Gilligan wrote:
Battery charging is a science and must be done properly.


Looking thru the maintenance log of our tugboat, I saw that
the two previous owners had been replacing batteries after
about 2 years, although they carefully noted level readings
etc etc. The charger was huge buzzing ferro-resonant
contraption, cutting edge state-of-the-art 1920s technology.
I unbolted it and threw it away.

DSK