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The advantage is they are maintenance free and can't leak. The Optima is an AGM battery. Are they "better"? In general I'd say no. They have some advantages in not freezing and lower sitting discharge rates. On a regular car, I don't see the nee.
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James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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