Sometimes I don't read things too carefully, and worse yet what I did read I forget. Case in point is the Concorde battery in the Cessna. In the back of my mind I remembered some admonition to not charge at a rate of more than C/10. That is amp hour capacity divided by ten. Well, I spent quite a bit of time reading the Instructions for Continued Airworthiness (ICA) which is the FAA name for a maintenance manual. Sure enough the C/10 limitation was there but only if it did not pass a capacity test. So I made the assumption that it passed the capacity test and charged the thing at 14.125 volts constant potential. It worked. I figured that battery took about the 24 amp hours it was rated at. We will see when we start it.