[Amel] RE: AGM batteries
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Sailorman <kimberlite@...>
Trevor, I have found that sealed maintenance free batteries can actually be opened. Many times the openings are under labels. I am able to add water to these batteries and also Use the higher voltage settings on the charger to equalize the batteries. Of course they must be opened to do this. Fair Winds Eric Amel Super Maramu #376 Kimberlite
From:
amelyachtowners@... [mailto:amelyachtowners@...] On Behalf Of seafeverofcuan@...
Hi Anne, I have seen Lifeline AGM installed apparently successfully in a Super Maramu but you need to understand how your total charging system works and adjust it all accordingly. I have had batteries badly abused and downright destroyed by others who were supposed to looking after the boat- it happens everywhere if you have to leave the boat for extended periods it is easier to pay for and find deep cycle wet cell. AGM really suffer if they get over charged. Next time I will look for wet cell that I can top up rather than sealed wet cell. The heat also plays havoc with performance and lifespan. There are endless postings on this site on this subject.
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seafeverofcuan@...
Thanks Eric.I have been able to do that on some brands. The last lot were Vetus which were expensive and really good performance. They were destroyed in under a year by the 30amp charger going rogue and interestingly I had a real good go at trying to rehydrate them as I had nothing to lose, but on this occasion they were heat welded and I couldn't get into them without destroying them. Having been through this several times I am now convinced that when I am off the boat for a number of months the best all round solution is to disconnect them all totally. Which is the only reason I could think of to justify the price for AGM as they degrade so slowly. I think if you are living on board and are on hand to care for them properly then you would have a better chance of getting value from AGM. Trevor
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