Deka DC31DT battery? Deep Cycle?

MrWizard wrote:
That battery is approx 80 amp hrs
The first number 225*23 gives 86 amp hrs
The second number 185*25 gives 77 amp hrs per battery
Less then 200 amp hrs per pair
Quite a bit less than two golf car batteries at 220~230 amp hrs

Hmm...

The GC-2's he said were 205@20amps.

I have both Deka and Crown written down, so not sure which was the initial answer and which one was after he checked.

The GC-2 number by your calcs would be substantially lower than the 205/215 ah that I've heard people quote for the Duracells.

According to the Sams Club page for the Duracell GC-2

Description Member reviews & questions Policies & plans

Description

For applications that requires deep-cycle power, this is the battery of choice. Use it in your personnel carrier, aerial lift, electric vehicle, golf car, boat, RV, floor scrubber, or road sign. The biggest innovations lie inside the battery, where we use heavier grids, plates with higher density oxide and improved glass mat envelope separators. The result? Longer life cycles and superior cycle-life performance. The exterior features represent powerful thinking as well. Engineers have designed a battery that is as durable and user-friendly as possible. The heavy-gauge polypropylene cases have been specially engineered to take a pounding without damaging the cells. Twist-and-release vent caps make removing caps a snap, and we’ve maximized convenience by designing a new lifting system.

Specifications

20 amp hour rate:215
5 amp hour rate:157
6 amp hour rate:156
Battery Electrolyte Composition:Acid
Battery End Type:Top Post
Battery Purpose:Deep Cycle
BCI Group Size:GC2
Contents:ONE EACH
Freight Class:65
Minutes at 25 amps:395
Minutes at 75 amps:105
Terminal Type:DIN
Volts:6

Now I'm REALLY having trouble reconciling the "20 amp hour rate" of the GC2 vs Group 31 :h

(I don't recall the exact thread title, but it is the one where folks speculating the Duracell is the rebranded Trojans at Costco)