Freaken Rat. Currently reduced to yard duty. The battery is from my last 528e and about a yr old I plug in the 1/2 A floater at least monthly. Cables are clean and tight. When the truck has warmed up for 10 minutes, idle is down to 900RPM. I put a meter across the power port. 15.1 V. A couple hrs, later I checked the battery voltage, 12.67 V. That is nearly a 100% charge. Resting draw is