Went for a test run on my 80100 80Kv build this am and had a virtually immediate failure of my battery monitor. I was running the motor up in the water with the board against the dock. As I was easing into the throttle I saw around 5000W on the meter and the a spark from behind the screen and the unit (and everything downstream) shutdown. It was supposed to be rated for 200A and I estimate I was at about 60% of that when it failed and it was only there for a couple seconds. I was using this meter successfully with my smaller power glider motor but despite its 200A rating, it didnt stand a chance with the larger 80100. I have a 150A breaker just before this meter and it didnt trip for what its worth (not that it should have) and I am running 2X 20000mah turnigy 6S in series (12S).
Previously I used the 150A version of this meter with the powerglider motor and blew it so i upgraded to this 200A unit which had much larger wires. Now its toast.
What meters are you guys running with success? It would be great to have something that logs as well. The meters I have been using just show you real time voltage and current. This would be placed behind a window on my electronics enclosure so I can keep track of battery voltage while riding. Maybe something that measures current via hall effect instead of all that power running through the meter? I am running a Flier 400 boat esc.
For future builds stay away from the HTRC / Cheap Amazon meters! It took me buying two of these to learn this lesson.
Thanks for the help!