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With all of the posts I've been reading over the last couple of years about battery life, I took action to maintain my batteries as best I could. The batteries in my airplane were installed in 2014 and are still going strong, verified again at this year's annual, and I credit that to consistent use of my BatteryMinder. But it was a pain to hook up, and I wanted something easier. Here's the installation I implemented for my BatteryMinder connections, inspired by Don Kaye's installation in his O2 filler port door. I went in through the TKS filler port door, which provided a very convenient place to cleanly mount a BatteryMinder Airframe Interface Kit connector for each battery. With the "Y" connector for the BatteryMinder, I can connect to both batteries simultaneously for a continuous maintenance charge and desulfation. Or I can charge each battery individually to get them both evenly topped off before putting them on a simultaneous maintenance charge, as recommended in the BatteryMinder documentation. Openning up the TKS filler port door and plugging in is a heck of a lot more convenient than what I've been doing, which required removing the left battery access panel, reaching in to pull back the boots on all four battery terminals and connecting the battery terminal clips to the terminals. Then removing the clips, putting the boots back in place, and replacing the access panel. Plus it saves me a fair amount of time, and has the look of an OEM installation (thanks to Tom, the world's greatest A&P I/A who transformed my idea into the finished product). My hope is that this inspires ideas for others thinking about doing something similar. What have other folks done? Cheers, Rick