Flame King Smart Wireless Propane Tank Scale - Bluetooth Gas Gauge with App Connectivity for BBQ and Grills Monitors Multiple Propane Cylinders - 20/30/40 lb Tanks

Works great and so easy to use. Download the free app install 2 double A batteries that aren't included. Put your tank on the scale and you get your reading on your phone. Highest reading says 80% not 100% when your tank is full. Tanks are filled to 80% capacity for expansion. App works free for 20 lb tanks, but app fee for 30 lb tanks.

The app would not connect after repeated attempts, it said to turn on Bluetooth - even though the phone's Bluetooth was already on.Additionally, the app states that location is required to function, exactly why and how does my location affect the scale's ability to weigh a propane tank!Also the packaging states that to use it on a 30# or 40# tanks you must make an in app purchase. I was never able to get that far but that is also ridiculous to require an extra fee to weigh anything but a 20# for free! Bought 2 scales, both are going back immediately.I was really hoping this would work despite poor reviews. I was willing to overlook some glaring errors, power switch on bottom, lack of a tare function and overall shoddy quality but to not function at all is not something that I can overlook.It's just a scale, a 3 digit display on the scale showing the weight is all that's needed, requiring an app to read a scale is silly!

Works fine but batteries don’t last very long if you leave it on they recommend turning it off but I didn’t

Very good backup!!!really wanted this to work but it only worked for about a month and than would not preform at all.Sorry it took so long but manufacturer free of charge sent me a new product. So I was very happy and you would be too.

I was hoping this would work to monitor a fireplace propane tank more easily but I am disappointed almost immediately.First, its unclear if there is an additional fee for the app or not - the directions in the box say anything more than 20lb requires a fee (HUH?!) to weigh. But in the app, it says its "included". So which is it? Bit nervous it will stop working.Now for some accuracy tests:I've got 3x 40lb tanks and 2x 20lb tanks for a fireplace and portable generator. Having just had a couple of them filled up this week and one slightly used I was excited to see how this compares to the "put it on a bathroom scale and subtract the tare-weight" method which seems extremely accurate....and I am very sorry to say this seems to be a waste of money.I'll attach a picture with my table that shows the full breakdown but suffice to say the Flame King seems to read about 22-25% low on all but one tank (which reads 11% lower than actual) if I compute a % of the rated capacity using a real scale. When you multiply the percent by the capacity to get Flame Kings estimate of pounds fuel, that value is about 9-10lb low for the 40lb tanks and 2-5lb low for the 20lb tanks.I suppose one could argue that its better to under-estimate how much fuel is remaining but that would mean you are getting ready to disconnect a tank that is nearly 1/4 full in the case of my 40lb tanks! And if your goal is to do tank swaps vs refilling (where you already get less full) you're throwing away a LOT of usable fuel that way!I guess I'll go back to the tried true reliable way I have been, using a bathroom or luggage scale to measure the weight of the tank, reading the TW empty rating off the tank neck, and subtracting to determine available fuel. Its proven exceptionally reliable so far.

Terrible design. Someone was working all alone from home and didn’t have anyone else QA/QC the design plan before it was sent to China to tool for production.The ON/OFF button is on THE BOTTOM!You literally have to pick up the tank each time, pull the scale ring out, turn it off, then reverse the process.DO NOT buy till V2.

As aggravating as this thing is, I can't help but like it. I have checked the accuracy and found it to be spot on, and a standard 20-pound bottle sits inside perfectly. Bluetooth communication between the scale and the app you install on your phone is flawless, until the scale loses power, which seems to be exactly when you want to find out how much gas you have left. And now, here is where it earns two stars from me... the battery compartment and switch are located on the bottom, requiring you to remove the bottle to access them. I'll be modifying mine to use an AC adapter, but this should have been part of the design to begin with. At the very least the battery compartment and switch could have been located on the side where an owner could replace batteries without having to remove the tank. But, like I said, I can't help but like this thing. For all the headaches, if you want a sure-fire way to know how much gas you have left this scale will get the job done.

my kids bought me one of the for my birthday--skeptical as to how accurate it was. Shocked--works great ---gives you the amount of gas left in the tank by % as well as how much time you have leftwould buy again