Flooded vs AGM

From EVDL

http://www.nabble.com/Discover-agms---td13508499ef25542.html#a13514772

If you are the sort who looks after your batteries, then it would be difficult to recommend any sealed battery over floodies in terms of cost. You will need a decent charger to hope to approach the rated cycle life for any type of battery. If you need to locate batteries in the passenger compartment or someplace where access for routine maintenance will be difficult, then sealed batteries may be appropriate. If you want a stiffer pack, then AGMs may be appropriate.

Also


A 6V flooded battery is typically rated to about 700 cycles @ 80%DOD, and this will increase dramatically at shallower DOD, just as it does for the AGMs.

Without digging up the Discover specs to fins a cycle vs DOD plot, I would expect them to deliver about 300-400 cycles @ 80%DOD, or about 1/2 the cycles of the floodeds.