Waterproof Motorcycle 5V 3.1A Dual USB Charger & Voltage Temperature Display Voltmeter for 7/8 and 1" Handlebar Mounting

I ordered this and a coolant temperature probe at the same time, and installed them in a few hours of work on my 1996 Honda Shadow motorcycle, which came with no instrumentation other than a speedometer and odometer (and a reset-able tripmeter).This device does three things: 1- constantly shows you the volts at the battery,2--provides you two USB-type A charging ports for phones or GPS navigation devices, and3-- constantly provides you the current outside air temperature at the handlebar.THE GOOD: The device is inexpensive, and for purposes #1 and #2 above, works great. I've used it for 2 weeks now, and about 800 miles of riding. It was pretty simple to install and wire-up, although that's a pretty big deal on my bike because you have to remove the seat, the gas tank, and both side cover panels, and undo at least the positive side of the battery connection / terminal. Since I was wiring two devices, this was a bit more involved.PS: My bike has had, for more than a year, a permanently-wired SAE "Pigtail" through which I can connect a smart battery trickle-charger. Battery tender, it's often called. That quick-disconnect connection isn't wired through the ignition key switch, so it is always available to charge the battery on a bike that's parked with the key out. I ultimately decided to buy another SAE Pigtail, a 6" long wired piece, to use to power these new gauges. So when the bike's being used, I plug in these devices. When the bike's parked overnight, I unplug the handle-bar mounted devices (and have the option of plugging-in my battery tender).If I wanted to do more work, I might have wired both of these devices to a switch through which I could "turn them off" without unplugging anything, if I wanted to kill the power to them when parking for a few hours, or parking away from home, but with no intention of using a battery charger in the next few days.THE BAD: This unit's air temperature sensor is fully exposed to the sun, so it reads unusually high during most of the daytime, when riding on roads that are not heavily shaded. It reads too high when parked in the sun. Also will show unusually high temps when parked or idling due to the engine's heat rising up and flowing past the handlebar where this unit is mounted. It is accurate, however, at night when moving or when the bike's been parked overnight and is cool.

I had an electrical failure on my motorcycle last summer...had I had this monitor on my bike then, I could have seen the battery/stator/regulator were failing before my wires melted. It won't ever happen again with this monitor on it. Recommend it.

Readable in all light conditions. Only 4 star because the voltage numbers are not real stable during a static voltage condition.

Connected to a stable 12.5 VDC source and digital indicator jumps all over the place. Reads 11.7 to 13.3 VDC and is never stable. Will never install this device. Good for the trash can.

Not very well made, but SEEMS to work ok. But did not come with instructions. I dont know how to change it from clock to volt meter or temp gauge. Can anybody help me?

Let's me keep tabs on the charging system.

Really a needed device for uses to keep charged up; cell/GPS and whatever else..

perfect for my application on a tw200 mounted easily in a spot out of the way and easy to see has 2 usb ports tells you the voltage and the outside temp but the temp is in C not F all so has an on off switch so its not draining on your battery when the bike isnt running but it doesnt draw anything for voltage I left it on for a week and didnt know it and it didnt drain a thing from the battery so no worries if you forget to turn it off other than the temp thing this charge port is pretty awesome

Easy to install if you know what your doing.The clip on the power cord that comes on it is useless. (Had to remove it and replace it with something better)Also the power cord is to short unless your wiring it to something on your front bars.Absolutely NOT Waterproof.I washed my bike once and there were water droplets inside the screen. Would of been worse if it got rained on.

Just didn't work, tried all ways but no good