mobeewan wrote:
I use the Walmart Everstart deep cycle batteries and have no issues with them since learning to properly charge and fill batteries. I talked with a rep at Johnson Controls a couple years ago. Any of the Walmart Everstart "deep cycle" batteries that have DC in the number (i.e. 24DC, 27DC, 29DC, 31DC) are supposed to be true deep cycle batteries and not "marine starting" (deep cycle/starting) batteries. Those that have MS in the number (i.e. 24MS, 27MS, 29MS, 31MS) are supposed to be "marine starting" (deep cycle/starting) batteries.
I used these for a few years. They were marked as "deepcycle/starting" right on them but had a different brand name ISTR Energizer, not sure now. Walmart here recently changed them all to Everstart. They have the same exact spec label on top but now say "deep cycle" on the battery but still show "deep cycle/starting" here in their description.
The spec label on top says 675 CCA, 850 MCA, 180RC, and 120AH. I think that is a real AH number from what I got using them as shown on the Trimetric.
http://www.walmart.ca/en/ip/everstart-marine-battery-27dc-850n/6000016951063They worked for camping off-grid, but were very difficult to "recover" to 100% at home after doing several 50-90s in a row. Way too difficult.
Now I use 6s for that and they "recover" easily without all that agony. I would only use these 27DCs again for shallow cycles as when on solar, but never again for 50-90s. I also have T-1275 ("real" deep cycle 12s) and they also "recover" easily same as the 6s.
So based on all that, IMO these 27DCs are not "real" deep cyclers like the T-1275 is, and are meant to be for boat trolling use.