Hey guys, I'm interested in real time Ah. I tried one of those generic Turnigy watt meters but the display is defective as it doesn't display anything when my 48v battery is near full charge. I just noticed this wireless voltmeter ammeter http://www.ebay.com/itm/252368209895?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Does anyone have one, or any opinion about it? Looks like they also have a remote version with a USB to the display. Thanks