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AGM Batterys


v8bertha
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Hi all,

A friend of mine has put his AGM battery on a normal trickle charger for 3 days, and now it only holds about a 9v charge. I know that you are supposed to use a special type of charger with these batteries, so would the use of a normal charger cause any irreparable damage? Could the battery be repaired using the "special" charger?

Cheers all

Dan :)

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Hi all,

A friend of mine has put his AGM battery on a normal trickle charger for 3 days, and now it only holds about a 9v charge. I know that you are supposed to use a special type of charger with these batteries, so would the use of a normal charger cause any irreparable damage? Could the battery be repaired using the "special" charger?

Cheers all

Dan :)

Dan,

Try Barden Batteries in Segensworth. They were very helpful when I bought my truck battery and bits and pieces. They sell a number of AGM batteries so should be able to help. I dealt with a guy (South African I think) who seemed to know his stuff.

Ryan

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Ok showing my ignorance now - what the hell is an AGM battery??

Jon

Come on Jon wake up............ keep up with the plot ......... especially in your profession :rolleyes::lol:

AGM = Absorbent Glass Mat .................... they are a 'dry' cell that thinks it is a normal wet cell.

As I cant be @rsed to do all the typing.......... look here...... its sort of right.........http://en.wikipedia.org/wiki/Absorbed_Glass_Mat

Unlike Gel cells, I thought you charged these as you would a wet cell.......... :unsure:

:)

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Guest WAFLY

OK it's alright Ian I'll type it out for you ;);)

AGM

is a newer

type of sealed battery uses "Absorbed Glass Mats", or AGM between

the plates. This is a very fine fiber Boron-Silicate glass mat. These

type of batteries have all the advantages of gelled, but can take much

more abuse. AGM

batteries have several advantages over both gelled and wet (flooded)

batteries. Since

all the electrolyte (acid) is contained in the glass mats, they cannot

spill, even if broken. This also means that since they are non-hazardous,

the shipping costs are lower. In addition, since there is no liquid to

freeze and expand, they are practically immune from freezing damage.

Nearly

all AGM batteries are "recombinant" — meaning that the

oxygen and hydrogen recombine inside the battery. These use gas phase

transfer of oxygen to the negative plates to recombine them back into

water while charging and prevent the loss of water through electrolysis.

The recombining is typically 99+% efficient, so almost no water is lost.

The

charging voltages are the same as for any standard battery — no

need for any special adjustments or problems with incompatible chargers

or charge controls. And, since the internal resistance is extremely low,

there is almost no heating of the battery even under heavy charge and

discharge currents. The Concorde (and most AGM) batteries have no charge

or discharge current limits.

AGMs

have a very low self-discharge — from 1% to 3% per month is usual. This

means that they can sit in storage for much longer periods without charging

than standard batteries. The Concorde batteries can be almost fully recharged

(95% or better) even after 30 days of being totally discharged.

AGMs

do not have any liquid to spill, and even under severe overcharge conditions

hydrogen emission is far below the 4% max specified for aircraft and

enclosed spaces. The plates in AGM’s are tightly packed and rigidly mounted,

and will withstand shock and vibration better than any standard battery.

Even

with all the advantages listed above, there is still a place for the

standard flooded deep cycle battery. AGMs will cost 2 to 3 times as

much as flooded batteries of the same capacity. In many installations,

where the batteries are set in an area where you don’t have to worry

about fumes or leakage, a standard or industrial deep cycle is a better

economic choice. AGM batteries main advantages are no maintenance, completely

sealed against fumes, hydrogen, or leakage, non-spilling even if they

are broken, and can survive most freezes.

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Guest WAFLY

Not today or tomorrow, well to be honest the next time we're needed to blow stuff up is Sept :o:o . Off to Kent on cse next week then 2 weeks hols. So will be doing some stuff in the woods again ;) . You coming? Might get your 110 dirty :P:P:P:P

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I did post honest........

Lucky you......Driving ? sack of spuds ? Melting spanners or just watching ???

I'm only a nosy bugger mind :lol:

mik

Mike,, pains me to say, but Walfy's right again :o:ph34r:

Competing, :D Just say here starting to make the notes

Sorry Dan, Back to Topic now :rolleyes:

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