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Can I power a LED array with LiPo? Answered

I want to power an led array of 10W LEDs connected in parallel with a LiPo. They are rated 12V and 1050A. So thought of connecting them to 5200mAh LiPo battery so that they all will get 12V and each will get less than 1050A. Can I do like this? Please suggest a cheap method to do this.

Thanks

Edit1: Thanks for all the answers.
1) The link for LED: http://www.ebay.in/itm/5-PCS-ACTUAL-10W-WHITE-LIGHT-LED-SMD-BEAD-CHIPS-BULB-LIGHT-LAMP-DC-9-12V-/281779856264?_trksid=p2054897.l4275

2)The battery is actually 11.2V not 12V, my bad.

3) I know I have to use individual drivers for all of them but I'm just trying out to find out a cheap alternative.

4) I want to make an array of 10 10W LEDs so thought maybe they will divide the current by themselves.

Comments

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iceng
iceng

5 years ago

I = W / V = 10W / 12V = 0.833A = 833ma not 1050A.

Please show the LED URL so we can make sense of your question.

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Wired_Mist
Wired_Mist

Answer 5 years ago

+1

You can slightly overdrive them so that is used as an excuse to give misleading information. (Technically this is a 9Watt led; there are 9-1W leds inside)

1050ma is the upper limit of what they can handle but 850ma is a more reasonable Current to drive them at.

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steveastrouk
steveastrouk

5 years ago

No. You can't put LEDs in parallel with the source, they need a constant current driver.

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Wired_Mist
Wired_Mist

Answer 5 years ago

Yeah sorry bud; it doesn't work that way...

the 5200-mah rating of the Li-po refers to the Capacity of the Battery, not what current it will deliver.

Like Steve said, you need a constant current driver (or at minimum a Beefy resistor) to drive the Led's.

Btw, I'm Curious were you found a 12V Li-po, Can you provide a link to both it and the Led's you are using? we need much more Info before you can get a good Answer :)

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AlekhK
AlekhK

Answer 5 years ago

The resistor method is what I had in mind and it saves a lot of money. Can you please elaborate on that part?

Thanks

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Wired_Mist
Wired_Mist

Answer 5 years ago

http://led.linear1.org/1led.wiz is a good calculator for led resistors.

a 2ohm 2watt resistor should work,

** but again, for Led's of this wattage it's still not a great Idea ! **

here's a link for some Cheap Regulators, a LM317 in Constant Current mode will safely Drive the Leds for a long time without burning them out.

http://www.reuk.co.uk/LM317-Current-Calculator.htm Has the Schematic and a Calculator to find the Resistor

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Downunder35m
Downunder35m

5 years ago

People buy big LED's dirt cheap off Ebay and never do their homework on how to use them :(
A good 10W LED with a good driver can set you back 30$ and more - there is a reason for these prices ;)