Difference between Traction and Starter Batteries. Batteries are in demand in various fields, used to power automobiles and special equipment. Let’s explore the purpose of these devices and find out the differences between traction and starter batteries.

Function of Devices:

Batteries act as energy storage units, containing electrode plates that charge through interaction with special compounds, with these parts serving as cathodes and anodes.

The stored energy is later used for various purposes, such as starting an engine, providing illumination, or supporting the operation of specific mechanisms and systems. The key parameters of these devices include voltage, capacity, allowable discharge depth, cranking power, and more.


The classification of devices into two categories is based on their specific purpose. The difference between a traction battery and a starter battery lies in the fact that models of the first type are designed for cases where it is necessary to continuously and stably supply energy to certain machinery. Traction batteries operate, for example, in warehouse forklifts, transport carts, cleaning vehicles, boats, and wheelchairs.

However, a starter battery is suitable for a regular car. With an impressive cranking power, it contributes to starting the engine. At that moment, the battery releases a significant amount of energy, which is then replenished during the vehicle’s movement from the generator.

Focusing on the details of the devices, you can observe that the plates of traction models are quite massive, resulting in less wear. To withstand the load from these elements, the casing also has thick walls. In contrast, starter device plates are thin and closely arranged. This design ensures the generation of sufficient current to start the engine. It is worth noting that starter batteries are always located under the hood, emitting harmful fumes. Meanwhile, traction devices are characterized by low gas emissions.

What is the difference between traction and starter batteries regarding their susceptibility to deep discharges? Traction battery samples are not afraid of such conditions. In contrast, a starter battery shows noticeable sensitivity in this regard. If this unit is deeply discharged several times, it will lose a significant portion of its qualities or may even fail. It requires careful monitoring.