Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester 12V Automotive Battery Load Tester,Automotive Charging and Cranking System Monitor Digital Battery Analyzer for Android & iOS

Product description <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/f4306357-f937-46e4-a2a2-6f2cafdf1f14.__CR0,0,970,600_PT0_SX970_V1___.jpg"/> <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/e3007003-86e8-4f8a-8432-7f88b10d78fa.__CR0,0,970,600_PT0_SX970_V1___.jpg"/> <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/82be8fa8-6124-4ec1-b2a4-8f9d95b84bcf.__CR0,0,970,300_PT0_SX970_V1___.jpg"/> <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/b721749b-faa8-4f33-81b6-5c0d5a3934cb.__CR0,0,970,300_PT0_SX970_V1___.jpg"/> <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/770dc5f2-02d1-4bdc-868c-3672021863fe.__CR0,0,970,300_PT0_SX970_V1___.jpg"/> <img alt="Battery Monitor BM2 BM3 Bluetooth 4.0 Wireless Battery Tester" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/2d211c4f-11a1-4805-988e-0d9f3d5e9a98.__CR0,0,970,600_PT0_SX970_V1___.jpg"/> Features & details Features &amp; details Features "SIMULTANEOUSLY MONITOR UP TO 4 OF 12V BATTERIES" -- Download APP "BM2", you can monitor 1 of 12v batteries.

If you have more batteries, please Download APP "BM3", you can simultaneously monitor up to 4 of these devices(APP BM2/FREE,APP BM3/ NOT FREE) Features &amp; details