Ron — were the conductors in the battery cables bare copper (not tinned)?  
There’s good chance that was the result of the batteries outgassing; the gas is 
corrosive.  That’s part of the reason (along with salt corrosion) that ABYC 
requires tinned strands in marine-grade wiring.

— Fred

Fred Street -- Minneapolis
S/V Oceanis (1979 C&C Landfall 38) -- Bayfield, WI

> On Sep 25, 2017, at 11:19 AM, Ronald B. Frerker via CnC-List 
> <cnc-list@cnc-list.com> wrote:
> 
> I'm in fresh water and was surprised to find corrosion in the wires of the 
> battery cables many inches back from the terminals.
> Ron
> Wild Cheri
> C&C 30-1
> STL

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