[Stormer]

Thanks for your reply.

Actually, the alternator is rated higher (it might be 100 AH or so - if they make them at that rating. I used to know exactly what it was).

Still I find that the regulator slows the charging considerably. If I''m 60 AH down, my LINK 10 may show the batteries charging at 45 AH for a while, then the charge rate may drop to 20 AH for a little while, then 10 AH...I would think with a larger alternator I would still have the same regulator issues to prevent frying the batteries.

Should I expect not to be able to bring the batteries back to full charge using the alternator? It would seem - given the regulator - it might take 4 to 5 hours to top off the last 20 amp of capcity since the regulator may only permit a charge rate of 5 AH when the batteries are nearly fully charged...

Thanks