Yesterday I noticed that the CD-R King in my area got in some 12 volt deep cycle batteries that where rated at 120 amp hours for around 6,000 Php. This seems like an incredibly good deal price wise, but I'm wondering how reliable these batteries actually are? The person that I talked to in the store said that it had a one year warranty, but I'm wondering if they will really stand behind it based upon experiences I have had in the past. Also, I picked it up off the shelf and would estimate that it weighed about sixty to sixty-five pounds, but not exactly sure. Shouldn't a battery rated for this many amp hours weigh closer to eighty to ninety pounds?