KR> Back-up Battery

2009-04-16 Thread mbz...@comcast.net
I'm not sure if this would work in a plane as a back-up. But in RVs and boats in order to use 2 different batteries for instance a car battery and a deep cycle battery, A simple cross-over circuit is used that can be purchased at any RV or marine store. The cross-over is pretty much just a high

KR> Back-up battery

2009-04-14 Thread laser...@juno.com
Thanks everyone for the in-depth replies! Everything from schmatics to personal experiences. I don't know why I've been so thick - I'm pretty sure someone has told me around the airport that you can't connect in parallel such dissimilar batteries. Then again, others (with my level of understandi