another source for agm batteries
Hi, It's time for me to consider replacing four of my batteries that are now 8 years old. I came across this on Amazon. Any one have an opinion on this company? http://www.vmaxchargetank.com/...
Forum Discussion
IT "DEPENDS"
When specifications wander all over the board, I believe it prudent to keep in mind an AGM battery is an AGM battery. There is actually very little room to maneuver the technology and the science behind it. An AGM with fewer thinner plates requires the same voltage diet as a heavier AGM.
Therefore say a Deka will not vary all that much from a Lifeline. I tend to consider comments and remarks from the "Big Boys" as carrying a lot more weight than what some of the smaller companies sales force is spouting.
The problem is this...how does a company approach the customer's pervasive belief that everything these days MUST BE plug-and-play. How do you reconcile charge profiles with different levels of discharge, temperatures, and indeed INEVITABLE abuse?
A maintenance charge profile for a battery that gets discharged over a period of a week, stays discharged for four days then goes and gets connected to a charger, is absolutely different than a battery that cycles to 50-60% off capacity every day then gets promptly recharged. How the profile must differ is to offset impending loss of capacity with the first example. Astute owners who tinker with charge profiles negate aggregate degradation of the capacity in ampere hours. But few AGM owners are willing to tinker. So "what" recharge profile is "best"?
Such ambiguities serve as fodder in "meetings". What do you tell the customer? If a company committed itself to an in-depth explanation of how charge profiles must vary (which is absolutely the best method as far as the battery is concerned), it would scare prospective customer "Joe Smudge" to death. So ash trays get filled and gallons of water get consumed as engineers go head to head with salesmen.
CHARGE "JUST RIGHT" TO MINIMIZE
A) Loss of capacity
B) Excess positive plate erosion
C) Live up to the AGM mantra CHARGES FASTER
d) The possibility of Smudge abandoning ship and going with a company that lies like 600 year old persian rug.
I've capacity tested numerous AGM batteries that customers absolutely swear are like "Brand New" yet render 40% of design amp hour capacity. And a similar number of "junk" AGM batteries that had near OEM design specification capacity.
And some salesman is going to say their company has the perfect pair of pants to fit either Laurel or Hardy?
Go with the charging recommendation commonality you find in the information as supplied by the major manufacturers.
Learn how to "Condition" an absorbed glass mat battery if you suspect the battery has been losing amp amp capacity.
Does this make sense to you?
When specifications wander all over the board, I believe it prudent to keep in mind an AGM battery is an AGM battery. There is actually very little room to maneuver the technology and the science behind it. An AGM with fewer thinner plates requires the same voltage diet as a heavier AGM.
Therefore say a Deka will not vary all that much from a Lifeline. I tend to consider comments and remarks from the "Big Boys" as carrying a lot more weight than what some of the smaller companies sales force is spouting.
The problem is this...how does a company approach the customer's pervasive belief that everything these days MUST BE plug-and-play. How do you reconcile charge profiles with different levels of discharge, temperatures, and indeed INEVITABLE abuse?
A maintenance charge profile for a battery that gets discharged over a period of a week, stays discharged for four days then goes and gets connected to a charger, is absolutely different than a battery that cycles to 50-60% off capacity every day then gets promptly recharged. How the profile must differ is to offset impending loss of capacity with the first example. Astute owners who tinker with charge profiles negate aggregate degradation of the capacity in ampere hours. But few AGM owners are willing to tinker. So "what" recharge profile is "best"?
Such ambiguities serve as fodder in "meetings". What do you tell the customer? If a company committed itself to an in-depth explanation of how charge profiles must vary (which is absolutely the best method as far as the battery is concerned), it would scare prospective customer "Joe Smudge" to death. So ash trays get filled and gallons of water get consumed as engineers go head to head with salesmen.
CHARGE "JUST RIGHT" TO MINIMIZE
A) Loss of capacity
B) Excess positive plate erosion
C) Live up to the AGM mantra CHARGES FASTER
d) The possibility of Smudge abandoning ship and going with a company that lies like 600 year old persian rug.
I've capacity tested numerous AGM batteries that customers absolutely swear are like "Brand New" yet render 40% of design amp hour capacity. And a similar number of "junk" AGM batteries that had near OEM design specification capacity.
And some salesman is going to say their company has the perfect pair of pants to fit either Laurel or Hardy?
Go with the charging recommendation commonality you find in the information as supplied by the major manufacturers.
Learn how to "Condition" an absorbed glass mat battery if you suspect the battery has been losing amp amp capacity.
Does this make sense to you?
