EV Lifetime Battery Warranty Explained: The Truth Behind the Hype

The word "Lifetime Battery Warranty" sounds like a relief for every EV buyer, just giving a hope of endless kilometers without the fear of battery degradation. But before you sign a check for your next EV, it is important to understand what manufacturers mean by saying that they are giving lifetime battery warranty for their cars.

The lifetime warranty is not a bridge to get the new battery whenever you want, but it is a calculated insurance policy subject to strict technical rules. 

The Three Pillars of Battery Warranty

A battery warranty is always based on three main pillars and is never unconditional. 

1. Time Limit: A set number of years (For eg, 8, 10, or 15 years). 
2. Usage Limit: A specific number of kilometres driven. 

3. State of Health (SoH): This is an important parameter, as generally 70% manufacturers only replace the battery if battery health drops down rapidly, which is not applicable for standard battery degradation. 

Mahindra Vs Tata: Battery Warranty

Let us show the contrast of battery warranty between two major Indian companies. Mahindra’s “lifetime warranty” is restricted to the first owner and private registration. This means if you sell the car, the warranty comes down to a standard 10-year or roughly 1.8-2 lakh km whichever comes first. 

In comparison, Tata Motors defines the “lifetime warranty” by aligning it with “life of the vehicle”, which is typically 15 years with unlimited kilometers specifically for private use. With Tata, lifetime warranty is subjected to time-centric rather than owner-centric, which results in better resale value, although benefits can vary according to the manufacturers. 

When is the Warranty Void?

It is very important for the EV owner to understand that he will not be covered in every scenario. Your warranty could be rejected for:

1. Physical Damage: Accident or underbody hits.
2. Flood Damage: Contact with water from natural calamities. 
3. Modifications: Unauthorized addition of electric accessories or tampering. 

Conclusion

Lifetime warranty is an added advantage, which provides protection to your EVs batteries against premature failure, but it is not a tool to get a free replacement scheme. Thus it is important for every EV user to go through the details regarding sale and exclusions to ensure your EV ownership remains seamless.