In India, most EV manufacturers offer a battery warranty of 8 years or 1,60,000 km (whichever comes first), with a State of Health (SoH) threshold of 70%: meaning if your battery’s capacity drops below 70% of its original value within this period, you’re entitled to a free replacement or repair. This covers manufacturing defects, cell failures, BMS faults, and excessive capacity degradation.
What it does not cover: physical damage from accidents or floods, unauthorised modifications, improper charging, or degradation that stays above the 70% threshold. Out-of-warranty battery replacement in India costs between ₹6–16 lakh, depending on the model and pack size. Tata Motors, Hyundai, Kia, MG Motor, and Mahindra all follow the 8-year/70% SoH standard. BYD’s India-market terms are less clearly documented and should be verified in writing before purchase.
What Does an EV Battery Warranty Actually Cover?
Most manufacturers in India offer a separate battery warranty on top of the standard vehicle warranty. The coverage has two layers.
Defects and failures. If your battery stops working due to a manufacturing defect, cell failure, BMS fault, or thermal event that wasn’t caused by user abuse, that’s covered. Full replacement or repair at no cost.
Capacity degradation below a threshold. This is where it gets interesting. Almost every EV battery loses some capacity over time. That’s just electrochemistry. Manufacturers don’t warranty against any degradation. They warranty against excessive degradation, meaning your battery drops below a defined State of Health (SoH) percentage within the warranty period.
The standard threshold in India is 70% SoH. Tata Motors, MG Motor, and Hyundai all use this figure. What it means in practice: if your battery’s usable capacity drops below 70% of its original rated capacity before the warranty ends, you’re entitled to a replacement or repair. If it degrades to 71% or 72%, that’s within spec. No claim.
How Long Is the EV Battery Warranty in India?
The standard across most Indian EV brands is 8 years or 1,60,000 km, whichever comes first.
| Tata Nexon EV, Punch EV, Curvv EV | 8 years / 1,60,000 km | 70% |
| MG ZS EV, Windsor EV | 8 years / 1,60,000 km | 70% |
| Hyundai Creta Electric, Ioniq 5 | 8 years / 1,60,000 km | 70% |
| Kia EV6, EV9 | 8 years / 1,60,000 km | 70% |
| Mahindra BE 6e, XEV 9e | 8 years / 1,60,000 km | 70% |
| BYD Atto 3, Seal | 8 years / 1,50,000 km | Verify with dealer |
The km cap matters more than most buyers realise. If you’re running 30,000+ km per year- cab aggregator use, a long daily commute- you could hit 1,60,000 km in under six years. At that point, you’re outside warranty regardless of the calendar date.
What Is State of Health: and Why Does It Matter?
SoH is a percentage that represents how much usable energy your battery can store compared to when it was new. A brand-new battery starts at 100%. After several years of charging and discharging, it drops.
What drives SoH decline faster than normal:
- Frequent DC fast charging above 80% SoC.
- Regular charging to 100% and leaving the car sitting at full charge.
- Operating in extreme heat without adequate thermal management
- Deep discharges: running the battery to near 0% frequently
Most EVs sold in India today have active thermal management that slows this process. Tata’s Ziptron and Acti.ev platforms, Hyundai/Kia’s liquid-cooled packs all help. But built-in management only does so much: charging habits matter equally.
How do you check your battery’s SoH?
Most EVs don’t display raw SoH on the instrument cluster. Your options:
- Tata vehicles: SoH is visible in the Tata Motors EV app under Battery Health
- Hyundai/Kia: Requires dealer scan using GDS (Global Diagnostic System): You can request this during a service visit.
- MG: iSMART app shows battery health in select variants
- Third-party option: OBD2 adapters with compatible apps like Car Scanner can pull SoH data on most CAN-bus accessible vehicles
Getting a SoH check annually makes sense from year 4 onward, especially if you’re planning to resell.
What’s Not Covered: The EV Battery Warranty Exclusions You Need to Know
Battery warranties in India carry a list of exclusions that manufacturers write broadly. The ones that catch buyers off-guard:
Physical damage. If the battery pack is damaged from an accident, flood, or road impact, the warranty is void. This is especially relevant in Indian conditions: waterlogged parking, monsoon flooding, and pothole impacts are not theoretical risks here. A flooded car’s battery damage gets treated as a physical event, not a manufacturing defect.
Unauthorized modifications. Third-party firmware updates, non-OEM charger hardware, or range-extender mods void coverage. Some warranty documents extend this to non-BIS-certified home charging equipment: keep your charger purchase receipts and installation records.
Improper charging. Using damaged cables or non-certified public chargers can create grounds for claim rejection. It’s worth keeping a record of your primary charging locations.
Commercial use on personal variants. If you register a personal-variant EV for Ola/Uber-style aggregator work, some OEMs explicitly exclude warranty coverage. Tata and MG both sell commercial fleet variants separately for exactly this reason.
Degradation within spec. Any degradation above 70% SoH is classified as normal wear. A battery at 72% capacity won’t get a warranty claim approved.
The practical point: read the warranty card before accepting delivery, not after you need it. Ask the dealer to walk you through the exclusion list specifically.
What Does EV Battery Replacement Actually Cost?
This is the number most buyers want to know, and most salespeople avoid quoting.
Outside of warranty, battery replacement in India is expensive. Based on available service data and owner-reported costs:
- Tata Nexon EV (30.2 kWh pack): ₹6–8 lakh for full pack replacement
- Tata Nexon EV Long Range (40.5 kWh): ₹9–11 lakh estimated
- MG ZS EV (50.3 kWh): ₹12–15 lakh estimated
- Hyundai Creta Electric (51.4 kWh): ₹13–16 lakh range
These figures are approximate. Actual quotes vary by service centre, whether the OEM offers refurbished packs, and any recycling trade-in adjustments. The broader point: out-of-warranty battery replacement can cost 40–60% of the car’s original purchase price on smaller-battery models.
This is why the 8-year warranty matters, and why evaluating SoH threshold and exclusion terms before purchase is worth the effort.
Which Brand Offers the Best EV Battery Warranty in India?
There’s no single answer because it depends on your usage pattern.
For high-km, long-distance use: Hyundai and Kia are the stronger choice. Liquid thermal management, 70% SoH threshold, an established service network, and clearer warranty documentation all work in their favour. The Creta Electric’s 51.4 kWh pack has genuine global long-term data behind it.
For domestic brand coverage, Tata Motors is the most transparent about SoH tracking via their app. The Ziptron chemistry has been on Indian roads since 2019: real-world degradation data exists at scale, unlike newer entrants. Tata also has the widest authorised service footprint for warranty claims outside major metros.
Worth double-checking before buying: BYD’s India-market warranty terms have been less clearly documented compared to Korean and domestic brands. Ask for the written warranty card: not a verbal commitment from the sales executive, before signing.
How to Make an EV Battery Warranty Claim in India
If you think your battery has degraded below threshold or has a defect:
- Get a written SoH reading from an authorised service centre, not just a verbal confirmation.
- If the reading is below the warranty threshold, raise a warranty claim in writing. Email the OEM’s customer care directly, not just through the dealership.
- The OEM will run their own diagnostic before approving the replacement. In India, currently, this process typically takes 2–6 weeks.
- Keep all service records, charging logs from your vehicle app, and the original warranty document.
If a legitimate claim is rejected, the Consumer Protection Act 2019 and the National Consumer Disputes Redressal Commission (NCDRC) are your escalation paths. There are precedents in India where EV owners have won battery replacement orders through consumer courts: it’s a real option, not just a theoretical one.
Frequently Asked Questions
Does fast charging void my electric car battery warranty in India? No. Using public DC fast chargers doesn’t automatically void the warranty. Most OEMs allow regular fast charging within the car’s supported specifications. Daily 100% DC fast charging isn’t recommended for long-term battery health, but it won’t invalidate a warranty claim on its own.
Does the battery warranty transfer if I sell the car? In most cases in India, the battery warranty is tied to the vehicle (VIN), not the registered owner. It transfers with the car. Get written confirmation from the dealer when buying used: not a verbal assurance.
Is 70% SoH threshold actually enough? Depends on your use case. A 40 kWh battery at 70% SoH holds 28 kWh usable. For a city commuter doing 60–80 km per day, that’s workable. For someone regularly covering 200+ km or needing highway range, degradation to 70% starts to bite. Factor this into which model and pack size you buy.
Can I extend my EV battery warranty in India? Some brands do. Tata Motors offers extended warranty plans that cover the battery beyond the standard 8-year period. Evaluate these at the time of purchase: that’s when you have negotiating leverage.
The Bottom Line
EV battery warranty in India has largely standardised around 8 years/1,60,000 km with a 70% SoH threshold, but what sits inside that headline varies by brand in ways that matter when you actually need to file a claim.
Before buying, ask for the written warranty document (not the brochure version), check whether the km cap fits your usage pattern, and understand what 70% SoH means for your actual daily driving requirement.
To compare specific models side by side: battery specs, real-world range, charging speeds, and warranty terms: EVUnlock’s EV listings cover every major electric car currently available in India.
Information in this article is based on publicly available manufacturer warranty documentation and verified service data as of 2025. Out-of-warranty replacement cost estimates are indicative: confirm current figures with authorised service centres for your specific model.
Gagandeep Singh
Founder, EV UnlockGagandeep Singh is an Electronics and Communication Engineering graduate from BGIET Sangrur and holds an M.Tech in eMobility from IIT Madras (CODE IITM). He is the founder of EV Unlock, an independent electric vehicle research platform. His work combines engineering knowledge, SEO strategy and electric mobility research to deliver verified EV specifications, buying guides and charging information that help buyers make confident, informed decisions.