Car Charger Adapter, 4-Port Cigarette Lighter USB Charger Adapter with Voltmeter PD 3.0 & QC 3.0 Car USB Charger Multi Port Accessories Fast Charging for iPhone, Samsung, iPad & Phone Tablets

I was surprised to find how well this product works. It not only displays the voltage output of my alternator but it does it in increments that change as the car warms up and the different utilities are run. With this product I found out that my alternator was not bad after all. This was a great purchase to keep me from spending $1000 at an auto repair shop when they tell me that my alternator is bad. It was just my battery terminals. I cleaned them. Now it's all good and I can keep my eye on it now, from now on.

It does a terrific job of being a transformer, has enough USB ports for my needs, and I like that it has an LED display. Just ideal for my iPhone and iPad.

Works great and has tons of ports

I have an older car and this car charger with light and four ports is an excellent and very practical accessory. It plugs in easily and fits securely without getting loose while driving. The ports are especially helpful, allowing me to charge devices at the same time, which is perfect for travel or daily commuting. The built-in light is a great added feature, making it easy to find and use at night without distraction. Charging speed is efficient, and it has worked reliably with multiple devices. Overall, this is a high-quality, convenient charger that makes staying powered on the road simple and stress-free.

Tells the battery voltage to one decimal place and charges my devices. More accurate than the dial on my dash.

Purchased this to replace the old, two-port adapter that works intermittently. This unit has a great sales price and it looks good. Easy to use and the display/function is easy to understand. This fit my 2005 Honda Accord without any issue. With my older unit, I never know if the adapter is pushed in or not. This new unit will light up when it is plugged in properly. The charging speed is acceptable (I really have no way to compare).

Pros: penty of charge ports Displays car battery voltage before you turn the car on (if you has a 'always on' 12v port). When car is running it displays how much voltage your car's alternator is producing. This can be handy to see if the car battery is going bad, the alternator is starting to fail, or if you have a bad connection out of the 12v port. The high voltage port is charging my phone fast. Cons: the front plastic is sometimes loosening on one of the 3 I use. Not bad odds, and I'll eventually add a drop of glue Overall this is a great way to spend your money over going to a mobile phone store or taking your chances with a gas station option

Voltage display doesnt work