David Lesher wrote in news:qt8bel$6hi$ snipped-for-privacy@reader2.panix.com:
Could be a bad, overcharged battery with greyed out cells, which are failed cells.
One way to get better longevity and lower maintenance is to replace that lead pig with a LiFePo. Quite expensive, but you get what you pay for.
Like LED light bulbs, the cost is amortized over the savings in longevity, in personal time and reduced lead exposure to yourself and the environment (for the battery).
It is like OLED TVs. Better costs more. LiFePo batteries are not more expensive to manufacture, they are like Donald J. Trump, and his psychological manipulations. They saw a lightweight product that does the same as this nasty, old, acid filled shitbox, and they knew that a jacked up price point would be met by demand. He played on the stupid half of America and fooled them all, and even some of the smart side doesn't see his bullshit.
They will always be overpriced and their makers will enjoy a higher ROI as a result.
BUT that is what you 'want' or 'need' to be able to relax. Unlike America and Trump. We need never put a joker like that in power again. But I digress... again.
Also, the charging of said battery is a low current affair, so the device keeping it topped off is less of a tax on your generator system.