Battery Monitor BM2 for Car RV 12V Battery/Antigravity Batteries with Bluetooth 4.0 Wireless Battery Sense Tester Battery Load Tester Compatible with iPhone Apple Android Phone Free App

I'm using this in a battery box so I can measure how much power the battery has. It's a lithium battery, which means the voltage is higher, but the meter still broadcasts the bluetooth sufficient that I can get the signal through a wall, and it keeps records up to 15 days, which is helpful. Definitely will be ordering more.

It connect to the battery directly. The App, Battery Monitor BM2, works with my iPhone 12 paired via Bluetooth. It can send the battery status to the phone. It’s useful if the vehicle battery needs a jump or replace. It also shows the the voltage, charge, power, etc.It’s compatible with my Toyota Camry and Dodge Caravan.

This was simple to install and download the app and gives accurate updates but I seriously doubt it draws "only 1.5 mAh". The battery in my camper typically holds 100% of its charge for weeks at a time, as soon as I attached this meter, it lost almost 1% of charge per day. I now have to disconnect it between uses which defeats the ability to have the information readily available through the app.

What I was hoping to use this for won't work. I have a seldom driven truck with a dashcam which runs all the time. I am having dead battery issues after the truck sits for awhile. I was hoping that I could install this at the battery with the truck in the driveway and be able to monitor the battery in the house. While I can remotely see the battery voltage on my phone, I have to be within 8 feet of the truck for the bluetooth to connect. If I have to stand next to the truck, I might as well look through the window at the volt meter I added to the dash.Maybe if you have an application where the Battery Monitor doesn't have to be behind metal you might have better results.

Didn’t like the charging test at low and high idle. Required to shut off the car and sometimes it doesn’t pick up. Try to test with the car running and the ap tells you to start the car? Very touchy with the timing.

This app does not work on my galaxy note 10+ 5g yet but the developer is working on it. Until then it works with my tablet. Will be perfect when it works on my phone for notifications.

I used this to diagnose a occasionally dead battery in one of our cars. It was one of those maddening slow discharge situations that only is only noticeable if you leave your car sitting for a week or more. With this device I could tell when the battery was discharging slowly allowing me to systematically find the culprit. The device is simple to install and the app is fun (for something as unexciting as battery charging/discharging).

I assume there all the same, and they change the sticker. well its work properly but, i would like they Bluetooth to be able to go more then 10 meter. adding a exterior antenna wound help. Also i had to tape it because they box detach from de soccer wire leaving it open to moister and water.

The media could not be loaded.  Who ever buys this product you wear it will cut in and out and it doesn’t work most of the time even when you trying to reset it and it work once and it will cut off again it’s really frustrated with this stupid product

Product states "Battery Monitor BM5 for Car RV 12V /24V Battery/Antigravity Batteries with Bluetooth 4.0 Wireless Battery Sense" but it has no Bluetooth.

Easy to install and works as expected

Simply does not function