It’s excellent for the price, but a little tricky to setup (too hard for some people..). Once configured you just need to learn the limitations of bluetooth. Not rocket surgery.Understanding and using the information requires some knowledge of batteries and car electrical principles ( beyond some people).The app could be improved with auto rotate back to vertical after landscape graph and more than a few mm spot to go from SOC to Voltage, very frustrating design. The 10-15 mV drain on the battery is insignificant.

For the people complaining that it only works when you are near it.. well welcome to 1989 it’s a thing called Bluetooth where it only works if you are near the device .. don’t expect to be able to read your battery voltage from across the parking lot .. you need to be near th device to see the voltage .. this should be obvious. Yes it is a constant drain on the battery .. but the drain is so small it wold take at least a week of just sitting for the meter to even make a true impact on the battery .. i been using this for a few months now to monitor my lithium batteries in my truck and it works great

Not a fan of it asking for access to location data. But it didn’t hound me. Product works ok so far.

I have a cheaper version and thought this would be better but it is junk. Tracking only works sometimes.The app only works when you are within a few feet. It also adds an extra continuous draw on the battery( slowly killing it). I don’t recommend anyone using this brand. It should be taken of the market.