I bought my Odyssey battery in August 2004 and got the trickle charger for it that will put out 2 amperes (RED LED) when the battery is not at full charge, then cuts back to trickle rate (green LED) when the battery is topped off. The Hobbs meter has 212.5 hours on it as of today.
I have several items in my airplane that have memory circuits. That is why I have a cigarette lighter power socket inside the cabin where I can plug in the charger when the airplane sits in the hangar. I have left the master switch turned on twice. The battery recoverd both times. The first time was during final assembly at the airport. The battery voltage was VERY low that time and it recovered in two days. The second time was just a week ago, and it recovered in 1 day.
By the way, that power socket also accepts a solar panel power charger when I go to Oshkosh each year. I put in the socket to allow me to run my computer or other items when flying. The other items include a 120VAC power inverter to operate my camcorder through its original universal charger, and a remote video camera via its universal charger. That combination of video equipment lets me use external audio from my GMA340 to the camcorder when flying. Any audio I can hear in my head phones also goes to the digital camcorder while the dash-mounted surveillance video camera sees the action outside. I got great videos going into and out of Oshkosh this year.
I also have a car stereo CD/Tape player in the airplane. The stereo music from it goes on the camcorder in full high-fidelity. With real-time narrative in flight, and musical sound tracks, it makes a completed video during the flight. I use the ICS mute inhibit option on the GMA 340 that allows me to talk over the music, not mute it. Receiving a radio transmission will mute the music.
Jerry K. Thorne
East Ridge, TN
RV-9A N2PZ
www.n2prise.org