v8bertha Posted July 29, 2008 Share Posted July 29, 2008 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 Quote Link to comment Share on other sites More sharing options...
Ryan Posted July 29, 2008 Share Posted July 29, 2008 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 Quote Link to comment Share on other sites More sharing options...
Ex Member Posted July 29, 2008 Share Posted July 29, 2008 There is no need for special charging for an AGM. There is either something wrong with the battery or the charger. Quote Link to comment Share on other sites More sharing options...
western Posted July 29, 2008 Share Posted July 29, 2008 I charge my AGM odyseey's with a 11amp charger,it has no problems with getting them over 12.3v. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted July 29, 2008 Share Posted July 29, 2008 Do batteries have Annual General Meetings, then ? Mo Quote Link to comment Share on other sites More sharing options...
BogMonster Posted July 29, 2008 Share Posted July 29, 2008 Do batteries have Annual General Meetings, then ? Mo Quote Link to comment Share on other sites More sharing options...
western Posted July 29, 2008 Share Posted July 29, 2008 Do batteries have Annual General Meetings, then ? Mo just no hope for you is there Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted July 30, 2008 Share Posted July 30, 2008 I'll bet the meetings are highly charged affairs :D Mo Quote Link to comment Share on other sites More sharing options...
western Posted July 30, 2008 Share Posted July 30, 2008 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted July 30, 2008 Share Posted July 30, 2008 Thank you, Ralph Mo Quote Link to comment Share on other sites More sharing options...
Jon White Posted July 30, 2008 Share Posted July 30, 2008 Ok showing my ignorance now - what the hell is an AGM battery?? Jon Quote Link to comment Share on other sites More sharing options...
Guest WAFLY Posted July 30, 2008 Share Posted July 30, 2008 Like you I wasn't sure. But google is your friend http://www.metaefficient.com/deep-cycle-ba...-batteries.html Quote Link to comment Share on other sites More sharing options...
pugwash Posted July 30, 2008 Share Posted July 30, 2008 I'll bet the meetings are highly charged affairs Mo oh dear oh dear oh dear oh dear oh dear Maurice i think i like you better when you had a proper job to occupy your warped little brain Quote Link to comment Share on other sites More sharing options...
mmgemini Posted July 31, 2008 Share Posted July 31, 2008 Do the members trickle in to the meeting..... mike Quote Link to comment Share on other sites More sharing options...
TJ101 Posted July 31, 2008 Share Posted July 31, 2008 Do the members trickle in to the meeting.....mike Or do the just charge through the door !! Quote Link to comment Share on other sites More sharing options...
mmgemini Posted July 31, 2008 Share Posted July 31, 2008 Are the discussions electric ? mike Quote Link to comment Share on other sites More sharing options...
Superpants Posted July 31, 2008 Share Posted July 31, 2008 They are all very positive..... Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted July 31, 2008 Share Posted July 31, 2008 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 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.......... Quote Link to comment Share on other sites More sharing options...
Guest WAFLY Posted July 31, 2008 Share Posted July 31, 2008 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. Quote Link to comment Share on other sites More sharing options...
TJ101 Posted July 31, 2008 Share Posted July 31, 2008 Walfy,, have you not got any work to do !! Quote Link to comment Share on other sites More sharing options...
Guest WAFLY Posted July 31, 2008 Share Posted July 31, 2008 Not today or tomorrow, well to be honest the next time we're needed to blow stuff up is Sept . 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 Quote Link to comment Share on other sites More sharing options...
TJ101 Posted July 31, 2008 Share Posted July 31, 2008 So will be doing some stuff in the woods again . You coming? Might get your 110 dirty Should be, depending on date ,, away doing WRC Germany on the 11th Quote Link to comment Share on other sites More sharing options...
mmgemini Posted July 31, 2008 Share Posted July 31, 2008 Should be, depending on date ,, away doing WRC Germany on the 11th I did post honest........ Lucky you......Driving ? sack of spuds ? Melting spanners or just watching ??? I'm only a nosy bugger mind mik Quote Link to comment Share on other sites More sharing options...
Guest WAFLY Posted July 31, 2008 Share Posted July 31, 2008 Tim's driving I think Quote Link to comment Share on other sites More sharing options...
TJ101 Posted July 31, 2008 Share Posted July 31, 2008 I did post honest........Lucky you......Driving ? sack of spuds ? Melting spanners or just watching ??? I'm only a nosy bugger mind mik Mike,, pains me to say, but Walfy's right again Competing, Just say here starting to make the notes Sorry Dan, Back to Topic now Quote Link to comment Share on other sites More sharing options...
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