The battery voltage should be about 13 volts at no-load, and the load voltage should not be lower than 11 volts. It is normal. If it is lower than this voltage, it may be difficult to start. After starting, the 12-volt vehicle voltage should be between 13.5-14.5 because the generator starts to generate electricity. The .24 volt car is between 27 volts and 29 volts. After starting, the generator voltage is measured. Since the battery and the generator work in parallel, the battery voltage cannot be measured at this time. Your battery is 11 volts. I don’t know if you measured it with a battery measuring instrument or a multimeter. If it is measured with a multimeter, it is obviously a bit low. Low, if so, you should remove the battery for supplementary charging, otherwise it will have a certain impact on the battery life.

People often say: the battery voltage is 12V. The 12V mentioned here refers to the most basic parameter of the battery - the nominal potential (unit V). The nominal potential of a lead-acid battery cell is 2V, and the nominal potential of a battery connected by 6 cells in series is 12V. The power supply used by electric vehicles is generally composed of 2 to 5 12V batteries connected in series to form 24V, 36V, 48V, and 60V battery packs. Here, it refers to the nominal potential of the battery pack, which is determined by the characteristics of the active material used in the battery. determined theoretical value.

In fact, there are differences in the voltage and nominal potential of the battery under different conditions. For example: a normal lead-acid battery with a nominal potential of 12V, at the end of the charging process, the charging polarization reaches the maximum value, and the voltage can reach 14.4V or higher; at the end of the discharge, the discharge polarization reaches the maximum value, The voltage can be as low as around 9V. After charging or discharging is stopped and left for several hours, the polarization voltage (concentration polarization) disappears completely. The potential of this 12V battery can be between 13.8V (after full charge) and 11V (after discharge). The difference is caused by a change in the state of the active material inside the battery.