Just go back from hols to find my 3 month old Banner battery was flat, (very flat) so connected the Ctek MXS overnight, and it gets so far along the series of lights (number 4 or 5) then the warning light comes on. Swapped for a standard charger for 12 hours, and the voltage comes up to about 10.5 volts. Jump started it to get some more charge in it, and it runs fine, but won't re-start on it's own. Reconnected CTEK overnight, still only 10.5 volts so won't start, now on the standard charger again. Does this indicate a duff battery, as it's difficult to believe 2 chargers are both defective at the same time? Cheers