My 2009, Odyssey PC925 failed with symptoms suggesting a dead or dying cell: 11.3V - immediately drops to 11.3V when car is turned off and turned back on 10.3V - next morning voltage, highest 9.8V - lowest, cold weather voltage that started car unplanned jump starts in the past six months and one at home during removal, discovered B+ bolt was becoming loose So I had bought a PC925 for my wife's car. When I brought the old one in, I found they had reversed the position of the B+ and B- terminals to my advantage. Before the terminals were close to the frame of the NHW11 but now they are on the 'space' side of the battery compartment. But as I was connecting the ground, I saw 'sparks'. I measured 1.1A current draw which seems high for just the trunk light. I'm beginning to think LED interior lights. After the replacement using Graham miniscanner metrics: 11.7V - without the parking brake set that defeats daylight running lights 12.7V - with parking brake set after having run for 2-3 minutes I've put the old PC925 on a smart, battery charger and will check it after a day on charge. This is just to confirm the bad-cell diagnosis. Bob Wilson
