I've searched the forum but couldn't find my exact question answered. Since I only drive my 23 Prius once a week, I disconnect the battery in between uses and I use Ready mode every week to charge the battery, which is a near new battery purchased from AAA. However, the voltage produced by the Ready mode varies a lot. For example, yesterday I used Ready for almost three hours but the voltage didn't rise much over 12v. A week ago, Ready produced voltage near 13v in less than half the time. Is there a right way and wrong way to use Ready mode that explains this discrepancy? Thanks, Lloyd
