
  11. Mark The Droner

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    That head lamp led actually has 24 LEDs on it if it's like mine.

    Just sayin'
     
  12. alokbhargava

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    Power LEDs consume more than 20 mA to generate a bright light. If we assume each needs 40 mA, your lamp consumes 40*24= 960 mA that is almost 1 Amp at about 1.5 V, consuming 2.5 watts. Voltage step down circuit may have efficiency of say 60%, so your consumption is about 2.5/0.6 = 4.2W

    It will consume 4.2 * 0.3 = 1.26 WHr in 20 minutes
    Battery is rated for 4.8*15.2 = 72.96 WHr

    LED load % = 1.26/72.96= 1.73% which is insignificant

    In short adding that LED lamp will shorten flight time by 1.73% = 0.4 minutes

    It will not be noticeable at all.
     
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  13. Mark The Droner

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    Well explained - thank-you.
     
  14. Nigel Yong

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    Fantastic information :blush:
     
  15. Nigel Yong

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    Thank you.