Re: Yes - it is the best buy, by far

Posted by Jon Hagen on October 21, 2006 at 17:28:09 from (69.26.30.100):

In Reply to: Re: Yes - it is the best buy, by far posted by jdemaris on October 21, 2006 at 16:18:46:

I took your comment that AGM batteries being very sensative to overcharge and failing where a flooded battery did not means that you suspected that they failed because they were overcharged.
I can agree that a conventional design AGM battery with the multi square plate/seperator design not handling repeated deep dischargs may be true. That type of battery sees a lot of swell/shrink flexing and destructive movement of the plates during a deep discharge/charge cycle which can shorten their life.
What I am refering to is the spiral cell AGM design used by Optima(Johnson controls) and Exide in their spiral cell AGM batteries. Each cell has one large positive plate/seperator and negative plate rolled up like a roll of newspaper. This tightly wound design does not suffer from the plate material shedding,seperator breakage or cell connector failure of a conventional design. Even the non deep cycle spiral cell batteries will stand a dozen or more full deep discharge/charge cycles without obvious damage,while a conventional flooded cranking battery usually sees enough damage after one deep cycle(stone cold dead) from sulfation and plate shedding to reduce it's capacity and usually total failure from a shorted cell or broken cell connectors after 2-3 very deep discharges.
My comment is that I feel your experience with what I suspect was conventional design AGM batteries in a solar charged storage unit,unfairly casts a bad image of the Spiral cell AGM in a engine starting situation. I have found them to be far superior to any flooded cell battery in a engine starting situation with very long life and no need for maintenence to control corrosion of cables,battery boxes etc.

Both Optima and Exide also make marine hybrid cranking/deep cycle and true deep cycle versions of the Spiral cell AGM batteries to compliment the cranking batteries.

Replies:

• Re: Yes - it is the best buy, by far jdemaris 11:47:33 10/22/06 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]