Yeah it does seem exceptional. On a starter battery obviously different, I've generally regarded 12.6/12.7 volts to be full charge, 12.4 as half and 12.2 and below as flat. Mine at 12.8 seems very high (tested with a Fluke multi meter) obviously its a leisure battery which you could class for arguments sake as traction or semi traction battery, a bit like a milk float battery. I was just curious as to how long any one else has had out of there battery. obviously its a quality name and as I've said i switched the mains on around once a month usually overnight. i only bought the caravan around last august/September and presume its the original and was hoping it would last this season out if we get a chance to use it!