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I have a number of devices that I need to support off of this 11.1v 6400mah LiPo battery:

Venom 20C 3S 6400mAh 11.1V LiPo Battery with Universal Plug (EC3/Deans/Traxxas/Tamiya)

I'm wanting to support a 5v integrated circuit (raspberry pi) and a 12v Kinect via a usb/AC adapter.

My current idea is to use a 5v step down straight to the lipo for the IC and run the Kinect AC adapter to the lipo through an ac/dc inverter. Will that work?

** EDIT **

I'm concerned about adding an AC inverter to the equation. I'd like to get everything compact but this throws me off a bit. I'm leaning toward an inverter like you'd get for a car cigarette lighter.

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  • \$\begingroup\$ Check out my answer to a similar question here You'll want a similar scheme most likely. \$\endgroup\$ – Brendan Simpson Mar 22 '16 at 16:48
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    \$\begingroup\$ I personally would not use a Lithium battery, if your applications are low power, a NIMH would be better suited I would have thought? my reasoning is, LiPos get damaged if they are drained to low, where as NIMH's are indestructible and can be drained down completely. \$\endgroup\$ – Alex Mar 23 '16 at 19:47
  • \$\begingroup\$ @Alex Great point. The lipo is my drone's battery and I'm repurposing it for this project since the kinect consumes a lot of power. I may switch to NIMH per your suggestion, but that will likely come later down the road. \$\endgroup\$ – Jacksonkr Mar 23 '16 at 20:09
  • \$\begingroup\$ Add something to cut the power from the LIpo when it gets down to , 3.7V per cell, I believe it is, so you don't damage the lipo, and why do you want to use a Lipo? you will also require a Lipo compatible charger, and they aren't cheap. \$\endgroup\$ – Alex Jun 27 '16 at 14:36
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    \$\begingroup\$ A Nimh, Lipos are great batteries, but they really aren't suited to this application. \$\endgroup\$ – Alex Jun 27 '16 at 18:03
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I accomplished this with the following items:

  1. 11.1v 6400mAh 20C LiPo battery
  2. liPo battery voltage alarm
  3. Female cigarette lighter power plug socket
  4. 150 watt battery inverter
  5. Grounded 3 outlet tap

I hooked the items up in order then plugged both of my ac devices into the outlet tap. There's conversion loss going from DC > AC > DC but this was merely a proof of concept. On my next step I will cut out the inverters and run the DC straight using a dc voltage booster & regulator.

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