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Re: Batteries
Interesting, they must not have marketed that well. I've never heard of a car battery with that feature. Although to fit a reserve battery in the same size package as a standard battery, it would seem the capacity of the everyday use battery would suffer. Especially if this was several years ago, before Lithium Polymer batteries became advanced/safe enough to be used for jump starting.
A separate portable jump start pack still seems like a much more cost effective option than buying a car battery with such a gimmick, err, feature, built in. The portable jump starter should last longer than the standard car battery will last, and the standard battery would likely not be available with as good of a CA and CCA rating if it also is making space for a jump starter, unless the marketing folks add the two together in the literature. I also suspect the total cost for such a battery would be higher than the cost to purchase the two separate batteries for their respective dedicated uses.
-Rod
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