Re: [Amel Yacht Owners] Batteries - What type house batteries to use & what voltage charge from Solar/Wind?
Ann-Sofie Svanberg <kanalmamman@...>
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We have had AGM high performance batteries, first time the bank was based on 12v AGMs best available at the time 2007. Second attempt to the AGMs was with high performance Golf Cart batteries, 6v. Problems with both attempts was that they aged fast even if they were less than twice bellow 25v. Both sets has been very expensive and the chargers had been set to charge AGM which is a different charge program.
Last change was done 2015, January, when we decided to go back to standard Trojan Golf Cart Led Acid batteries, 6v. They have behave extremly well since and despite that decreased AH with 70 we today have better battery capacity than ever. This taking of the input we have from solar panels and Wind Generator.
The struggle you have to live with is an investment that is far cheaper than AGMs and you have to check the water level every fourth week.
Problems with the Lithium technology is that the demand on the charger unit and additional control units are very high to prevent that temperature on the batteries are going to high. Quality seems also still be a problem.
Talking to sales people is one thing, living with the solution is another. We do have a low current draft on our boat despite having two fridges and one freezer running at all time which make the decision rather easy. We have a 8+1 battery box solution, if you have the twelfe battery box solution you are well of.
Take a look at the Trojan site at check for their allowed limits on individual batteries,, use that as a quality check regardless of choice of battery type and battery producer.
Lady Annila, SM #232
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