Review on 🔋 TOPDON Battery Monitor: Bluetooth Car Battery Tester 12V with Wireless Voltmeter - Automotive Alternator Load Analysis, Battery Analyzer Charging Cranking Tester for Car Truck Motorcycle ATV by Brent Gurney

Full disclosure; I received this item in exchange for a thorough review. I have tested several different batteries and systems with both this tester and another one I have. I first tested the 675CCA outside the car. BT tested it at 660CCA while my other tester put it at 627CCA which is no big deal. I then tested a known working system. The battery and running tests came back about the same. The loading test worries me. BT came back with too low voltage in the charging system - 13.48v. My tester came back with 14.3v and said the system was fine. Another issue is that BT claims to test the charging system with both loads on and off, but never asks you to turn the loads on. Overall, it's a handy tool as it's wireless and easy to use, but its accuracy is questionable. Maybe with the new update they can solve some problems.