Hello Everyone!
I am in the process of designing a new wearable LED shirt. I’m been thinking about how I’m going to power it, and ordinarily I might use something like this:
https://www.sparkfun.com/products/8483
however, those lithium polymer batteries only have 3.7v, and the LED modules I’m using really would like 5v (they’ll work with 3.7, but they’ll just be dimmer). The other issue with some of those LiPo batteries is that they have small capacity and can’t necessarily handle a huge current draw. Is there any reason you guys could think of for why I wouldn’t/couldn’t/shouldn’t just use something like this:
http://www.amazon.com/Compact-10000mAh- … ords=anker
A portable charging pack? It has a huge capacity, has USB power which makes it pretty easy to deal with, is rated for high current draw (upwards of 2A on some of them), and is 5V at the output. In fact, I have one of these that I use when I travel and I just plugged it into my old LED shirt and it seems to be powering it just fine… I just wanted to run this by everyone here since I’ve never seen this done before and perhaps I’m missing something?
Thank you in advance,
Chris
I wouldn’t take the 10000mAh too seriously. It’s just too small to hold that much charge. There was a discussion here I believe that questioned the real capacity of these chargers. On another note, the current output of these is probably regulated to 1A. But you would need to contact the seller for any details.
Other than that, it would work for your needs. Since you didn’t state what devices or how many LEDs and there specs, we can’t advise you on how much current you would need.
codlink:
I wouldn’t take the 10000mAh too seriously. It’s just too small to hold that much charge. There was a discussion here I believe that questioned the real capacity of these chargers. On another note, the current output of these is probably regulated to 1A. But you would need to contact the seller for any details.
Other than that, it would work for your needs. Since you didn’t state what devices or how many LEDs and there specs, we can’t advise you on how much current you would need.
Thanks for your reply. I wasn’t talking specifically about the one I linked on Amazon, but rather that class/type of device. The capacity will vary like you said, but it’s likely going to be more than a simple 2000mAh LiPoly. Based on my power calculations I think I’m going to need about 2 amps. The external battery pack that I have currently is rated to 2.4A on the output according to the specifications, so I think I should be okay!