What is an auxiliary battery?

While the primary focus of EV development often revolves around the propulsion battery, auxiliary batteries play an indispensable role in powering non-propulsion systems. From supporting safety features and infotainment systems to ensuring vehicle operation and redundancy, the auxiliary battery is an unsung hero in electric vehicle design.

What is auxiliary battery in an EV?

Ensuring Safety and Redundancy: The auxiliary battery in an EV acts as a redundancy mechanism. In case the main propulsion battery fails or depletes, the auxiliary battery ensures that essential systems like hazard lights, power locks, and emergency communication systems remain operational.

Why is auxiliary battery important?

In case the main propulsion battery fails or depletes, the auxiliary battery ensures that essential systems like hazard lights, power locks, and emergency communication systems remain operational. This function is critical for the safety of the occupants, especially in emergency situations or during breakdowns. 4. Managing Idle Power Consumption:

How does an auxiliary battery work?

An auxiliary battery works by storing electrical energy in a chemical form and converting it into usable power when needed. It is typically connected in parallel to the main battery and charged simultaneously through the vehicle’s charging system.

What types of electrical systems can auxiliary batteries support?

The auxiliary battery supports all 12v electrical systems: The exceptions are the air conditioning and heating systems. An auxiliary battery can also be used as a safety backup to support the main battery when required or to provide constant voltage for specific vehicle systems.

How to charge auxiliary battery?

This can be done through the vehicle’s charging system or using a dedicated battery charger. Storage: If the auxiliary battery is not in use for an extended period, it should be stored in a cool and dry place, preferably on a battery maintainer to prevent self-discharge.