AGM Deep Cycle Batteries and Pulse Desulphators

No, in fact it may damage your new batteries which do not have a liquid electrolyte and hence do not suffer from cell sulfation.

http://en.wikipedia.org/wiki/VRLA_battery

http://en.wikipedia.org/wiki/Flooded_lead-acid#Sulfation

If in doubt check the MegaPulse manual.

Jack my experience with AGM is quite the opposite. I have resurrected AGM batteries that had been left in the junk pile for months and on occasion a whole year. These batteries sulfated to the point a regular charger could not revive them.

Howeve after a week of pulse treatment the batteries revived and would now take a regular charge. I have been using Pulsetech brand for about 10 years now with sucess. From what I ccan determine other brands of pulse desulfators appear to work equally well. After the patent to Pulsetech ran out a number of clone products have emerged on the market and appear to be eqqually good.

I have dismantled both liquid and AGM type batteries to examine the old plates. The sulfation seems to be about the same whether or not the electrolyte is liquid or absorrbed in a glass mat. I would need an electron microscope to see differences

Garyasta

Since you already have the desulphators why not use them? It won't hurt the new batteries My oldest models date back to 2001 and they still work. In fact so do a couple of AGM booster battery packs I bought back then.

More recently someone gave me a couple of AGM batteries that were made in China by the Haze Battery company about 5 years ago. They are 4.5 amp hour capacity and are used as the emergency brake power for trailers. If the trailer connection ever came undone a pin is pulled and the battery powers the electric braakes to stop the run away.

Around here trailers often sit unused for six months over the winter. this particular battery sat unused and uncharged for over a year. One day of treatment and six hours of trickle charging brought the battery back up to full charge. When I began the terminals read 6.75V So far the battery has retaained its charge for a week.

I have also rejuvenated a 200 amp hour AGM battery that sat unused for over a year. Unfortunately this battery only restored to about 90% capaccity. It was badly neglected

Pulsetech published a white paper wherein they stated apprroxiately 80% of all sulphated bateries will recover. Over the past 10 years I have had similar success.

Best results come with batteries that have not sat uncharged for more thna 6 months and whose terminal voltage prior to beginning treatment was higher than 9.5 volts.

One of my clients installed desulphators on existing used batteries. His inverter had a battery meter included so he used this to measure his battery capacity when he installed the desulphators. Five years later when he sold that boat he measured a capacity greater than what he had five years previously. Evidently there was at least some accumulated sulphation when he bought the boat with used batteries. Even so he got full use of the batteries and they were still in good condition five years later.

Good luck