The first wave of electric cars bought in Delhi NCR is now coming up for resale, and many more will follow. Electric passenger vehicle retail sales grew 84% in FY26 to 1.99 lakh units, so the supply of used EVs is only going to rise. The catch is the battery. It is the most expensive part of the car, and India still has no universally accepted standard to measure or certify its health at resale. If you are looking at used electric cars in Delhi NCR, this guide shows you how to check the battery yourself.
Why the Battery Decides the Price
The battery pack makes up roughly 40 to 50 per cent of an EV's cost, according to Counterpoint Research. A petrol car with a tired engine loses some value. An EV with a weak battery can lose much more, because a replacement can cost a large share of what the car is worth.
Prices are moving too. As lithium-ion battery costs fall and newer EVs offer more range for similar money, first-generation EVs are losing value faster. That works in your favour as a buyer, as long as you know what you are getting. Cars24 has said battery concerns are the single biggest barrier to buying a used EV, which is why a seller who can show clear battery data deserves a better price than one who cannot.
What "Battery Health" Means
Battery health, often called State of Health or SoH, compares the battery's usable capacity today with its capacity when new. A battery at 90% SoH holds roughly 90% of the energy it did on day one, so expect roughly 90% of the original range in similar conditions.
Every lithium-ion battery loses some capacity over time. How fast depends on age, kilometres, heat and charging habits. Frequent DC fast charging, regular charging to 100% and long hours parked in strong heat all add wear. In a city where summer temperatures can cross 45°C, how and where a car was parked matters more than most buyers think.
Step 1: Get a Battery Report From the Brand
With no official resale certificate yet, the most reliable data comes from the manufacturer. Ask the seller to book a battery health check or diagnostic scan at an authorised service centre and share the report. It should show the battery's health or capacity, any fault codes and the software version.
If the seller refuses, treat that as a warning sign. Some EVs also show battery and charging data in the brand's connected app, and you can ask the seller to show it to you, but app screens are not a substitute for a service-centre report.
Step 2: Check the Battery Warranty and Whether It Transfers
Battery warranties are where many used EV buyers get caught out, because some "lifetime" warranties apply only to the first owner. Tata Motors, for example, offers a lifetime battery warranty on the Nexon.ev 45 kWh, Curvv.ev and Harrier.ev, defined as 15 years with unlimited kilometres, but only for the first owner, and it ends when the car is sold. Second owners get 8 years or 1.6 lakh km on the Nexon.ev 45 kWh and Curvv.ev, and 10 years or 2 lakh km on the Harrier.ev, and must register the ownership change at a Tata dealership for it to apply. If you are considering one of these, browse used Tata cars in Delhi NCR and check the exact terms for the car in front of you.
Whatever the brand, ask three questions: how many years and kilometres of battery warranty are left, whether it transfers to you, and what you must do to activate it. Get the answers from the manufacturer, not just the seller. Our ownership transfer guide for Delhi NCR covers the RTO side. The warranty transfer is a separate step with the brand.
Step 3: Read the Charging and Service History
Ask how the car was charged. A car charged mostly at home on AC overnight has usually had an easier life than one that relied on DC fast chargers every day. Check the RC as well: a car registered for commercial use, such as a taxi, will usually have covered more kilometres and more fast charging.
Then look at the service record. EVs need less routine maintenance than petrol cars, but they still have scheduled checks, software updates and occasional recall campaigns. Our guide to reading a used car's service history applies here too. Look specifically for any battery or charging-related work.
Step 4: Test the Range Yourself
Ask for the car to be fully charged before your visit and note the estimated range on the display. Compare it with what owners of the same model typically get in city driving, not the brochure figure. Then drive for at least 20 to 30 minutes, including stop-start traffic and a stretch at higher speed, and watch how quickly the percentage drops.
Check the charging port and cable, confirm the portable charger is included, and try a short charging session if you can. Make sure no battery or high-voltage warning lights come on at any point.
Step 5: Look for Physical Damage and Water Exposure
The battery pack sits under the floor, so it takes the hits from speed breakers, potholes and waterlogged roads. Look underneath for dents, scrapes or signs of impact on the pack casing, and ask directly whether the car has been through flooding. Our guide to spotting a flood-damaged used car lists the signs to look for inside the cabin as well.
Insurance and Running Costs
Budget for insurance before you agree a price. A used EV typically costs more to insure than a comparable petrol car, mainly because of higher own-damage premiums, according to PolicyBazaar. Standard comprehensive policies also do not cover battery degradation, so the battery warranty is your main protection against a weak pack. If you plan to finance the car, our used car loan guide explains how to compare offers.
Help Is Coming, Slowly
Policymakers are working on the gap. NITI Aayog has recommended a battery passport that would record a battery's health over its life, and the road transport ministry has formed a committee to implement a Battery Aadhaar system to track batteries. Counterpoint Research does not expect this to be meaningfully in place before 2030, so for now the checks in this guide are what protect you.
A Used EV Battery Checklist
Get a battery health report from an authorised service centre. Confirm the remaining battery warranty and whether it transfers to you. Ask how the car was charged and whether it was used commercially. Test the range from a full charge on a real drive. Check the underside of the pack for damage and ask about flooding. Price in insurance and any gap in warranty cover.
If you are new to electric cars, start with our guide to buying an EV in Delhi. When you have a shortlist, compare verified used cars in Delhi NCR and ask each seller for the battery report before you visit.
Get the Hooter app for daily updates: Download the Hooter app to browse verified listings, track price changes and shortlist cars before you visit.
Frequently Asked Questions
Is there an official battery health certificate for used EVs in India?
Not yet. There is no universally accepted standard for certifying battery health at resale. A diagnostic report from an authorised service centre is the most reliable proof available today.
What battery health should a used EV have?
It should make sense for the car's age and kilometres. Read the battery report alongside the remaining warranty and the range you see on a full charge, rather than relying on one number.
Does the battery warranty transfer to the second owner?
It depends on the brand and model. Some lifetime warranties end when the car is sold, and second owners get a shorter term. Confirm the terms with the manufacturer and register the transfer.
Does car insurance cover battery degradation?
Standard comprehensive policies do not cover battery degradation or a fall in battery health. The battery warranty is your main protection.
Is a used EV cheaper to run than a used petrol car?
Usually, if you can charge at home, because electricity costs less per kilometre than petrol. Insurance can cost more, so add both to your budget.