The age and cycle life of the battery also affect its internal resistance. As the battery ages and undergoes cycles, the internal resistance increases, leading to reduced current flow and decreased performance. Therefore, it is essential to monitor the battery’s age and cycle life and replace it when necessary.
Factors affecting a battery’s ability to act as an ideal voltage source include: Age of the battery: Older batteries tend to have higher internal resistance. Temperature: Extreme temperatures can affect the internal chemistry, leading to increased resistance. State of charge: A battery’s internal resistance can vary depending on its charge level.
Several factors affect the internal resistance of batteries, including: The temperature of the battery affects its internal resistance. When the temperature is high, the internal resistance decreases, allowing for better current flow. On the other hand, low temperatures increase the internal resistance, leading to reduced current flow.
The internal resistance of a battery is dependent on its size, capacity, chemical properties, age, temperature, and the discharge current. Internal resistance gets lower when the battery temperature increases. Thats why the cold winter weather reduces the power and capacity delivered by the bettery.
The internal resistance of the battery pack is made up of the cells, busbars, busbar joints, fuses, contactors, current shunt and connectors. As the cells are connected in parallel and series you need to take this into account when calculating the total resistance.
If the internal resistance increases on one of the battery cells this means the battery will supply less current and will probably heat up more than it should. There is a direct connection between the battery internal resistance and the C-rating of the battery pack. Typically the high C-rating batteries have lower internal resistance values.