Trying to stay cool on a hot day and the power is out? I got this 12V battery pack and 12V fan more than 10 years ago, and I’m still happy to have it.

Do you need a UPS that can run your computer gear during all day power outages? I put together a homemade double conversion online UPS using off the shelf components, and now when the power goes out, my computer doesn’t skip a beat, even if the power is off for an hour or two… or [...]