Battery for 5050 RGB LED strip on bike

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trance728
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Battery for 5050 RGB LED strip on bike

Post by trance728 » Mon Jul 28, 2014 2:48 pm

I know this topic has been talked about in the past but I wasn't able to get a clear idea of what I should be getting.

I wrapped my bike with a 5m RGB 5050 300xLED strip. Rating says 12v 6amp draw on full. I have the 44 key remote and plan on using it to flash through the colors on a dimmer setting.

What is the best/cheapest option for a battery to power this. Since it's on a bike, size and weight isn't a huge problem but would like to keep it under 20lbs. If there was an option to power it for the whole week that would be great, if not I can figure out some way to recharge it. This is also only for the burn so I don't care the life of the battery and SLA's are fine. I've also read that I can power it using 8 Duracell AA's, but how long would they even last?

Thanks for any help or insight.

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Captain Goddammit
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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Mon Jul 28, 2014 3:28 pm

Are you sure it's 6 amps?! That's a hell of a lot for LEDs! 72 watts... in LED terms, that's a huge amount of power. Is it really 6 amps at 12 volts?
You'll have to either bring a lot of batteries or have a good way of charging at a fairly high rate. A full-size deep cycle RV or marine battery that weighs twice what you wanted will generally be rated around 110 aH, and you have about 50 or 60 of those actually usable. If we assume 60 aH, and half your stated power draw because you had the lights dimmed, you'd theoretically have about 20 hours running time.
Riding lawn mower or motorcycle batteries are an option, they're relatively small and cheap, but if you're really running that much wattage they won't last long.
Last edited by Captain Goddammit on Mon Jul 28, 2014 3:37 pm, edited 1 time in total.
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trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Mon Jul 28, 2014 3:37 pm

It would be pulling 6 amps at full brightness with all the channels active making it white. I won't be having it on white at full brightness but thought those specs should be mentioned. And the 5050 LED's are super bright and do eat up quite a bit of power.

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Captain Goddammit
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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Mon Jul 28, 2014 3:45 pm

Well, that's a lot of power for bike lighting, but hey it's Burning Man, wretched excess is good, so I'll focus more on how it could be done rather than saying "that's too much, it won't work".

Do you have power at camp for a battery charger?
Last edited by Captain Goddammit on Mon Jul 28, 2014 3:46 pm, edited 1 time in total.
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trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Mon Jul 28, 2014 3:46 pm

Didn't get it from here, but they have the consumption listed. https://www.torchstar.biz/detail.php?id=27

The controller says it outputs 2A to each color, so If I only ever have it on Red, Green, or Blue it will only consume 2 amps at full brightness.

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Mon Jul 28, 2014 3:47 pm

I don't currently have a way to recharge, waiting to figure out what I'll be using before figuring out how I'm going to charge it.

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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Mon Jul 28, 2014 3:56 pm

I've got LED rope light around the perimeter of my M/V (as seen in my pic) and it's only 17 watts for 16 feet, about a watt per foot. Without a way to charge, maybe that stuff is better. That's still not even 2 amps for the length you're running.
Basically, you'll have to look at the amp-hour (aH) rating of whatever batteries you look at, figure about half of it is actually usable, and if you figure drawing 2 amps, that should give you a rough ballpark estimate of how much running time you'll get. A 20 aH battery ought to yield at least 10 amps for an hour before it's half dead and weak, or one amp for ten hours, or - your 2 amps for 5 hours, which translates to one or possibly two nights on the playa.
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trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Tue Jul 29, 2014 5:23 pm

So I got around to hooking up a multimeter to the strip to see what kind of amps the entire strip was pulling. Turns out at the brightest setting on whit I was getting 1.7 amps, far from the 6 amps that was listed so I'm not sure what that rating was for. On the dimmest single color of red blue or green it was pulling .15 amps. The setting I plan to use looks to be pulling on average about .85 amps.

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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Tue Jul 29, 2014 5:30 pm

Well that sounds much more realistic!
No amount of theoretical battery math will give you real world data as testing your setup will.
I say hook it up, leave it on and see what happens. It's impossible to predict exactly how far down you can get away with running a battery any other way.
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trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Tue Jul 29, 2014 5:34 pm

Yea real world testing is always the way to go. I'm going to try powering it off 8 x rechargeable AA's and see how long things last, I'll see what their total amps are before connecting. Seem's like my easiest testing right now since I have them lying around.

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Re: Battery for 5050 RGB LED strip on bike

Post by Pootzen » Tue Jul 29, 2014 7:26 pm

trance728 wrote:So I got around to hooking up a multimeter to the strip to see what kind of amps the entire strip was pulling. Turns out at the brightest setting on whit I was getting 1.7 amps, far from the 6 amps that was listed so I'm not sure what that rating was for. On the dimmest single color of red blue or green it was pulling .15 amps. The setting I plan to use looks to be pulling on average about .85 amps.
Sounds right - my LEDs would only run red or green by the end of the night on 8 AA batteries hooked up to run at 12v.

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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Tue Jul 29, 2014 8:03 pm

I'd go with 8 D cells instead. Buy some of those eleventy-zillion packs at Costco.
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Re: Battery for 5050 RGB LED strip on bike

Post by truckstop » Tue Jul 29, 2014 8:55 pm

I've had those lights on my bike for a couple years just using a 12v sealed battery, like the kind they sell for emergency lighting. this year I found these and they are made exactly for that, plug and play. reviews say about 2 hours of light for 5M of lights.


trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Tue Jul 29, 2014 9:30 pm

truckstop wrote:I've had those lights on my bike for a couple years just using a 12v sealed battery, like the kind they sell for emergency lighting. this year I found these and they are made exactly for that, plug and play. reviews say about 2 hours of light for 5M of lights.
How did the sealed battery work out for you and what mah was it? Any reason for moving to the lithium battery pack, 2 hours isnt long?
Captain Goddammit wrote:I'd go with 8 D cells instead. Buy some of those eleventy-zillion packs at Costco.
The D cell batteries are an interesting idea, looks like theyre rated around 14-15aH, obviously not having them rechargeable would require me to buy a bunch, but Costco looks to have 16 packs for $15 on Duracell. I'll have to go into a store to see what their brand rating and cost is. At that rating they should easily last a night or two on a set depending on how long I have them on.

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Tue Jul 29, 2014 10:05 pm

After researching more, I think those numbers I listed for the D's are probably not accurate for this usage. I read this on a forum "Stay away from energizer, duracell, etc in this case, as they are just selling a AA battery in a D package, a 2500 mAh D cell. Yuck." And I actually tested a Duracell D that I had in a flash light, not sure how old the battery is but its only showing about 1500mAh, so I think this could very well be an accurate statement, Something about their high mAh ratings are only for low drawing devices, like 25mA.

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Thu Jul 31, 2014 11:41 am

Tested the lights last night with the 8 x rechargeable AA's and here are the results:

I set them to full brightness to flash through 7 colors.

Stayed bright and on that mode for 2 hours 20 minutes then only went Red, Green, and Blue for another 6 minutes, I guess the blue uses more power. After that its flashed Red and Green still pretty bright for another hour until I decided that the Green was brighter and I like it more than Red so I set it to only Green. They stayed on all through the night and dimmed a little but managed to get another 9 hours before I shut if off.

I'm not planning on going full brightness on the playa so it's good to know even if I did I would still be able to have them on more than I would in a night on a set of batteries. I don't know if its a major capacity or discharge difference between rechargeable NIMH and disposable alkaline batteries, and I'm hoping not.

My next step is to recharge them and then set the lights to the dimmest setting to flash 7 colors and see how long everything goes.

Stay Tuned

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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Thu Jul 31, 2014 11:50 am

I didn't know that about the D batteries not really being any more powerful than AAs.
Out of curiosity I think I'll do a few performance tests myself!
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trance728
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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Thu Jul 31, 2014 11:52 am

Captain Goddammit wrote:I didn't know that about the D batteries not really being any more powerful than AAs.
Out of curiosity I think I'll do a few performance tests myself!
That's just what I came across, so I don't know how accurate it is, although everything on the internet is true, so.. If you do some testing, please share with the group.

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Re: Battery for 5050 RGB LED strip on bike

Post by maladroit » Thu Jul 31, 2014 12:54 pm

It's a complete myth. Maybe a dollar store would sell off brand D cells with less capacity. Or maybe if you get a rechargeable battery that's a possibility.

But if you go get a decent set of alkaline D cells, you're getting 15 amp-hours no problem. I've used them for LED power packs and portable speaker systems.

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Thu Jul 31, 2014 12:58 pm

maladroit wrote:It's a complete myth. Maybe a dollar store would sell off brand D cells with less capacity. Or maybe if you get a rechargeable battery that's a possibility.

But if you go get a decent set of alkaline D cells, you're getting 15 amp-hours no problem. I've used them for LED power packs and portable speaker systems.
Any idea why the mah capacity is listed in rechargeables but not on the disposable ones?

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Re: Battery for 5050 RGB LED strip on bike

Post by usurpedus » Mon Aug 04, 2014 11:04 pm

sounds like a cool project.. can you post where you got your lights from? or something similar..

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Sat Aug 09, 2014 9:31 am

usurpedus wrote:sounds like a cool project.. can you post where you got your lights from? or something similar..
Got them off ebay from a seller in California, got to me in 2 days

http://www.ebay.com/itm/321373936535?ss ... 1497.l2649

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Re: Battery for 5050 RGB LED strip on bike

Post by concepts84 » Sat Aug 09, 2014 9:35 pm

Youtube claims 16 hours on 8 AA

[media]

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Re: Battery for 5050 RGB LED strip on bike

Post by Lion » Sun Aug 10, 2014 11:39 am

Hey there!!! I also have the same lights as you only they give off 5amps. but I was curious if 8 AA batteries would handle that strip light with a sound sensitive ir remote control with it?

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Re: Battery for 5050 RGB LED strip on bike

Post by trance728 » Thu Aug 14, 2014 2:20 pm

Lion wrote:Hey there!!! I also have the same lights as you only they give off 5amps. but I was curious if 8 AA batteries would handle that strip light with a sound sensitive ir remote control with it?
The 8AA's would power it just fine, the sound sensitivity might actually help them last longer if its flashing off and on.

About the youtube comment above of 16 hours, that may be the upper limit keeping it on a single color like red at a lower brightness.

This is what I just got in the mail today:

Figured I would try and charge it throughout the week at the solar camp or a friends generator. I will be bringing some AA's for backup though.

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Re: Battery for 5050 RGB LED strip on bike

Post by usurpedus » Tue Dec 02, 2014 11:39 pm

how did your setup end up working out?

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Re: Battery for 5050 RGB LED strip on bike

Post by Sham » Sat May 16, 2015 6:39 am

This is a great post that was bumped by a spammer. I zapped the spammer but think this is worth the bump! 8)

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Re: Battery for 5050 RGB LED strip on bike

Post by Molotov » Sat May 16, 2015 11:54 am

I have had success with using Black and Decker 12 volt rechargeable drill batteries, which will power my LEDs and glo wires for several nights. I run my genset in the daytime for a few hours during the heat of the day and charge them back up if needed-but I have three of the drill batteries. (I use an 18 volt drill now-so they just lay about) They have two top terminals and standard push-on spade lugs fit. I have also made an adapter for a cigarette lighter plug and my 12volt jump starter pack will pretty much power them every night for the week. It's just not very portable for bike use.

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Re: Battery for 5050 RGB LED strip on bike

Post by Luigi » Sun May 17, 2015 2:27 pm

I am with the sheik - going to use a milwaukee M12 li-ion battery with their power port for my bike. The power port accepts the battery and has a power plug, usb and battery indicator. I have all the pieces and will be assembling it soon. Went with that because I use M-12 tools and have a bunch of batteries and a car charger.
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Re: Battery for 5050 RGB LED strip on bike

Post by Captain Goddammit » Sun May 17, 2015 2:31 pm

I gotta say, that's a brilliant idea for bike lighting power especially if you already have or would like to have cordless tools.
Most of the expensive parts of my Mutant Vehicle's electric system are things I can use elsewhere in the default world.
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