Qunqi 12V DC Digital Voltmeter + Dual Power Socket Outlet + Cigarette Lighter Three Hole Panel for Boat Car Phone Tablet W/Wire

This item went into my travel trailer. It has a 12 volt outlet, a USB outlet and a battery monitor. The kit included every thing needed to install with fuses in line on the red power wires. It took just a few minutes to install (drilling holes and running the wires). It works as expected and looks good on the wall. I did install a push and hold switch in the hot line for the meter since it isn't necessary for the meter to be always on.

Installed this on a boombox with Sony XSMP1611 6.5-Inch Dual Cone Marine Speakers (Black) and Nobsound® Nobsound® Hifi Mini Bluetooth Music Audio Stereo Receiver Fit for Sound System/ Headphone Amplifier Hifi Stereo Power AMP 30w+30w_ (Silver)Use this battery for power:UPG UBCD5745 Sealed Lead Acid BatteriesGives me the voltage info so I know when the battery is getting low, allows me to charge my phone/tablet, and the aux cigarette lighter socket allows for universal charging/power for things like a small air pump.Highly recommend.

Not yet installed but looks good and all is there. I like the fact it comes with all the hardware needed to install. I plan on installing in my RV to make access to the two batteries from the coach. The previous owner disconnected the only 12V in the coach and I wanted to charge cell phones and flashlights. as well as use a 12V inverter to run whatever inside. The RV only has a light bar as a charge indicator and I want to know the actual voltage of the battery bank. This was a find as it is supposed to do just that. I will update after I install.

Unless u want to put new connectors on all the wires. The ones it comes with must be re tightened every few few days then they will not hold any connection. No matter what u do.except put on new ones

Awesome! Can't wait to install it in my PUP. Dry hooked it up to my battery and found that the meter actually uses 30 mA and when a phone is hooked up to either usb socket it usesabout 110 mA to charge. I can only assume that the 1A and 2.1A come into play when this is hooked up to a running motor with a charging system. The wires supplied are about 18" long with connectors already attached, all hardware was supplied for mounting.

Easy installation, great function and design! The only thing I would change (and did) is I added a toggle switch tot eh circuit in order to be able to turn it off. No phantom loads when not in use, and no glow from the LED at night when it isn't needed. Other than that, It is awesome! I would certainly purchase this again!

Was happy to have the features in the easy to mount set up until I tracked a short down to the usb charger. It worked for several months charging phone and speaker. No other problems so I will purchase another usb charger for it.

I didn't use the mounting strip that came with it, but works great. I took my current plate and just cut a hole with my dremel for the 3rd piece.Outside of that, fairly easy to install. Each part work as designed.Nit-picky complaint is that the LED voltmeter is red and the light for the USB is blue, but I'm a perfectionist when it comes to stuff like that.