If Your Car's 12V Port Is Charging Your Devices Slowly, This Might Be Why

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Unless you're in a bind, it's highly advisable to avoid using public-facing USB ports, but the good news is that you shouldn't need to do so very often these days thanks to all the other options we have. In addition to portable power banks, most modern are equipped with more than one type of charging option, including the classic, reliable 12-volt DC port. Once reserved for cigarette lighters, this connection often includes a flip-top cover, and some vehicles even have more than one. Your vehicle's 12V port gets power from the car's battery (either with the key on or off), but you need an adapter to convert that power for your phone or device.

There are hundreds of 12V-port charging adapters on the market, but if you've noticed that your 12V port is doing a bad job at charging your mobile tech, the issue may have more to do with the adapter you're using than the port itself. Most 12V ports are rated between 10 and 20 amps, but an older (or cheaper) DC adapter may be capped at 10 amps or less. For best results, you'll want to invest in an adapter that will deliver the power you need and comes from a reliable manufacturer. Fortunately, top-shelf brands like Anker and Ugreen have numerous 12V adapters to choose from, many of which include both USB-C and USB-A connections.

Let's not forget that any type of USB adapter is only as good as the USB cable you're plugging into it. Generally speaking, the thin, short USB wires that are hanging around in your junk drawer probably aren't the best tools for the job. Instead, set your sights on a top-rated USB cable (Anker and Ugreen make these, too) that can output between 60 and 100 watts. If the main device you'll be connecting is an iPhone, you'll also want to make sure you're shopping for a Made for iPhone (MFi)-certified cable.

Modern smartphones are able to onboard more power than ever before, and many portable power banks are optimized for fast charging. This is thanks to features like Power Delivery (PD) and Qualcomm's Quick Charge technology. Luckily, many 12V adapters contain these USB-certified hookups, too. Trust us: if you bought a brand-new Apple or Android phone within the last couple of years, you're going to want to use fast-charge tech.

And let's not forget that one can always optimize phone settings to improve battery life. Even simple things like keeping your screen brightness on the lower side or reducing on-screen animations can make a difference in how much charge your iPhone is able to cling to before you need to plug it in. Put all this advice together, and we guarantee that your 12V port will start working better than ever before.