I believe that "lighter per amp hour" is accurate.

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Possibly a dangerous assumption since they are still lead-acid cells.


Some comparisons for you:

The 210-amp Meridian battery weighs 131 pounds. That calculates at 1.60 amps
per pound.

A 225-amp West Marine gel cell battery weighs 161 pounds, delivering only 1.39
amps per pound.

The 245-amp West Marine AGM battery weighs 158 pounds, rivaling but not
equaling the Meridian amp/pound output at 1.55 amps per pound.

The West Marine 12-volt flooded cell 8D is rated at 170 amps, and weighs 132
pounds. The equates to less than 1.29 amps per pound.

Without bothering to run a comparsion against every single battery on the
market,
it is possible to establish that these batteries are indeed "lighter per amp
hour"
(or, more amp hours per pound) than many batteries, including every variety of
8D Marine battery offered by the nation's largest marine retailer.