I have a Chinese battery charging control module (XH-M603) that I'm trying to use as a float charger for a 12v SLA battery. The problem is that the module only works correctly when it is connected close to the battery using short leads. When I connect the module using 30ft of wire (which is how I intend to use it) the module doesn't sense the battery correctly and won't output any current. The total resistance of the 30ft of wire is only about 0.6 ohms but that seems to be enough R to confuse the module's charging circuit.
Is there a simple way I can offset the effect of the long wire so that the module thinks it's close to the battery? -Thanks
Is there a simple way I can offset the effect of the long wire so that the module thinks it's close to the battery? -Thanks