Ghetto UPS

Ever felt the need to “Tim Taylor” your UPS and get some “More Power” to give yourself some more uptime during your next power outage? Well here’s your solution. the “DIY or Ghetto” UPS. Dan over at Dans Data has whipped up a Dual Conversion UPS from a DC power supply a power inverter and 1 or more Car Batteries. Just as a warning the contents of automotive batteries are toxic and were not meant to be used in your home so take care when performing this hack.

This hack allows you to continually charge the car battery while the power is on while the car battery powers your computer, monitor, etc. When the power cuts the battery takes over with no interruption at all allowing you to shut down your system safely or finish your game of Half-Life, etc. You can use more powerful or more batteries to give yourself more “outage power” as you see fit.

Check out the full article with Dan’s recommendations for inverters batteries and power supplies at

Also read my reccomendations by “Continuing” to read this article.

Thanks to hackaday for the link

A couple pieces of advice that i’d like to add to this article coming from my automotive experience (I used to work at an Oil/Lube/Tire place)

1. If you can afford to spend a little bit more get a “Deep Cycle” battery. They tend to perform a little bit better and can survive being completely drained (although it’s still not recommended) they are also often sealed a bit better as they are often designed for marine applications.

2. Be very careful with automotive batteries. The contents are liquid and can be dangerous if handled incorrectly or spilled. (Sometimes even the fumes can cause trouble. Keep in a well ventilated area.)

3. In addition to any fuses built into the inverter or power supply I would invest in some kind of dedicated inline fuse. (Just to cover your ass)

4. Do Not keep automotive batteries on a cement floor as this can cause them to drain more quickly (some people say this is an urban myth and others say it’s not the cement/concrete itself but the temeperature difference between the concrete and the air in the room)

If anyone gets some crazy system set up using this send me some pictures and I’ll put them up here (send all pictures to )

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I'm a self labeled Nerd who enjoys Playing Video Games, restoring classic muscle cars (i have a 65' Mustang in the works) , Running Big Data Clusters, Tattoos, Working on System Automation, Riding and customizing Motorcycles, and writing python Code. I'm an SRE with DemonWare/Activision Specializing in Big Data/Hadoop operations but all opinions and views expressed on this site are solely my own.