Powering other devices off a 52v Ebike battery

MaxPowers

1 mW
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Aug 29, 2016
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I would like to build a device that would allow me to power things off my Ebike battery.
I have a 14S6P30Q 17.7Ah battery from Em3ev and a DP50V5A Buck Adjustable DC Power Supply. If I feed the 52v into the power supply, I can control the output volts and amps. Would this technically work to power other devices? Couldn't I charge Lipo batteries by powering the lipo charger? 15v at 4A. I could use whatever the output on a power brick says for most devices.
Would this be a viable option for emergency power away from the grid?
 
Yes. Except for you won't power much, for all that long, off a 500w or so bike battery. But hell yeah, it can keep your cell phone or laptop going, and run some led lights.

48v to 12v would be a good choice, since you can get a lot of 12v stuff. I just bought a set of 12v leds intended to light a truck bed, that I plan to put into a camper that has had all the lights stripped out of it. Lots of 12v stuff out there. Once you have 12v, and a cigarette lighter plug, you can easily charge your phone.

And of course, you can run your lipo charger, provided you don't run a too fast charge for the amps the converter puts out. Losses along the way, so figure on 75% of your bike pack makes it to the other batts, maybe less.
 
You know, I had hesitated at first to put a 12v DC-DC converter on my bike -- but once I finally did it, it's proven to be one of my favorite additions. Like Dogman said, you can use it to charge devices, as well as all sorts of LED lights. That's what I've especially appreciated, that it's so easy to get cheap LED lights of all sorts, once you have 12v.

The other thing I'd add that I've really enjoyed having is a little 12v air compressor. Sure, I don't use it all that often, but when I do it sure does beat pumping up a tire with a portable hand pump.
 
Depending on the type of devices you want to run, you may not need a converter. Here is a 48/12v tire pump that will run on anything from 58.8v to under 12v: image.jpegimage.jpeg

I removed it from its plastic housing and I plug it in to the XT-60 charging plug on my battery.
 
WoodlandHills said:
Depending on the type of devices you want to run, you may not need a converter. Here is a 48/12v tire pump that will run on anything from 58.8v to under 12v: View attachment 1

I removed it from its plastic housing and I plug it in to the XT-60 charging plug on my battery.

You directly hit that with 58V? ***EDIT*** "I see now you mention 48/12v"

I sometimes use 4S, 16V and that seems crazy fast for my 12V automotive air compressor?

I love those small DC powered compressors and I'll look around for a 48/12V...
 
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