{"product_id":"auto-battery-monitor-bm2-bluetooth-4-0-12v-device-car-battery-tester","title":"Auto Battery Monitor BM2 Bluetooth 4.0 12V Device Car Battery Tester","description":"\u003cp\u003eIn this review the Quicklynks Auto Battery Monitor BM2 Bluetooth 4.0 12V device is evaluated for drivers, RV owners, boaters and anyone who wants continuous insight into a 12-volt battery. The bottom line: this compact monitor is best for users who want simple, real-time \u003cstrong\u003ebattery voltage monitoring\u003c\/strong\u003e and alerts on a phone without wiring complex meters. Installation is straightforward and the free app provides immediate feedback on charge, cranking condition and trip data, making it a practical tool for routine maintenance and preventing unexpected no-starts.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12V compatibility:\u003c\/strong\u003e Works with all 12-volt lead acid batteries so it can monitor cars, motorcycles, RVs, boats and small solar systems with the same device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 4.0 connectivity:\u003c\/strong\u003e Sends live voltage and status data to the free iOS and Android app within roughly 10 meters for hands-free monitoring on a phone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic low-voltage alarm:\u003c\/strong\u003e The device alerts the phone when the battery drops below a safe threshold so users can take action before a failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging and cranking tests:\u003c\/strong\u003e Detects engine starting and reports cranking performance and charging behavior so you can spot weak batteries or alternator issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData logging:\u003c\/strong\u003e Stores up to 31 days of data if the phone is out of range, allowing review of recent trips and battery usage once reconnected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe BM2 is aimed at vehicle owners who prefer a low-effort way to track battery health: commuters, weekend riders, RV and boat owners who want peace of mind about a 12V battery without a full diagnostic rig. It is especially useful for people who rely on their phones for alerts and value automatic logging of trips and voltage events.\u003c\/p\u003e\n\u003cp\u003eThose who need laboratory-grade accuracy, long-range telemetry beyond Bluetooth range, or integration with a fleet management platform should look for a more advanced professional tester or a telematics solution. Users who do not have a compatible smartphone or who require multi-year offline storage should consider a different product.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy to install and pair, giving immediate \u003cstrong\u003ereal-time battery monitoring\u003c\/strong\u003e on a phone.\u003c\/li\u003e\n\u003cli\u003eSupports multiple 12V systems including cars, motorcycles, RVs and solar setups with one app.\u003c\/li\u003e\n\u003cli\u003eAutomatic low-voltage alarm and cranking detection help prevent unexpected breakdowns.\u003c\/li\u003e\n\u003cli\u003eFree app for iOS and Android with data storage for up to 31 days when offline.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBluetooth range is limited to about 10 meters, so remote monitoring from far away is not possible.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed results on connectivity and perceived battery drain when left connected.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eQuicklynks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAuto Battery Monitor BM2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery compatibility\u003c\/td\u003e\n\u003ctd\u003eAll 12V lead acid batteries (car, motorcycle, RV, boat, solar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage range\u003c\/td\u003e\n\u003ctd\u003e9-16V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eBluetooth 4.0 (approx. 10 m range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp support\u003c\/td\u003e\n\u003ctd\u003eFree Battery Monitor BM2 app for iOS 7.1+ and Android 4.3+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData storage\u003c\/td\u003e\n\u003ctd\u003eUp to 31 days when out of sync\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Quicklynks BM2 is a practical, budget-friendly choice for anyone who wants simple, phone-based \u003cstrong\u003ebattery monitoring\u003c\/strong\u003e and alerts for 12V systems. It offers useful cranking and charging checks and stores recent data for troubleshooting, making it good value for routine maintenance. Buy it if you want a lightweight, app-driven monitor and understand its Bluetooth range and app compatibility limits.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work on my motorcycle or RV?\u003c\/strong\u003e\u003cbr\u003eYes, the BM2 supports all 12V lead acid batteries, so it is suitable for motorcycles, cars, RVs and boats.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat phones are supported?\u003c\/strong\u003e\u003cbr\u003eThe free Battery Monitor BM2 app supports iOS 7.1 and later and Android 4.3 and later; download via the app QR code or manual link in the product materials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I monitor the battery from far away?\u003c\/strong\u003e\u003cbr\u003eNo, the device uses Bluetooth 4.0 with an effective range of about 10 meters, so it is intended for local monitoring rather than remote telematics.\u003c\/p\u003e","brand":"Quicklynks","offers":[{"title":"Default Title","offer_id":46484901265627,"sku":"B01MT4583U","price":28.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61S4uoIbEhL._SL1000.jpg?v=1739298244","url":"https:\/\/gearmusthave.com\/products\/auto-battery-monitor-bm2-bluetooth-4-0-12v-device-car-battery-tester","provider":"GearMustHave","version":"1.0","type":"link"}