Originally Posted by goboatingnow
AGMs have no place on a boat, they have good characteristics that cannot be typically exploited on a normal boat and bad characteristics that unfortunately do manifest themselves on a boat.....
An old thread but lots of good and bad advice like this quote!!!
Maybe goboatingnow has had bad experiences with AGMs or knows a friend who has.
Nobody has yet made the point that NOT ALL AGMs
are the same, so the Q "Rolls versus AGM Batteries?" is not a fair question. "Rolls versus Lifeline
AGM Batteries?" would be a better comparison.
Many AGMs are not designed for faster charging
or high charge rates, and many are specifically designed as Solar
or Telecom standby batteries so are not robust enough for regularly falling off a 3 metre wave in a big sea.
We are in our 9th year with Lifeline AGMs and the benefits of faster charging
and higher rates of charge have worked very well for us. We have a 280 amps DC genny, large alternator
The right AGM does have a place on a boat, even on a normal
boat, but get the charging regime right to get the maximum benefit for the high price
that you are paying.