Voltage measurement

In order to measure the voltage, for example at the battery terminals, the wire device with the negative terminal connected to the negative terminal of the battery or "mass". The positive terminal connected to the positive terminal of the battery or check the wire. If the instrument shows only 10.4 V, this indicates circuit in one of the cells of the battery. We should also check the battery voltage during start-up starter - the resulting value 5 indicates a malfunction of the battery.