good work
friend, yesterday I had a similar case, the problem existed in an element of the battery that was null. how to do a test (to measure voltage on each element making the engine act hid. or traction, this with a little braking and measuring 1 by 1 and go against what is left with no load or short, also with a tip tester sets the + or - I will follow with another until you find what is breaking voltage. we'll find the damaged delete it and care for jumper until replacement. element to the client machine does not run out. sorry for something.