[jhautz]

The Watts-Up meter can record peak amp, minimum voltage and peak watts. I used to use it for this before getting an eagle tree and still do on occation. So by stopping and checking what your lowest voltage was under load you could see when the packs are running down, But from my experience, most Lipos run strong until right before they dump and then they drop off rpidly. It wold not be that effective in decting the end of the pack.

As a basic tool the Watts-Up still usefull IMO. I keep mine in my battery bag for doing quick voltage checks and sometimes run it in line when testing a new system/setup just to see a quick gauge of how much power I'm pulling as a sanity check that Im not overloading the batteries or esc or something. It doesnt give you alot of info but does tell you the basics.

Max amps, min voltage, max watts, mah consumed, live actual voltage, etc.