Review on iMESTOU 5V 2.1A Motorcycle Dual USB Phone Charger Adapter w/ ON/Off Switch | Waterproof Ports | Smart Charging Socket | Fused | 12V/24V Compatible | ATV UTV Lawn Mower, etc. by Jeff Strutz

I like it. I just installed it yesterday and had a chance to test it while riding my KLR-650. He kept my phone charged. The ON/OFF button is required. The button allows you to turn off the charger when the bike is not in use to prevent battery drain. My bike has a single cylinder engine. There is some vibration. The rubber pads on the handlebar clamp are made of soft rubber and effectively reduce the vibration of the charger. To be on the safe side, I had to install an additional 5A fuse next to the battery pole. This is very important as it will prevent a fire due to a short circuit in the wire. All electrical devices in the car should be connected as close as possible to the battery terminals. So far I am satisfied with the charger and I recommend it to everyone.