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Ricer-X 01-25-2007, 12:58 PM So How Many Volts Does The Average Battery Actually Put Out? Bc In Every Installation Manual I Read I See "12v Power Source" My Buddy Says His Put Out Like 11.4v. My Optima(according To Scan Gauge) Puts Out 13.9-14.0v Anthony 01-25-2007, 02:00 PM Usually between 10-12v with the truck turned off, but about 14-14.8v with the truck running. Muzikman 01-25-2007, 02:18 PM The ScanGauge is showing you what the Alternator is putting out, not the battery. If a battery gets below 10v it usually won't start a vehicle. Fully charged it should put out right around 12v. Ricer-X 01-25-2007, 02:24 PM since that answers my question, ill stray off topic and mention that, at 65 mph if i take my foot off the gas, once the rpms drop i get around 70mpg, while if i punch it i get as low as 2mpg, i had fun playing with it yesterday, seeing how high and how low i could get it, the highest was 75mpg, toyota prius go cry in a corner!:auslachen2-big: Muzikman 01-25-2007, 02:29 PM Yeah, it's amazing how good of gas mileage you get if you are coasting. :) For best results, turn off the engine. :) json3904 01-25-2007, 04:06 PM thats a good way to put it soccerbrace 05-01-2008, 11:57 AM Hey would the scangauge be able to read battery voltage as opposed to Alternator output? And if so, would it be able to read 2 different settings? Ricer-X 05-01-2008, 12:06 PM no idea however, pertaining to my OT post above since the tranny cooler install, i have been able to break 100mpg on the scangauge, at 70mph no throttle, WOOTZ soccerbrace 05-01-2008, 12:10 PM Nice! The stickers must've helped! soccerbrace 05-01-2008, 12:13 PM BTW, there are 6 cells in a battery, which produce about 2.1V therefore actual is closer to 12.6 considering the above is true X~Terror 05-01-2008, 12:22 PM Yeah, it's amazing how good of gas mileage you get if you are coasting. :) For best results, turn off the engine. :) LMAO :clever: | ||