There is also a built-in 72-hour safety timer, which protects ... on our list is DieHard's smart battery charger/maintainer. Designed for both 6- and 12-volt batteries, this is a fully automatic ...

Hack a Day favorite [Mikey Sklar] is back with a new project. Mini-D is a battery desulfator. If a 12V lead-acid battery sits with a voltage below 12.3V, sulfur crystals will begin to form on the ...

Fully charged, a 12V battery offers up 12.73 volts ... However, even if you’re a full-timer, you shouldn’t need a new battery every season or even each year. Most batteries—when properly ...

With a 555 on the BOM, you never know what you’re going to get. With 40 of the versatile timer chips in a build, you might just get something completely unexpected, like this 555-based eight-bit ...

Digital timers keep track of timing; to trigger an action, to start timing once triggered by an action, or both. Some products are programmable while others may be fixed at a set internal time and ...

You can even get a special charger with a timer to only provide power at certain times ... You will also have to replace your EV’s 12-volt battery every five to seven years. It is used to power the ...

A car battery charger will make sure you can start your car if you're not using for a while. If you’re going to be sto ...

The pistol-styled Clarke includes a 2Ah battery (plus a USB socket) as well as the 12V cable, which adds to the price. It was easy enough to use with its lockable trigger and produced some good ...

DIY projects often become a catalyst for acquiring new gear, and gear can be an integral component for getting these projects across the line. Whether you’re mowing your yard, painting your house, or ...

The only real drawback is that the connection is only by crocodile clips, which means it has to be attached directly to the battery. The kit is also supplied with both a 12v socket and battery clips.

Most of us — casual users and enthusiasts alike — are forever searching for smartphones with the longest battery life. And while fast charging keeps us topped up every day, the absence of ...

I’m one of the consumer PC experts at PCMag, with a particular love for PC gaming. I've played games on my computer for as long as I can remember, which eventually (as it does for many) led me ...