I've just purchased a new Ford Transit van and have fitted a split charge relay fto charge 2 leisure batteries. However the batteries aren't charging. I've the same setup on other vans and it works perfectly.
It appears that the main battery is only getting charged when it's less than full meaning after starting up and driving the main battery is registering a full charge therefore the relay can't pick up any charging current to open the circuit to the leisure batteries.
I've tested this out by leaving the main beam headlights on whilst the engine is idling thus "draining" the main battery, the leisure batteries then get a charging current.
There must be some form of smart charging for the main battery, is there a possible solution for this that can be by-passed?
It appears that the main battery is only getting charged when it's less than full meaning after starting up and driving the main battery is registering a full charge therefore the relay can't pick up any charging current to open the circuit to the leisure batteries.
I've tested this out by leaving the main beam headlights on whilst the engine is idling thus "draining" the main battery, the leisure batteries then get a charging current.
There must be some form of smart charging for the main battery, is there a possible solution for this that can be by-passed?