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post #3 of Old 10-14-2013
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Re: Problem with new batteries keeping the charge

New batteries need to be "exercised" a few times before they behave as you'd expect. They need to be discharged to about half capacity, then FULLY recharged. This takes more than 3-4 hours, no matter the size of your charger.

The comment above re: self-discharge is correct. And, solar panel(s) for maintaining a full charge is a good idea, too, since if resting voltage falls below about 13.4-13.6vdc sulfation rates increase, shortening battery life.

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