A question to which I think I knowthe answer
When I brought the rib home the battery was dead flat. I charged it for 48 hrs and then put a voltage tester accross it. It only read 10.5v.
The charger was charging at 15v and if I put the tester accross then disconected the chager the volts just dropped away. It has been constant at 10.5v for about 5 hours.
Is it possible that the Mariner 40 only needs a 10.5v battery and that is what is fitted or is it, as I suspect, of no use and should be a 12v one. There is no voltage printed on it only an amperage.