With MG, Tata and Maruti now offering battery as a service on popular models, the model promises cheaper EVs but raises questions on long-term costs and resale
In February 2026, Tata Motors and Maruti Suzuki launched battery as a service options on the Punch EV and e-Vitara. MG Motor, the pioneer, already offers it on the Comet EV, Windsor EV and ZS EV. The move comes as EV sales in India seek fresh momentum after initial growth slowed. Battery costs still form 30 to 40 per cent of an electric vehicle’s price. Battery as a service separates the pack from the vehicle and lets buyers pay only for usage.
This shift matters because high upfront prices have kept many buyers on the fence. Battery as a service cuts the entry ticket by several lakh rupees. Yet early data show adoption remains below 3 per cent of total EV sales. The model, therefore, sits at the centre of the debate on whether it truly accelerates adoption or merely masks higher lifetime expenses.
The Rise of Battery as a Service in India
Battery as a service first appeared with the MG Windsor EV in 2024. By early 2026, three mass-market makers had adopted it. MG leads with three models, while Tata and Maruti followed within days of each other. SUN Mobility continues to operate swapping networks primarily for two- and three-wheelers through its IndianOil joint venture. Passenger car battery as a service, however, remains the domain of these three OEMs.
The timing aligns with government targets for electric mobility. Battery prices have fallen, yet still deter buyers in a price-sensitive market. Battery as a service, therefore, addresses the single largest cost barrier without waiting for further cell-cost reductions.
Key Players and Current Offerings
MG Motor offers the widest range. The Comet EV starts at ₹4.92 lakh plus ₹3.2 per kilometre. The Windsor EV starts at ₹9.99 lakh, with a rental rate between ₹3.9 and ₹4.5 per kilometre, depending on battery size. The ZS EV lists from ₹13 lakh plus ₹4.5 per kilometre. Tata Punch EV entered the segment at ₹6.49 lakh plus ₹2.6 per kilometre, the lowest rental rate. Maruti Suzuki e-Vitara follows at ₹10.99 lakh, plus ₹3.99-₹4.39 per kilometre for its 49 kWh and 61 kWh packs.
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These prices exclude the battery pack itself. Full-ownership variants cost ₹2.5 lakh to ₹3.5 lakh more at launch. Battery as a service, therefore, delivers immediate showroom savings yet transfers the ongoing expense to the buyer through metered usage.
How Battery as a Service Operates
Under battery as a service, the vehicle maker or financier retains ownership of the battery. Buyers sign a separate rental agreement that charges a fixed rate per kilometre driven. The rate covers battery depreciation, maintenance, replacement and warranty. The vehicle maker handles all battery-related service through its network. Transition between models remains seamless because the same pack fits multiple variants.
Rental agreements typically assume minimum monthly usage. Actual billing occurs through connected telematics that record the distance covered. Battery as a service, therefore, removes range anxiety and battery-replacement fear for the customer. Providers guarantee performance for the duration of the contract. Data on long-term battery health, however, remains limited because the model is still young in India.
Owning Versus Renting the Battery
Owning the battery means paying the full vehicle price upfront and enjoying lower running costs thereafter. The buyer claims full asset value at resale and faces no per-kilometre charge. For drivers covering more than 15,000 kilometres a year, the cumulative rental cost often exceeds the initial premium within three to four years. Ownership also attracts only 5% GST on the entire vehicle.
Renting through battery as a service lowers the on-road price by 25 to 35 per cent. Monthly outgo depends on actual kilometres. For example, a Tata Punch EV user driving 60 kilometres daily pays roughly ₹4,680 a month in battery rental at ₹2.6 per kilometre. Battery as a service, therefore, suits low-to-medium usage patterns and fleet operators who can pass the charge to customers. Yet, total cost of ownership calculations become complex because rental attracts 18 per cent GST in most states, and the resale value of a vehicle without an owned battery stays uncertain. Exact comparative TCO studies for Indian conditions are not yet publicly available.
Challenges Facing Widespread Adoption
Despite aggressive promotion, battery as a service has not moved the needle significantly. Industry reports place its share below three per cent of EV registrations. Buyers cite ownership psychology and reluctance to pay two separate EMIs, one for the car and one for the battery. Resale remains a concern because the secondary market prefers vehicles with a clear battery title. Service network readiness also varies across brands and cities.
SUN Mobility’s swapping infrastructure works well for commercial three-wheelers but has not scaled to passenger cars. Without dense public charging stations, battery as a service stays tied to home or office charging. These structural gaps limit the model’s appeal beyond early adopters in metros.
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Verdict
Battery as a service has succeeded in bringing EV prices closer to comparable petrol models and therefore deserves credit for expanding showroom traffic. For urban drivers with moderate annual mileage and no plans to keep the vehicle beyond four years, the model reduces immediate capital outlay and transfers battery risk to the manufacturer. Yet for high-mileage users or those who value long-term ownership, the per-kilometre charge plus GST can make total ownership dearer than outright purchase.
The real test lies ahead. As more data on actual five-year costs emerge and resale markets mature, battery-as-a-service may evolve into a genuine enabler or remain a financing tool that shifts expense rather than lowers it. Indian buyers must therefore calculate personal usage patterns before choosing. Until then, battery as a service remains a useful but not universal solution for scaling electric mobility in India.
