Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester for 12V Automotive Battery Load Testing, 🔋 Monitoring Automotive Charging Systems, and Cranking Analysis. A Digital Battery Analyzer Applicable for Android & IOS Devices Review

I have several of these for my farming equipment and don't need to go near anything totem. Allocations are nominal and do not interfere. One of these sat on my D8T for a year with no starting or starting problems. Some complain about the tiny difference in voltage, that tiny difference in voltage is nothing when they save me an hour of my time knowing I'm going to a good battery or a bad charging system. Well, if someone can save me an hour, the price of it saves me time, and time saves me…

Can't make it work. I hooked it up to a standard 12+ volt lead-acid car battery that was tested with a multimeter. The polarity is correct. I downloaded the app with no problems. I see the device under Available Bluetooth devices on my smartphone. Samsung Galaxy S9. When trying to pair, you will be asked for a PIN code. I couldn't find the pin in the manual. Found other reviews that say no needle is needed. And it will connect automatically when Bluetooth is on and the device is within range. I

I installed the app while waiting for the device to arrive. When it arrived and I installed it, it was immediately found via bluetooth. Installation was very easy, it took me longer to go outside and get the key from the trunk than to physically install it. My positive terminal cover doesn't quite fit, but can be secured with a small slot in it. After plugging it in it told me my battery was at 9%, somewhere around 12v. I ran the machine for about 20 minutes and got it up to 90% (14.3v) but as…

As you can see in the picture this meter is 0.056V different compared to a NIST calibrated meter. That may not sound like much, but if you calculate that every 10% of the Ah capacity of a typical 12V battery is represented by a change in open circuit voltage of about 0.10V, it means that the voltage accuracy of this device by almost 6 % differs from you. Ah. Capacity. Now suppose you have a 450Ah battery and that a 6% voltage error could mean up to 27Ah of distortion. Charging at 13.746V. As…

What a great easy to use product that costs many times less than other monitors. The Bluetooth connection was solid and reliable. I have a monitor hooked up to a battery in my garage and I can get readings from the monitor through my phone from across the house. This monitor has a stronger connection than my $120 Plantronics headset! I've never lost contact at home either - whenever I left the house and then came back, the monitor would automatically connect to my phone. Shouldn't Bluetooth do…

This is a fantastic little time saver, you can read straight from your mobile phone what your battery voltage is when you have a problem he'll tell you right away he's getting under the hood and taking care of it, it's very easy to hook up, a four year old can do that and stuff. It connected directly to one of my phones but not the other, I don't know why it happened but I think it's likely my phone was just temperamental but it worked straight away with my other phone, I gave it 4 stars…

I don't use this in the car, I live 100% offline (since December 2007), everything I did was very cheap up until this year, I decided to add an additional solar system that used LiFePO4 batteries (Battleborn Lithium Iron Battery). I needed a reliable yet inexpensive way to check the voltage and health of my battery and I found this. I wasn't sure how well it would work, but since it's still a 12 volt battery, it reads exactly the same as a 12 volt car battery. Love the fact that it's Bluetooth,

Let me start by saying that this device does exactly what it is advertised to do. So this part is good. Small, compact and easy to install, it can be held in place with a simple cable tie wrapped around the battery terminal. The application is very pleasant, it is easy to install and connect. right and good. It serves its purpose very well if you understand and accept its limitations. I really like the trip monitoring tab in the app. This keeps track of recent rides and shows the date and time…