iMESTOU 5V 2.1A Motorcycle Dual USB Charger Adapter with SAE Quick Connector & Power Switch Waterproof Smart Charging Ports for iPhone Samsung GPS etc.

I like it. Just installed it yesterday and had a chance to test it while riding my KLR-650. It kept my phone charged. The ON/OFF button is a must. The button allowes to turn the charger off when the bike is not being used, to keep the battery from being discharged.My bike has a single cylinder engine. It does have some vibration. The rubber spacers on the handlebar clamp are made of soft rubber and it effectively cuts down vibration on the charger.I had to install an additional 5A fuse near the battery terminal, for safety. It's very important as it will prevent a fire caused by a shorted wire. All electrical appliances on the vehicle should be fused as close to the battery terminals as practical.So far, I'm happy with the charger and would recommend it to anyone.

I can't even imagine how I managed without one of these power switches on the bike. I travel a lot and most times don't have a place to plug in my phone or other items, now I can charge whatever I want. Very easy to install, on and off switch with indicator light and a nice snug cap to cover the ports when not in use. Great product.

Common shortcoming shared by all other manufacturers of "waterproof" USB units, it is only waterproof when the cover is on and there is no USB cable plugged into it. Otherwise rain or splashed water can get into the exposed USB ports. USB cable connectors are dry connectors and not designed for immersion in water. ALL of the units claiming to be waterproof aren't when in use. It would require having a boot that includes the USB cable(s) when connected to be sealed against the ribs on the port housing. Otherwise, it works well, installs easily, and should be coupled with an in-line fuse if your SAE connection is not already fused.

I bought another popular USB port that doesn't have a switch and believed the erroneous comments that it wouldn't run down my battery/wouldn't matter. It did. Removing the seat to plug/unplug for every use to prevent battery drain was tedious, so I went looking for a unit with a switch.Pros:Switch!!Adequate length to run back to the battery under the seat with about a foot left over.Zip ties included!Cons:The included rubber shims were inadequate thickness to secure mount to my bars, so I had to develop a workaround.The detachable mount does not click in to secure the USB port like it is designed to, but I think it will still be ok.Should have been designed with a simple way to zip tie it directly to bars and skip the mounting problem altogether.The unit is 2 pieces: handlebar mount w/rubber shims to add thickness and the USB part that slides onto the mount. It looks like the port is supposed to click into the mount at the bottom of the slide, but the plastic spring retainer does not have enough pressure to securely click it in, so it slides up and down with manipulation. I don't think it will wiggle out though. Why would you need a quick release when the wiring is snaked through the body, zip tied, and connected to battery under seat? There is no reasonable need for a quick removal option, so I think this is an ill-thought out "feature" that is useless. Not a critical flaw. -0.1 starMy major installation problem was even with using all rubber shims inside the mount it was still sliding around the bar loosely. I have a 2014 Suzuki VStrom 650 for reference. Thankfully, I had some old spare parts from past bicycle and motorcycle handlebar mounts (I never throw anything away like that for this very reason), so the three included + one more of my spare shims got it tight. You can see in the close up pic that there is a wider and very thick rubber shim closest to the metal. That is the one I had lying around and shows how far off on sizing this was! With no back-up option to easily zip tie it directly to the bars, that was a near miss. -0.9 stars.Previous port had ability to zip tie directly to the bars. I wish this one did because it would have saved me some frustration and I'd have given installation 5 stars.Everything else is great. Love the illuminated switch! The installation is a small up front headache that will drift into the past as this thing continues to do what it was designed for.

I wanted a waterproof unit for the bars on my Harley Sportster. I appreciate the on/off switch as it prevents drain on the battery.

Well made unit. Fast charging . Fit's the stock handlebar on my 2022 HD Road King.

I had the bigger one . Realy like the size and a button to turn it on or off . Install was ezy. Great for charging ipod gopro phone .

Being both an electronics engineer and curious I decided to figure out why my iMESTOU 5V 2.1A Dual USB Adapter was DOA. Unfortunately, I cut the wires and installed it before testing it (my bad). So I cannot return it. For you doubters out there, yes I made sure the positive input got the positive voltage.I do not normally write reviews, but what I found warrants taking the time and might even spur the company to improve their design. I hope they can use this information to figure out their design issues.It says input voltage range is 8 to 28 VDC. They added "+-4 Volts," which is silly to have since the buck-converter would not give 5 VDC out with a 4 VDC input, and implies it would work with a 32 VDC input.I was adding a USB charger to my wife's electric wheelchair and used the 26.7 VDC wheel chair battery. Likely the in-spec voltage fried the input to the DC-DC buck-converter when it was first applied. I have attached a picture showing the buck-converter's fried supply voltage input pin in the black circle.I cannot comment on how this works at 12 VDC, but based on other bad reviews, it might not fair well at 12 VDC either. So I have to give it a one-star rating, and hope the company can improve their design for future purchasers.