ANCEL BM200-US Car Battery Tester 12V Automotive Battery Monitor Bluetooth Auto Battery Load Tester with Cranking Charging Test Alarm Record Voltage History Voltmeter for Car/RV/Motorcycle/Truck/Boat

I don't drive my truck a lot lately and as a result battery has gone dead a few times. I got this so I can check the battery remotely and it will also send a notification if your battery falls to a certain level that you can adjust in the app settings. It works perfectly from behind the wheel, I'm able to park almost directly under my bedroom window it should work fine from there too if I open the window. Bluetooth is a short range technology, most folks are saying under fifteen feet which is fine with me. There are a few tenders available that have wifi capabilities but this gadget is more versatile because you can use it with any charger or a solar panel etc. and keep an eye on your battery level remotely. The unit also has other functions that I have no plans to use at the moment but adds to the value of the item for sure. I had zero problems finding the app with the convenient scan box on the box the item comes in and the app had zero issues finding the gadget and pairing with it (make sure bluetooth is on before you install the software, the gadget comes on in pair mode like many if not most bluetooth gadgets these days. So far so good, it would appear they've improved things or I just lucked out and don't have any interference at my house. Does what I wanted, lets me monitor car battery voltage without getting into the engine compartment. You will automatically get a notification every day from the unit but it will only show current battery voltage level which is what I wanted it for.update roughly three weeks later: Item still working great but this morning when I started up the app it could not see the battery in my car only a couple feet away. I have noticed that sometimes with products using bluetooth an app update might mean you have to restart the phone/tablet or rarely even reinstall the bluetooth gadget before things start working correctly again. I don't know if there was an app update, it was in the 20's outside this morning but that shouldn't have been cold enough to create a problem. Turned the phone off and restarted, all working again so be aware that if you have issues you possibly need to turn off your phone and restart to get it working again (not a biggie). I put my new nocco genius 10 charger on the battery (probably stay away from where you have the gadget connectors on the battery just in case) and used the app to monitor the charging works perfectly shows voltage coming off the battery and percentage charged to get any more info you have to start the car up.It's now almost April of 2025 been using this about six months. Item still working perfectly and I can sit in my bedroom and pickup the bluetooth connection off the truck parked outside my window. It's doing what I wanted it for, making sure my battery doesn't go dead because I don't drive the truck enough. I'd recommend this little add on to anyone with a vehicle they don't drive every day but need it to start when you need to drive it.

Update 1/27/25 to my original review.I received a replacement unit that now works for downloading the data locally. As far as calculating the fuel usage by MPG, when in Imperial units, Not metric units, I simply put the cost of a gallon of gas and MPG for the other field. I ignored the liters note in the little message area. I also confirmed that the unit had the latest firmware installed.So overall, I am very impressed with the performance and by the way, customer support was excellent also.--- First Review:Some features in this I liked, and some I did not like. First off, it was easy to hookup and get the Bluetooth working. However I could not get the data to download no matter what I did. I wanted to be able to download the data to compare historical data from time to time on a battery setup. And so maybe I had a unit that simply did not work for downloading. One feature that I did like was the fact that I could fine tune the battery discharge curve based on custom type. But for the most part it had both LiFePo4 and Lead Acid batteries you could select from the menu. Another feature that didn't make sense is they have it so you can put it into American settings, but not everything. For example, they have the option to put in data for 100 kilometers of driving, though there wasn't a way to enter miles. That was strange that they didn't have that conversion built in.The Bluetooth portion works well, and is really designed for close use only. I wanted to be able to monitor the voltage while driving at times, and that was the cool part. I really didn't expect it to go long distances, because Bluetooth is not designed for long distances. I'm not sure how the Bluetooth part works for finding your car, I didn't really give that a chance to see how it works. So this Ancel unit definitely has its pros and cons, and the pros outweigh the cons, but in the end I returned it because I could not get the data exported. Like I mentioned, maybe I had a bad unit.

The physical install was a piece of cake. This thing is very small and should work for just about any vehicle battery needed. I installed it on the house battery of an RV.Next download the app, Easy and fast to install. I used guest mode to skip any of the registration stuff. Next is the only part that I struggled with. You need to enter the module ID into the app. and my phone was not reading the printed bar code to auto enter it. I eventually got the ID and now it works perfect. A simple click on the app and I can see the SOC of the battery, If the Vehicle is running I can also see the output of the alternator voltage and that it is charging the battery. I would without doubt say if you want to keep an eye on your battery you should get one of these. The only reason I did not give it 5 stars was the trouble I had getting the unit to pair with the ID of the module.For the record, I have it paired with a couple of iPhones

Excelente dispositivo permite validar en tiempo real el voltaje de la batería de mi vehículo, adicional me permite ubicar en tiempo real la posición e historial de navegación y trayectos realizados por mi vehículo por GPS.

My RV dashboard only shows four likes to indicate battery charge. Since that is a vague means of measurement, after a search, I selected this device. It measures total battery charge, and solar panel charging performance. I am very happy with this device.