You might also note that two of the Meridian 210 batteries would NOT fit in
the 8D battery box that you could buy at "the nations largest marine
retailer". The inside dimensions of the 8D battery box that West Marine
sells is 21" long (the Meridian is 22 inches long) and the height is only
10.5 inches tall (the Meridian is 12.6 inches tall).

There are two Meridian batteries on display, in a typical 8D box. The vendor
who retails these batteries in this area is not WM, and doesn't sell WM battery
boxes.

Remember that "8D" is a case size.

If your email address works, watch for a couple of photos. The batteries in the
box in the photo are combined to create 24-volts.



Trojan Battery: 8D Deep Cycle battery; 216 amp-hours, 132 lbs. 1.64
amp-hours per pound. That exceeds the Meridian!

By 6 amp-hours, and 1 pound, and takes up twice the space. Under the "twice the
power or half the space" theme of the article, 2 Meridians in the same
footprint would provide 420 amp-hours. That certainly exceeds 216.

How about comparing it against the gold standard in deep cycle, the good old
"golf cart" battery. Trojan battery, T-105. They are six volts so you need
two. 2x 62lbs = 124 pounds. 225 amp-hours 1.81 amp-hours / pound.
Doesn't that just blow away a Meridian?

If you want to digress from 12-volt 8D's to
other types and sizes of batteries, obviously the comparisons will change as
well.

I sure don't see how you can claim that the Meridian batteries are lighter
per amp-hour.

They are lighter per amp hour than some batteries. Not all batteries. They are
lighter per amp hour than every 8D battery shown in the WM catalog, as an
example. The major benefit of the capacity and case size of the Meridians is
the "half the space, or twice the power" option.