Green Tiger Converts Petrol Scooters Into EVs With an RTO-Approved Retrofit Kit: Everything You Need to Know
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There’s a scooter parked outside almost every home in India — paid for, familiar, and still running fine. Multiply that by roughly 250 to 300 million petrol two-wheelers on Indian roads, and you get a problem no new-EV showroom can solve: most owners aren’t looking to replace a working vehicle, they’re looking to stop paying for petrol.
That’s the gap Bengaluru-based Green Tiger Mobility is building for. Rather than competing for buyers ready to spend on a brand-new electric scooter, the company retrofits the one already in the garage, using a kit that has cleared RTO and ARAI approval processes. For any scooter owner wondering whether their next vehicle purchase is really necessary, that’s the detail worth knowing.
Officially Confirmed by Green Tiger: What the Company Has Announced
✓ RTO-approved retrofit solution, with the associated registration paperwork handled by the company
✓ ARAI-approved conversion technology, including a Battery Management System developed with ARAI and Ministry of Heavy Industries support
✓ Conversion typically completed in 2–3 days
✓ Three retrofit packages: bi-mode hybrid, full electric, and swappable battery
✓ Home charging support via a standard 5-amp socket (Fusion and Flex)
✓ Battery-swapping support built with Indofast Energy and Battery Smart
✓ Smart connectivity through Green Tiger’s Vehicle Intelligence Unit (VIU) and Smart EV Display
✓ Compatibility with select gearless models from Honda, Hero, Suzuki, TVS, and Yamaha
What Is Green Tiger and How Does Its EV Retrofit Technology Work?
Green Tiger Mobility Private Limited was formally incorporated on October 27, 2020, with founder Ashish Dokania and his wife, Swati Keshan Dokania, as founding directors, and the company is headquartered in Bengaluru. Dokania’s background is in banking and infrastructure financing rather than automotive engineering — he previously ran Shapoorji Pallonji’s rooftop solar business and founded a UK grid specialist, Transtel Utilities — before turning to the idea of rescuing existing petrol vehicles instead of building new ones.
The company runs its retrofit operations from a centre in Bommanahalli, Bengaluru, and frames its mission around extending the life of India’s existing two-wheeler fleet through electric retrofitting rather than replacement, aligning this with UN Sustainable Development Goals around clean energy, decent work, responsible consumption, and climate action.
What Is an RTO-Approved EV Retrofit Kit and Why Does It Matter?
An RTO-approved retrofit kit is a certified set of electric components — motor, battery, controller, and supporting electronics — that a government-recognised authority has cleared for legal installation on an existing vehicle. Approval matters because a retrofit isn’t just a mechanical swap; it changes a vehicle’s registration category, so both the kit and the fitment process need regulatory sign-off before the scooter can go back on the road.
Green Tiger’s conversion solution is ARAI-approved — ARAI (the Automotive Research Association of India) being the same body that certifies vehicles for mainstream two-wheeler manufacturers. Its Battery Management System has been developed with support from ARAI and the Ministry of Heavy Industries, and is EMI/EMC approved under AIS 004. That certification chain covers electrical and thermal safety, legal re-registration as an electric or hybrid vehicle, and consistency across converted vehicles, rather than each retrofit being a one-off custom job.
How Does Green Tiger Convert a Petrol Scooter Into an Electric Scooter?
Based on information Green Tiger has published, the retrofit follows a consistent workflow:
Step 1 — Vehicle Inspection Every scooter goes through a 130-parameter diagnostic check at the Bommanahalli retrofit centre.
↓ Step 2 — Conversion Path Selection Based on that diagnostic, the team recommends one of three transformations: bi-mode hybrid, full electric, or swappable battery.
↓ Step 3 — Electric Motor Installation The petrol powertrain is replaced or supplemented with Green Tiger’s electric motor.
↓ Step 4 — Battery Installation A lithium battery pack is fitted, paired with Green Tiger’s proprietary Battery Management System.
↓ Step 5 — Controller Calibration The in-house motor controller is installed and calibrated to the vehicle.
↓ Step 6 — Testing & Certification The converted vehicle is tested, and Green Tiger’s team handles the RTO documentation needed for legal re-registration.
↓ Step 7 — Delivery The company’s published FAQ states the full process typically takes 2–3 days from start to handover.
Green Tiger EV Retrofit Kit: Key Specifications, Features and Pricing
| Feature | Official Information | Officially Confirmed |
| Models available | Swap, Fusion, Flex | Yes |
| Top speed (all models) | 61 km/hr | Yes |
| Range — Swap | 75 km | Yes |
| Range — Fusion | 65 km (varies with gradient, load, tyre pressure, riding style) | Yes |
| Range — Flex | 75 km (varies with gradient, load, tyre pressure, riding style) | Yes |
| 0–40 km/h acceleration | 4.6 sec (Swap, Flex); 5.7 sec (Fusion) | Yes |
| Full charge time | Swap: instant (battery swap); Fusion & Flex: 3 hrs 30 min | Yes |
| Starting price | Swap ₹31,000; Flex ₹52,000; Fusion ₹54,000 (excludes GST, RTO, insurance, and repair work) | Yes |
| Battery Management System | ARAI-approved, supports NMC/LFP/LMFP cells up to 32S/200A, AIS 004 EMI/EMC approved | Yes |
| Telematics (VIU) | 2G/4G/5G connectivity, GPS, FOTA updates, geo-fencing, accident and theft alerts | Yes |
| Conversion time | 2–3 days | Yes |
| Compatible brands | Honda, Hero, Suzuki, TVS, Yamaha (select gearless models) | Yes |
| Exact certification/homologation document numbers | Green Tiger has not officially disclosed this information at the time of writing. | No |
Green Tiger at a Glance: Range, Price, Charging and Compatibility
| Attribute | Details |
| Retrofit Type | Bi-mode hybrid, full electric, or swappable battery |
| Installation Time | 2–3 days |
| Charging | 5-amp home socket (Fusion, Flex); instant swap (Swap) |
| Battery Options | NMC, LFP, LMFP cell chemistries |
| Top Speed | 61 km/hr |
| Range | 65–75 km, model-dependent |
| Battery Swapping | Yes, via Indofast Energy and Battery Smart |
| Smart Features | VIU telematics, Smart EV Display, fleet dashboard |
| Certification | ARAI-approved, RTO-compliant |
| Compatible Vehicles | Select Honda, Hero, Suzuki, TVS, Yamaha gearless scooters |
How Green Tiger’s Electric Retrofit System Works: Battery, Motor and Controller Explained
At its core, a Green Tiger retrofit replaces the fuel-and-combustion chain with an electric drivetrain. The battery pack stores energy and feeds it through the Battery Management System, which tracks cell voltage and temperature and runs continuous battery diagnostics to prevent unsafe charge or discharge conditions. From there, power electronics in the motor controller convert stored DC energy into the current needed by the traction motor, turning throttle input into torque at the rear wheel.
The Smart EV Display sits between rider and system, showing State of Charge (SOC), fault alerts, and park status through CAN-bus communication with the rest of the vehicle. Charging on the Fusion and Flex models happens through a standard 5-amp domestic socket, while the Swap model skips the wait entirely by exchanging a depleted battery for a charged one.
Green Tiger Retrofit vs Buying a New Electric Scooter: Which Makes More Sense?
| Factor | Retrofit (Green Tiger) | Buying a New Electric Scooter |
| Initial cost | Starts around ₹31,000–₹54,000 (excl. GST, RTO, insurance) | Typically higher upfront, often ₹80,000–₹1.5 lakh+ |
| Running cost | Lower than petrol; comparable to other EVs | Lower than petrol; comparable to retrofits |
| Vehicle reuse | Retains original chassis and body | Requires a new vehicle purchase |
| Environmental impact | Extends life of an existing vehicle, reducing new manufacturing | New manufacturing involved |
| Ownership experience | Familiar scooter, new powertrain | Entirely new vehicle and warranty terms |
| Maintenance | Green Tiger has not officially disclosed detailed maintenance cost comparisons at the time of writing. | Varies by OEM |
Why Green Tiger’s EV Retrofit Technology Matters for India’s Petrol Scooter Owners
With an estimated 250 to 300 million petrol two-wheelers already on Indian roads — vehicles their owners have little intention of replacing — the retrofit model targets a segment that new-EV sales alone can’t reach. Green Tiger’s own sustainability messaging states that retrofitting its existing base of petrol two-wheelers can happen at under half the cost of a new electric vehicle, extending a vehicle’s usable life by five to seven years, saving around 600 kWh of energy, and preventing roughly 15 kg of landfill waste per unit — part of the circular-economy case the company makes for cutting up to 1.5 tonnes of CO2 per vehicle annually. These are Green Tiger’s own published estimates rather than independently audited figures.
Who Should Choose a Green Tiger EV Retrofit Kit?
- Students and daily commuters: Lower running costs on a scooter they already know how to ride.
- Families: No need to replace a working vehicle to cut fuel spending.
- Office commuters: Reduced exposure to fluctuating petrol prices.
- Fleet operators and small businesses: A path to electrify an existing fleet without buying new vehicles outright.
- Delivery riders: The swappable-battery option, built with Indofast Energy — a joint venture between Indian Oil and Sun Mobility — and Battery Smart, targets riders covering 100–150 km a day who can’t afford charging downtime.
Green Tiger: Officially Confirmed Information vs What’s Still Awaiting Confirmation
| Officially Confirmed | Not Yet Confirmed |
| Green Tiger holds six approved patents covering its retrofit and power electronics technology | Nationwide rollout timeline beyond Bengaluru |
| Its retrofit solution is ARAI-approved | Full pricing across all city-specific RTO/GST variations |
| The company has completed roughly 600 retrofits since scaling up full operations in August 2024 | Long-term battery degradation data beyond current on-road figures |
| Green Tiger has raised about $1.95 million in equity across five rounds, with government-linked grants taking the total to roughly ₹21 crore, and counts Bajaj Motors among its investors, with Vikas Bajaj on its board | Exact insurance premium impact of conversion |
| At the 2024 Bharat Mobility Expo, Prime Minister Narendra Modi stopped at Green Tiger’s booth to learn about its i-Hybrid retrofit technology | Resale value trends for retrofitted scooters |
Expert Engineering Analysis: Is Green Tiger’s EV Retrofit Technology Technically Sound?
Retrofitting a scooter built around an internal combustion engine is harder than it looks. The motor, controller, and battery pack must fit within a chassis never engineered for them, which is why Green Tiger builds its own battery packaging, motor controllers, and telematics hardware rather than sourcing off-the-shelf parts — components the company says now also power roughly ten other EV manufacturers.
Motor controller calibration is central to how the retrofit actually rides: the controller has to be tuned to the specific motor and vehicle weight so that throttle input maps predictably to torque, rather than feeling abrupt or sluggish. That torque mapping, together with CAN-based communication between the controller, BMS, and Smart EV Display, is what lets the system report SOC and fault conditions in real time rather than as a delayed estimate.
Weight distribution is a genuine constraint: battery placement has to preserve the scooter’s original centre of gravity and handling rather than degrading them, and structural integrity depends on how well the battery enclosure and mounting points integrate into the existing frame — part of what RTO and ARAI approval processes are meant to validate. Electrical safety hinges on the BMS’s ability to manage voltage and temperature across charge cycles; Green Tiger’s BMS is rated for NMC, LFP, and LMFP chemistries up to 32S/200A, giving it flexibility across battery suppliers.
Thermal management matters more here than in a purpose-built EV, since components are packaged into a shell not originally designed to dissipate that heat. On long-term reliability, Green Tiger points to more than 1.5 lakh cumulative kilometres logged by its retrofitted vehicles as an early real-world durability signal, though independently audited long-term data is not yet available.
Should You Convert Your Petrol Scooter With Green Tiger?
Ideal For
✓ Existing scooter owners who want to avoid buying a new vehicle
✓ Daily commuters looking to cut petrol costs
✓ Students on a fixed budget
✓ Fleet operators electrifying multiple vehicles
✓ Delivery riders needing minimal charging downtime
✓ Budget-conscious buyers comparing retrofit cost against a new EV
Consider Other Options If
- Your existing scooter isn’t among Green Tiger’s supported models
- You’d prefer a factory-built electric scooter with a full manufacturer warranty
- You need features — such as a longer single-charge range — that aren’t currently available through retrofit
Green Tiger EV Retrofit Kit: Pros and Cons
| Pros | Cons |
| Keeps the original vehicle instead of scrapping it | Charging time (3.5 hrs) longer than a petrol refuel, except on the Swap model |
| RTO- and ARAI-approved for legal registration | Range (65–75 km) may not suit very long daily commutes |
| Lower running costs than petrol | Upfront retrofit cost is separate from GST, RTO, and insurance charges |
| Swappable-battery option removes charging downtime for high-mileage riders | Limited to specific gearless scooter models from Honda, Hero, Suzuki, TVS, and Yamaha |
| In-house BMS and telematics built for Indian conditions | Long-term resale and degradation data not yet independently published |
Green Tiger EV Retrofit: 5 Key Takeaways
- Green Tiger retrofits existing petrol scooters into hybrid or fully electric vehicles using an RTO-approved, ARAI-certified kit.
- The process typically takes 2–3 days and starts with a 130-parameter diagnostic.
- Three retrofit paths exist: bi-mode hybrid, full electric, and swappable battery for high-mileage riders.
- The company has completed roughly 600 retrofits since scaling in August 2024 and has attracted investment from Bajaj Motors.
- Retrofitting addresses India’s large existing base of petrol two-wheelers rather than competing purely on new-EV sales.
Final Verdict: Is Green Tiger’s Petrol-to-Electric Retrofit Worth It?
Green Tiger’s proposition doesn’t try to out-market new-EV makers — it sidesteps the comparison by working on the vehicle already sitting in the garage. RTO and ARAI approvals give the conversion legal and technical credibility, and the in-house BMS, telematics, and motor-controller hardware suggest a company solving engineering problems rather than assembling off-the-shelf parts. Whether retrofitting suits a given rider still depends on daily range needs, access to a Green Tiger centre, and total cost once GST, RTO, and insurance are added — details worth confirming directly with the company before committing.
Frequently Asked Questions About the Green Tiger EV Retrofit Kit
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Is it legal to convert a petrol scooter to electric in India?
Yes — but only if the retrofit kit and the installer carry official approval. Green Tiger’s retrofit kit is RTO-approved and ARAI-certified, and Green Tiger’s own team handles the RTO paperwork needed to legally re-register a converted scooter as electric or hybrid, so owners don’t have to navigate that process themselves.
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What exactly does Green Tiger’s RTO-approved retrofit kit include?
The kit covers everything needed to electrify an existing petrol scooter: an electric motor, a lithium battery pack, an in-house motor controller, and Green Tiger’s proprietary Battery Management System (BMS), which is EMI/EMC approved under AIS 004. Because the full kit has cleared regulatory review, the resulting vehicle can be re-registered as electric or hybrid rather than petrol-powered.
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Which scooter models can Green Tiger convert to electric?
Green Tiger’s website lists select gearless models from five manufacturers as compatible: Honda (Activa, Dio, Aviator, Cliq), Hero (Maestro, Pleasure), Suzuki (Access, Swish), TVS (Jupiter, Wego), and Yamaha (Fascino). Owners of other scooter models or brands should check directly with Green Tiger, since compatibility outside this list has not been officially confirmed.
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Is a Green Tiger retrofit cheaper than buying a new electric scooter?
Generally, yes, on upfront cost. Green Tiger’s published starting prices range from ₹31,000 to ₹54,000 across its Swap, Flex, and Fusion kits (excluding GST, RTO, and insurance), while most new electric scooters start closer to ₹80,000. Once converted, running costs are broadly similar to a factory-built EV, since both draw power from the grid instead of petrol.
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Does converting a petrol scooter to electric change its chassis or body?
No — Green Tiger’s retrofit keeps the scooter’s original chassis and body intact and replaces only the petrol powertrain with electric components (motor, battery, and controller). Green Tiger has not officially disclosed further details on any structural modifications made during fitment.
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How long does a Green Tiger scooter conversion take from start to finish?
According to Green Tiger’s published FAQ, a full conversion — including the initial diagnostic, component installation, testing, and RTO documentation — typically takes 2 to 3 days at its Bommanahalli retrofit centre in Bengaluru.
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Can a scooter converted by Green Tiger still be legally registered and driven?
Yes. Because Green Tiger’s kit is RTO-approved, the company’s team handles the documentation required to re-register the vehicle in its new electric or hybrid category as part of the retrofit service, rather than leaving that step to the owner.
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Does converting a petrol scooter to electric affect its insurance?
Green Tiger has not officially disclosed how conversion affects insurance premiums or coverage terms. Since a retrofit changes a vehicle’s registered fuel type, owners should confirm updated terms with their insurer after the conversion is complete.
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How do Green Tiger’s electric scooter conversions get charged?
It depends on the kit. The Fusion and Flex conversions charge through a standard 5-amp home socket and take about 3 hours 30 minutes for a full charge. The Swap conversion instead uses battery swapping, so charging time is effectively eliminated — a depleted battery is exchanged for a charged one.
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Who is Green Tiger’s retrofit service actually designed for?
Green Tiger positions its retrofit kits for riders who want to keep the scooter they already own while cutting fuel costs: daily commuters, students, families, small businesses, and fleet operators. Its swappable-battery option is specifically aimed at delivery riders covering 100–150 km a day who can’t afford to wait around for a charge.
