Answered 15 July 2026
If you are looking for the electric car with the absolute biggest battery pack in India as of **2026**, the answer depends on whether you are looking at the ultra-luxury segment or mainstream passenger cars.
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## 1. Absolute Largest Battery (Ultra-Luxury Segment)
The crown for the largest battery in any production EV sold in India belongs to Mercedes-Benz.
### Mercedes-Maybach EQS 680 SUV & EQS SUV 580
* **Battery Capacity:** **122 kWh**
* **WLTP Range:** Up to 642 km
* **Starting Price:** ~₹1.42 Crore – ₹2.25 Crore (ex-showroom)
* **The Vibe:** This massive battery pack powers a rolling palace of luxury. Because it is so heavy, the range is actually slightly less than its sedan sibling, but it easily takes the prize for the largest physical battery capacity on Indian roads.
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## 2. Premium Luxury Segment (100 kWh to 115 kWh)
If you want massive battery capacity but in a slightly different flavor:
* **Audi Q8 55 e-tron / Sportback:** Comes with a **114 kWh** battery pack, offering a certified WLTP range of up to 600 km.
* **Mercedes-Benz EQS 580 Sedan:** Features a **107.8 kWh** battery. Because of its highly aerodynamic sedan shape, it squeezes out India’s longest certified driving range at an astounding **857 km (ARAI)** on a single charge.
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## 3. Mainstream & Mid-Range Segment (Biggest Batteries under ₹30 Lakh)
For more "attainable" electric vehicles, Indian manufacturers have stepped up significantly, crossing the 70+ kWh mark.
### Mahindra XEV 9e / BE 6
* **Battery Capacity:** **79 kWh** (Pack Three)
* **Claimed Range:** 542 km – 656 km
* **Price Range:** ~₹18.90 Lakh – ₹22.40 Lakh (ex-showroom)
* **The Vibe:** Built on Mahindra's INGLO platform, this battery pack is currently the largest you can get in a locally produced, mass-market electric SUV in India.
### Tata Harrier EV / Sierra EV
* **Battery Capacity:** **75 kWh**
* **Claimed Range:** Up to 665 km (ARAI)
* **Price Range:** ~₹18.79 Lakh – ₹30.43 Lakh (ex-showroom)
* **The Vibe:** Tata's flagship EVs built on the `acti.ev` platform boast massive 75 kWh battery packs, featuring Vehicle-to-Load (V2L) and Vehicle-to-Vehicle (V2V) charging capabilities (essentially acting as massive power banks).
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> **Summary:** The **Mercedes-Benz/Maybach EQS SUV** has the largest battery in India overall at **122 kWh**, while **Mahindra's XEV 9e** holds the top spot for mass-market buyers with a **79 kWh** battery.