JIMMIE wrote:
On Nov 16, 4:42 pm, wrote:
Why not use a traditional split charge relay.
Alternator output then becomes the limiting factor

I didnt think you could charge a deep cycle battery in an
automotive system without damaging the battery. Its my understanding
that car batteries are designed for a quick charge at realativly high
current while deep cycle batteries require a long low current charge.
To make it work thought you had to have a special charge regulator for
the deep cycle battery.
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'Deep Cycle' batteries should be charged with a current not exceeding
0.1C , meaning that a 80Ah battery should be charged with a current not
exceeding 8 Amperes.

Frank KN6WH