"Doug Dotson" dougdotson@NOSPAMcablespeedNOSPAMcom wrote in
:

AGMs can be charged at a rate quite a bit higher than wet batteries. Gels
are 50% of AH rating, AGMs are at 100% or more.

Doug


And will put that damned AGM wonderbattery into thermal runaway, too.

"9.2.7. If a wet battery becomes hot, over 125° F (51.5° C), or if it
violently gasses or spews electrolyte, turn the charger off temporarily or
reduce the charging rate. This will also prevent "thermal runaway" that can
occur with VRLA (AGM or Gel Cell) batteries if the battery temperature is
over 100°F (37.8° C)."

100F.....that's WARM, not hot! AGM batteries have little way to cool
themselves because the electrolyte has no convection flow all squeezed to
death in that coil of plates and fiberglass. Internal heating has to
migrate outward by conduction, alone.

AGM isn't any kind of magic....no matter what the slick salesman told you
to justify the awful price.

Here's some more charging information to stoke this firebox thread:
http://www.uuhome.de/william.darden/carfaq9.htm

--
Larry