Digital meters are an absolute necessity when dealing with super-low current draw items like transistors, integrated circuits, etc. The current draw of an analog meter will load down a solid state circuit enough to give a false reading or even damage the circuit. DC charging systems, even those with alternators and solid-state regulators, are so low-tech and rugged that the analog meter is usually the best choice for diagnosis and repair. There's virtually no solid-state circuit (such as a computer) that carries hundreds, or even tens of amperes- - - - -more like milli- or micro-amps!
Jerry
