Now remember, that a model for a battery is an ideal voltage source, internal resistance. when you start pulling current from the battery and complete the load there will be a voltage drop rI corresponding to the voltage drop due to the internal resistance this will cause the voltage of the cell to be lower than the voltage of the voltage source.
This voltage drop is caused by the battery’s internal resistance, which increases as the battery discharge rate increases. The resulting decrease in voltage can cause problems for devices that rely on a constant supply of power, such as laptop computers or cell phones.
Yes, it does get lower. The effect you see is called internal resistance: A practical electrical power source which is a linear electric circuit may <...> be represented as an ideal voltage source in series with an impedance. This impedance is termed the internal resistance of the source. Put simply, a battery is not an ideal voltage source.
When the voltage of a battery gets too low, it needs to be replaced. As any battery ages, it will slowly lose its ability to hold a charge. This is due to a number of factors, including corrosion, electrolyte evaporation, and plate shedding. As the battery’s voltage drops, so does its capacity to power your devices.
When a battery is discharging, the voltage across its terminals will decrease for a number of reasons. Firstly, as the battery discharges, the concentration of reactants in the electrodes will decrease and this will lead to a decrease in the potential difference between them.
As any battery ages, it will slowly lose its ability to hold a charge. This is due to a number of factors, including corrosion, electrolyte evaporation, and plate shedding. As the battery’s voltage drops, so does its capacity to power your devices. There are a few things you can do to prolong the life of your battery and prevent voltage drop.