BlueFire Upgraded Aluminum Alloy Quick Charge 3.0 USB Car Charger Socket & Dual USB Power Outlet with Voltmeter for Car, Boat, Marine, RV, Motorcycle (Silver-Green)

Purchased to hide a voltmeter and smart phone charger in the ash tray of my green 1970 Nova. Then my John Deere charging system /battery started going weird. There is a factory knockout in the dash of my JD D110. Drilled a round hole in that location and it fit perfect with view from the seat, the PTO lever cleared when devices plugged in and the charging location works well with a long cord drapped over to the fender pocket. Wired into the yellow ignition on wire and it's a great way to monitor the battery, alternator output and add device charging. Will be buying more for my boat and Nova. Hopefully won't get stuck on the lake or side of the road from running the battery down too far.

If you are looking for a fast charging USB port this is the one to buy. It's built extremely well and the machined aluminum looks amazing. Installation was easy if you know what you are doing and the precrimped connection and wiring was plenty long enough to tap into my existing wiring harness for power. The built-in meter works well to keep an eye on your cars battery condition as well. I will definitely be ordering more for my other vehicles as well.

Tested voltage against a multimeter on a 12v DC lead acid battery: seems accurate enough. Silicone dust/splash cover is pliable. Should prevent light moisture/ dust ingress. Red LED read out is bright and clear. Housing is sufficient, decals are sharp. For the money, this is a fine product and will add a technical element to my project. I'm building a stand alone 12v power source switched to LED lights in a vehicle interior. This device will allow me to charge my phone and provide a voltage readout to inform me when the battery needs to be hooked up to the charger again. I will be careful to keep the entire rig from exposure to rain, etc. Good unit. Can recommend.

Update: Seller quickly sent me a replacement which seems to work as intended. Great service. Up from 1 star to 4. Quality overall seemed quite good. Easy to install. Initially the volt meter and QC port worked fine, but the 2.4A port never worked. After about a month or so, the QC port no longer works. Volt meter still works fine, so I know it's not an issue with wiring. Still seems like a great product and I hope I just got an outlier. Would love a replacement.

My truck came without a third lighter socket, I have more USB stuff to power (GPS, dash cam, phone(s)) so this socket was a given. The digital readout is nice, I prefer to know what my car systems are doing, and this will be way better than an idiot light. I had to file the teeth off the outside of the lock ring, and remove the rubber cover to get it to fit in the socket shape, but that's a truck design issue, not the socket maker's problem. The wiring was easy, a couple suitcase connections and it was ready to go. I may add another socket like this in the center console for passengers.

This is a pretty neat USB power/voltmeter. I installed it on a sport touring motorcycle, and so far am pretty happy with it. It appears to match the bike's own voltmeter pretty close, though it reads .1 below. A difference that small could be attributed to the wiring, etc, so I'd call it close enough. Upon opening the box, I was annoyed that it looked like the wrong part, as the black plastic cover doesn't look transparent. But I stuck it on 12v, and the voltage reading lit up and became visible beneath the plastic. I like this more than I'd expected, because it basically hides the meter when the bike is off. Not that it would be a huge difference either way, but less busy-ness is always good to me. So if you open the box and think they sent you the version *without* the volt meter, give it power before getting annoyed. Side note...you might wonder why I'd want an outboard digital voltmeter if the bike already has a factory digital one; well, this one is immediately visible at a glance, while my factory meter is on a screen I have to scroll to. Not super important, but I've been broken down enough that I like to keep an eye on as many parameters as possible. Update: with both ports now connected, the meter is pretty hard to see. It would be better if the meter were on top and both USB ports beneath, but that probably wouldn't fit the circular limitations.

Do not listen to those saying that this device is not measuring the voltage accurately. I'm adding the picture that proves it is really precise. Besides, it works great both for QC devices and for "regular" charging devices providing a faster than usual charge. It is highly recommended! The only drawback is that this device's diameter was a little wider than the original cigarette lighter. Perhaps, it could have entered by forcing it a little, but I preferred to modify the hole slightly using a Step Drill.

Product works as it should. Good fit & finish. Excellent pigtails with spade lugs already installed. For all that it rates 5 stars. I liked the idea of having a continuous voltage readout in the back of my RV where this Powers a charging station. However the LED readout is on 24/7. Mine in a cabinet so not annoying, but draws .14 amps 24/7. It’s like a parasitic drain on your battery. I will be replacing it with something I can turn on and off.