sorry this has probably been covered before but we have a elecsol 100 aph leisure battery just under 2 years old and it let us down this week end whilst offline so did an experiment today after returning home. battery showing 12.7 with nothing on and no hook up turned tv on and bat showed 12,2 left tv running 1 hour later still 12.2 , 30 mins later still 12.2, 30 mins later battery showing 7.7 . turned tv off. slowly battery returns to 12.1 over the next 2 hours. obviously something wrong and what are we doing wrong? return journey yesterday 1.30 mins surely that should have charged battery fully. when not in use normally kept on ehu. is that the correct thing to do