AGM batteries has any one used them

obiec · #1 (**permalink**) 04-03-2003

I understand that thay will acept a charge much faster than flooded and the charge paramiters arnt. restrictive like gell cells, and you can disharge them 30 percent lower than a flood, without harm. Thay do not have as big of a amp capacity but the depper discharge will make up for that.

Denr · #2 (**permalink**) 04-03-2003

I just purchased and installed (2) group 31 AGMs in my windjammer; I''ve nicknamed them "Shock and Awe". You can get more amp/hours by purchasing the next size up if you''re currently using group 27s. The 31s are about 1/2 inch larger than the 27s but will fit in the same battery box. Make damn sure you''re not putting more than 14.4-14.6 volts in them when charging or you''ll be replacing them next season.

Jeff_H · #3 (**permalink**) 04-03-2003

I second the issue of being very voltage sensitive. My boat came with a pair of new AGMs, the one is used the most lasted only one season. I had assumed that the boat had been set up for AGM''s but it was not and so charged them at too high a voltage.

Jeff

lecomte38 · #4 (**permalink**) 04-04-2003

ARGH !!!!! lead acid rules ! $200 for 440 ah of bullet proof T105s is the best deal you will ever get.

Trojan Man

Denr · #5 (**permalink**) 04-04-2003

Condom Kid:

The lead acid wet cells suck as far as performance compared to the AGMs. Charging time on the AGMs are a fraction of what a wet cell would be, their internal resistance is 1-2% vs. 16-20% on the wet cells. AGMs need NO/ZERO/ZIP/NADA/ZILCH/Kine maintenance, they can be used upside down without the risk of spilling, can be deeply discharged twice as many times as a wet cell, and need I say more? Wet cells blow!