BM2 Battery Monitor

A couple of months ago a friend showed me his BM2 Battery Monitor installed on his 420SEL. It is a bluetooth enabled battery monitor that connects to a phone app. The app lets you monitor the battery in real time, run some tests and download history from the battery monitor device.

I already have various battery testers which are useful for standalone battery testing. However, I didn’t have a good way of checking the overall charging system of the cars. In particular, I have seen some strange behavior with the radios in my 250SE and Citroen DS that may be […]