Learn how to build a homemade soldering iron using a 12V charger in this simple DIY tutorial. Discover easy methods like using a resistor or battery to create your own soldering iron without needing ...

The Avapow 4,000A Car Battery Jump Starter is on sale for as low as $68, up to a 73% discount on its normal price of $250.

Best car charger: 12V to USB adaptors to keep your phone .juiced ... playing a game but struggle to get any power fed into the battery. This situation is all to do with amperage.

Most chargers ... to-access 12V sockets. With a 32 per cent charge increase, it matched the best on test and the price was reasonable, although it only had a single standard USB socket and ...

However, although the 12V adapter is welcome, it only has a single USB port ... still good enough for a battery top-up on longer journeys. Finished in matt black, the charger is small and discrete.