# BM6 — Battery Monitor BM6 > Real-time automobile battery voltage monitoring and system testing via Bluetooth. (iPhone/iPad app by Shenzhen Leagend Optoelectronics Co., Ltd..) - Source: https://appshunter.io/ios/app/bm6/id1561912036 (this page in markdown: same URL + `.md`) - Developer: [Shenzhen Leagend Optoelectronics Co., Ltd.](https://appshunter.io/developer/6798210621) - Category: Utilities - Price: Free - Rating: 3.20/5 from 17 App Store ratings · 72 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 64 MB - Languages: American English, Arabic, Czech, Finnish, French (France), German (Germany), Italian, Japanese, Korean, Norwegian Bokmål and 7 more - Released: 2021-04-08 - Data updated: 2026-08-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/bm6/id1561912036/reviews.md ## What is BM6? Battery monitor 6 is an application of automobile battery. It can let people know the voltage of automobile battery in real time. It helps users fully understand the battery by testing the starting and charging system voltage. It can accurately record the time of car starting and stopping. All data can be displayed on the mobile phone through Bluetooth. Easy management of vehicle battery power ## Key features - Real-time battery voltage monitoring - Starting system voltage test - Charging system voltage test - Records engine start/stop times - Bluetooth data display - Vehicle battery power management ## Recent user reviews (10 of 72) All indexed reviews: https://appshunter.io/ios/app/bm6/id1561912036/reviews.md ### 5/5 — Useful info. *2026-05-18* Had 2 of these for a few years on my personal van/leisure batteries, just put a third on my work van as the stop start is intermittently turning off, it paired up easily when I tapped the + symbol in a blank battery display so now I can see how its doing and replace it if required. Not something you replace unless required these days. ### 5/5 — Awesome BUT ADD CAR PLAY *2026-04-15* It monitors the battery pretty accurately and also keeps track of the trip and values of the battery during the trip and it’s extremely useful also having it give you warnings about low voltage and having the ability to test the battery with easy to follow directions are also a plus BUT PLEASE ADD IT SO I CAN POP IT UP ON MY APPLE CROLAY SO I DONT HAVE TO LOOK AT MY PHONE WHILE PARKED :) thanks ### 5/5 — Tracking *2026-03-19* I love this battery monitor it does more then just tell me my battery health it tracks my drives, i have this in my sand rail and after 7 days in Glamis i noticed i had a clear map of all our drives and the location of the car i couldn’t be happier I’m going to get more for my other cars ### 3/5 — Inaccurate SoC on LifePo4 *2025-12-06* It’s a terrible shame that they don’t have a mode for solar charge units, where SoC just represents where the voltage is on a scale. It ends up showing empty, when the battery is full, and vice verse. Just keep it simple guys, your market is wider than cars and lead acid. ### 5/5 — Works well *2025-09-29* Requires a Login but you don’t need to create an account or share your email. I just use my Apple ID. ### 3/5 — Werte stimmen nicht *2025-09-27* Kein zuverlässiges tool - batteriespannung beim start 11,2 volt ?! Bei last 12,5, bei motorbremse ohne gas 14,5 volt - da läuft gehörig was falsch ### 1/5 — Junk *2025-09-15* Batteries don’t connect to app. Verified serial numbers and tried to re-add but never recognizes them. ### 1/5 — Won’t connect to battery monitors *2025-08-17* I have 3 BM2 battery monitors that work fine with the BM2 app (by the same developer) but wanted to use something that could read all of them and export data etc. installed this app but it refuses to even try to connect, just saying “can’t connect to Bluetooth”. I have tried connecting with the BM2 app first (working fine), and tried quitting the BM2 app in case it was clashing in some way but absolutely no joy. There’s an identical looking app called Angel BM200 which doesn’t work either. I know they work as I can see them from the BM2 app but can’t get this to work at all. ### 2/5 — Keine Funktion mehr seit dem letzten Update *2025-07-27* Lässt sich nicht mehr mit den Bluetooth Devices verbinden? ### 2/5 — Reasonably ok app *2025-07-16, version 2.5.6* The app is ok, it lacks functionality, it definitely needs a way for the user to be able to delete Trips that are not wanted ## Frequently asked questions about BM6 ### What does the Battery Monitor BM6 app do? The Battery Monitor BM6 app allows you to monitor your automobile battery's voltage in real-time. It also helps you understand your battery's condition by testing the starting and charging system voltages. The app accurately records your car's starting and stopping times, displaying all this information on your mobile phone via Bluetooth. ### How does this app help manage my car's battery? This application provides real-time voltage readings and tests the health of your car's starting and charging systems. By accurately recording engine start and stop times, and displaying all data conveniently on your phone, it offers easy management and insight into your vehicle's battery power. ### Is this app free to use? Yes, based on the provided information, the Battery Monitor BM6 app is available for free. There are no mentions of subscription fees, in-app purchases, or advertisements. ### What are the main features of the Battery Monitor BM6 app? Key features include real-time automobile battery voltage monitoring, testing of the starting and charging systems, accurate recording of engine start and stop times, and display of all data on a mobile phone through Bluetooth connectivity for easy battery power management. ## Version history (last 5 releases) ### 2.6.6 — 2026-07-23 1、Add iOS 26 display compatibility 2、Improve user experience ### 2.6.5 — 2026-07-22 1、Add iOS 26 display compatibility ### 2.6.4 — 2026-04-29 Solve the problem of invalid setting parameters ### 2.6.3 — 2026-03-24 Modify details ### 2.6.2 — 2026-03-14 Add a low voltage alarm function ## More apps by Shenzhen Leagend Optoelectronics Co., Ltd. - [BLUE LIGHT](https://appshunter.io/ios/app/blue-light/id998450290) - [OBD Pro](https://appshunter.io/ios/app/obd-pro/id1063199690) - [Leagend Auto battery tester](https://appshunter.io/ios/app/leagend-auto-battery-tester/id1090786879) - [BT1 Tester](https://appshunter.io/ios/app/bt1-tester/id1098097935) - [Battery Monitor BM2](https://appshunter.io/ios/app/battery-monitor-bm2/id1115492033) - [OBD Plus](https://appshunter.io/ios/app/obd-plus/id1208901144) All apps by Shenzhen Leagend Optoelectronics Co., Ltd.: https://appshunter.io/developer/6798210621 ## Related topics [dacheng](https://appshunter.io/ios/topics/dacheng) · [blackvue battery](https://appshunter.io/ios/topics/blackvue-battery) · [battery monitor bm2](https://appshunter.io/ios/topics/battery-monitor-bm2) · [amobank](https://appshunter.io/ios/topics/amobank) · [battery tester car](https://appshunter.io/ios/topics/battery-tester-car) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*