I have an old 9 volt battery that I've measured at 7.2 volts. I've measured the resistance of the wires in the circuit I'm using, and it came out to 1.5 ohms. Therefore, according to Ohm's law I'd expect over 4 amps of current.
However, when I connect it up to a 0.2A fuse, it didn't blow. I tried connecting it in series with a multimeter, and it just read 0.35 mA. How come it's so low?