Gadget for measuring volts amps Amp/Hr

Hi,

Came across Site Link this gadget on a model aircraft supply site in the states. Astro Model 101N Super Whattmeter

Measures battery volts, Amp/Hour rating, discharge and charge amps all in one unit and all at the same time and with the right capacities to suit our purposes. Seems like it would be helpful to resolve many of the electrical questions we have, and save the fiddling with the Dick Smith meters I've done with limited success - and others have done with great success. If I get one it'll be armed with a set of Anderson Powerpole plugs so I can connect it in series with all my other gadgets and check what is going on at each outlet.

Link to the pdf file http://www.astroflight.com/store/pdffiles/101N.pdf

I've emailed them to ask what would happen to the unit if the amp hour capacity of the unit (94 Amp/Hr) was exceeded in a duel battery setup for example, and also asked if it can be left on or if it has a duty cycle.

Anyone seen something similar locally??

Tim