[Upgraded Version] Dual QC3.0 Cigarette Lighter Socket Splitter, CHGeek 250W Waterproof 12V Dual USB Charger Power Adapter Outlet with Aluminum Dual USB Ports and LED Display for Car Boat Marine,etc

Installed this into my RV. Love it, has a switch to turn off (no parasitic drain when off). I can monitor my voltage, charge my phones, and can plug other 12V accessories in.

This is installed in a Little Guy Max teardrop trailer, next to the light switches which provide power from a battery charged from a set of solar panels This made it easy to wire, I used "Self-Stripping Quick Splice" connectors, which can be seen in the picture, to the existing wires to connect to the outlet switch wiring. It was very easy to install and provides both off-the-grid USB and 12V accessory while the voltage display provides both an indication that the power switch is on as well as battery level. The use of the plastic retaining nuts as well as the supplied screws make the adapter very solid.The only problem I had is that this is installed on a half inch thick panel, and the power switch does not reach through it which means that the plastic retaining nut cannot be used on the back. The USB and 12V accessory adapters are both much longer and the retaining nuts work fine from the back of the panel. To address this I drilled the three 1-1/8" holes, but for the power switch I created a ledge or shoulder on the front of the hole, wide enough to fit the diameter of the retaining nut, and deep enough so that the retaining nut would sit flush with the front panel. This shoulder is really just the start of another hole, about 1-1/2" in diameter, but only about 1/8" deep so that the rest of the power switch would fit tightly in the rest of the 1-1/8" hole. In hindsight it would have been easier to drill the wide, retainer nut diameter sized, hole instead of just a shoulder. I like that the barrel of the power switch is tightly held by the 1-1/8" hole, but it was a bit difficult to build the shoulder.

I ditched the switch. I used better ones with a smaller form factor and I tossed the plate. I cannot say the switch worked. The plate is just a plate.I installed the 12 volt socket but have not had the opportunity to test it. If it does not work. I'll update this. No news is good news.Now the USB port. I got over 1.5 amps according to my phone and tablet apps at the same time. The amperage in was almost the same as out, it's very efficient. I was impressed.The usb was hard to insert at first but after a few cycles it broke in. Leading me to have some concern about life cycles.I picked this item because of the voltage meter in the USB. The whole cost at time of purchase was the same as just the USB port of the same region of origin.The voltmeter is accurate most of the time. If a usb is not plugged in it will randomly jump 0.2-0.3 volts up and then go back down. My inline meter plugged into the power supply did not reflect these readings so this one you have to look at for about 5 seconds to see what the most common reading is. Which is the most accurate reading.All in all. Not disappointed in the quality. The metal body is nice.

The updated version of these grouped power components addresses problems that would have kept me from buying more.The power button is now solidly fixed in the assembly and does not include an LED indicator. The previous version had the indicator illuminating for me in the OFF position! I am happy to have no indicator on the switch since the volt meter and USB socket illuminate when the switch is on anyway, so why waste some ma's on a redundant LED. The switch does now have a rubber boot on it now too which will definitely help to prevent water damage. And the connectors on the backside are no longer covered by a long shell that made them hard to access before.I love the combined voltmeter and dual USB sockets! It is so much nicer to to have all 4 functional components available in a 3 component layout. This does cost more, but provides what I want.

installed in our classic motorhome to replace the original 12v cigarette lighter. only a couple of minor hiccups and thoughts for other people considering the product.1. the three features can be put in any order you like as long as you follow the wiring scheme.2. the power switch is much shorter than the USB and 12v sockets - i have a very thick dash and the threads didn't reach the back of the drilled hole, so i super-glued the switch to the mounting plate. easy modification.3. the nuts on the back of the sockets are plastic and can strip fairly easily - no need to over tighten.4. i used a 1.25-inch hole saw, which is 1/8-inch smaller than specified in the instructional video, but that was a perfect size.glad to have found this - quick shipping and what seems to me to be of good quality.

The media could not be loaded.  Arrived & installed today. The set up came fully assembled and ready to go. I did take it apart and moved the USB outlet to the center, just a matter of preference. I have an 05 Mustang and they didn't come with USB at the time but in today world it's a must. This dual QC3.0 fits my needs. I also like the fact you can turn it off at will. I put it in the center console which required some drilling but it looks great. If you didn't know you'd think it came with the car. Very happy so far, thank you!

Used this to have a power-port as well as a quick charge for my phone while working on My Kubota. I usually use Worktunes hearing protection that has blue tooth capability so I’m listening to music via my phone and needed a way to charge while on it for hours. The power cord that is shipped is short so I had to add length of wire to be able to connect it to the battery. Ground cord is also short but was long enough for me to attach it to the chassis under the instrument shroud. Overall seems decent quality. I highly recommend watching the install video because it took the guesswork out of what size holesaw to use. The prewired pigtails are good and it’s nice knowing there is a 10amp in-line fuse. Time will tell how waterproof it really is, especially when I’m clearing snow this winter.