Electric Trucks Cleared to Run to 20 Years: The Battery IDV and Own-Damage Problem Nobody Has Priced

The government has proposed extending the existing age limits of 12 years and 15 years for vehicles covered by the national permit system to 17 years and 20 years respectively for battery, hydrogen and natural gas commercial vehicles, as reported by Asia Insurance Post on 18 August 2026. The policy logic is straightforward: cleaner drivetrains earn a longer permitted life, which improves the total-cost-of-ownership case for fleet electrification.

The insurance consequence has received far less attention. Every element of Indian commercial motor own-damage pricing (the insured declared value schedule, the parts depreciation grid, the total-loss thresholds, the add-on eligibility rules) was calibrated for a diesel fleet whose national-permit vehicles left the road at 12 or 15 years. Insurers rarely had to price own-damage cover for a 16-year-old truck because a 16-year-old truck could not hold a national permit. The proposal removes that backstop for electric, hydrogen and CNG vehicles, and it does so for exactly the vehicle class whose dominant component, the traction battery, behaves least like the components the existing framework was built around.

For a fleet operator running electric trucks on commercial motor cover, the question is no longer whether the vehicle may legally operate in year 16. It is whether any insurer will offer own-damage terms worth having in year 16, and on what battery valuation basis. Operators who raise these questions at the next renewal get to shape the wording while insurers are still forming a view; everyone else inherits whatever default the market settles on.

The IDV of a commercial vehicle is the basis of own-damage cover: it caps the total-loss payout and anchors the premium calculation. The market-standard schedule, inherited from the erstwhile India Motor Tariff, depreciates the manufacturer's listed selling price on a fixed grid that ends at five years. Beyond five years, IDV is left to mutual agreement between insurer and insured, typically negotiated downward each renewal with reference to market resale value.

That structure has three properties that matter here:

1. It is age-based, not condition-based. A five-year-old vehicle with a pampered service history and one with 8 lakh hard kilometres depreciate identically on the grid.
2. It assumes a single depreciation curve for the whole vehicle. The grid does not distinguish between the cab, the chassis and the drivetrain. For a diesel truck this is a tolerable simplification because no single component dominates vehicle value.
3. It was never stress-tested past year 15, because the national permit regime removed the vehicles before the framework had to price them.

A traction battery breaks all three assumptions. Battery state of health is driven by charge cycles, depth of discharge, fast-charging share and thermal history, so two identically aged packs can sit at very different points on the degradation curve. The battery is a dominant share of vehicle value, so a whole-vehicle depreciation number is really a battery valuation decision in disguise. And a 17-to-20-year operating life implies at least one battery replacement mid-life, which resets the value of the single largest component while the IDV grid keeps marching down on age.

EV insurance guidance published by the Zurich Kotak knowledge centre in 2026 notes that the battery pack constitutes 40 to 60 percent of an electric car's total value, so a minor accident on a Rs 15 lakh EV can trigger a Rs 5 to 7 lakh claim if the battery casing is damaged. The same arithmetic applies with larger numbers to electric trucks and light commercial vehicles, where pack capacities and replacement costs are higher.

This concentration changes claim behaviour in three ways:

• Small collisions become large claims. An underbody strike that would cost a diesel truck a sump and a service now puts the battery enclosure in question. Once the casing is compromised, the repair conversation becomes a pack replacement conversation.
• The repair-versus-total-loss boundary moves. If the battery alone is half the vehicle's value, battery damage pushes many claims straight past the constructive total loss threshold even when the rest of the vehicle is intact. Salvage treatment is also unsettled, since a structurally sound truck with a dead pack has meaningful residual value that standard salvage practice does not capture well.
• Parts depreciation hits hardest where value concentrates. Claim-time depreciation on replaced parts is applied per the policy wording. Where the wording leaves battery depreciation to general parts language, the insurer's applied rate on the single most expensive item in the claim becomes the main determinant of the payout, and the operator discovers the rate at claim time rather than at placement.

Now extend this to year 10 or year 14 of a 20-year life. The pack has degraded, its replacement is still priced at current market rates, and the depreciation the insurer applies to it is anchored to vehicle age rather than pack age or pack health. A claim payout computed this way can fall a long way short of the cheque the operator must actually write to put the truck back to work.

None of this requires waiting for a regulatory fix. Own-damage terms for fleets are negotiated placements, and operators with meaningful premium volumes can put battery-specific language on the table now. Four items belong in the next renewal discussion, and the first two decide how the pack is valued.

Separate the battery in the schedule

Ask for the traction battery to be listed as a separately valued item with its own sum insured, its own depreciation basis and its own installation date. This is the single change that unlocks everything else: once the pack is a scheduled item, a mid-life replacement pack can be endorsed at replacement value instead of inheriting the vehicle's age-based depreciation.

Tie battery depreciation to pack age and health, not vehicle age

A battery management system records cycle count and state of health continuously. Negotiate a depreciation basis that references pack age from installation, with state-of-health certification (from the OEM or a qualified third party) as the evidence standard at claim time. Fleets already sharing telematics data with insurers have most of the required data flowing.

The other two items decide what the operator actually collects once the valuation basis is settled.

Fix the claim-time depreciation rate for the pack in writing

Whether or not the insurer agrees to a health-based valuation, get the applied depreciation percentage for battery replacement stated in the wording, by pack age band, rather than left to general parts language. A stated grid the operator considers imperfect still beats an unstated rate discovered during a Rs 20 lakh claim.

Revisit nil-depreciation and add-on eligibility cut-offs

Zero-depreciation and return-to-invoice add-ons in the Indian market carry vehicle-age eligibility caps set with diesel lifecycles in mind. If the permitted operating life moves to 17 and 20 years, operators should press for add-on eligibility keyed to the same extended life, or at minimum to battery installation date, so that a fleet in year 9 with a year-1 replacement pack is not treated as uninsurable for battery add-ons.

One more input belongs on the table: the battery warranty and any leasing or buy-back terms. Where the OEM warranty or a lessor's obligations already cover degradation below a stated capacity threshold, the insurance negotiation can concentrate on damage, fire and total loss, and the premium should reflect the narrower transfer.

Fire is where extended vehicle life and battery chemistry intersect most sharply. Thermal-runaway exposure is not static over a pack's life: it grows with cycle count, accumulated thermal stress and any historic mechanical insult to the enclosure. A framework that lets electric trucks run to 20 years is therefore also a framework that keeps high-cycle-count packs on the road, and parked in depots, for years longer than any Indian underwriter's loss experience currently covers.

The underwriting response to EV fire risk in adjacent segments is already visible. In electric bus placements, insurers have moved to depot accumulation sub-limits, pre-cover risk engineering and battery health certification requirements; the electric bus fleet risk profile covers that structure in detail, and the underwriting logic for stationary storage in the BESS underwriting note runs on the same physics. Truck fleet operators should expect the same instruments to appear in their own-damage and depot property terms as fleets age, and should negotiate the shape of those instruments rather than their existence.

Specific points to settle at placement:

• Fire cause language. Confirm the own-damage wording covers fire originating from the battery, including thermal runaway without external ignition, with no exclusion routed through wear-and-tear or electrical breakdown language. Fire from internal cell failure sits uncomfortably close to standard electrical-fault exclusions; resolve the ambiguity before the loss.
• Sub-limits that step down with pack age. If an insurer proposes fire sub-limits for older packs, ask for the step-downs to key off certified state of health rather than calendar age, and for a documented path to restore full limits on pack replacement.
• Depot accumulation. Trucks charging overnight in a shared yard replicate the bus depot accumulation problem. Clarify how the motor fleet policy and the depot property policy interact for a multi-vehicle fire, and which policy's sub-limit binds first.
• Warranty and recall interaction. Where a fire traces to a cell defect within a recall population, subrogation against the OEM is realistic. Wordings should preserve the insurer's recovery rights without letting the claim stall while liability is argued.

One exposure in the Zurich Kotak 2026 guidance deserves its own heading because it sits outside the policy schedule entirely: towing an EV with its wheels on the ground can push current back into the battery and cause thermal runaway. A drive-wheel tow turns the traction motor into an uncontrolled generator, and a damaged pack is the worst possible recipient of that back-fed current.

For a fleet operator this creates a recovery-phase risk chain with three weak links:

1. The roadside vendor. General towing contractors handle EVs correctly only if contracted and trained to. Flatbed recovery should be a written requirement in every recovery vendor agreement for electric vehicles, with drive-wheels-on-ground towing prohibited except with the driveline mechanically decoupled per OEM procedure.
2. The policy's towing and protection clauses. Motor policies routinely cover reasonable cost of protection and removal after an accident, and equally routinely expect the insured to prevent aggravation of the loss. A pack fire caused by improper towing after a minor collision invites a dispute over whether the fire loss flows from the insured accident or from post-accident mishandling. Get the wording to state that recovery-phase battery damage following an insured event is covered, and pair it with a documented correct-towing SOP so the insurer's aggravation argument never gets traction.
3. The storage window. A damaged pack can enter thermal runaway hours or days after the event. Recovery SOPs should specify quarantine parking away from other vehicles and structures, and the depot property insurer should know the quarantine protocol exists.

The permit extension lands in a market that is already rethinking what commercial motor cover means for electric fleets. Asia Insurance Post reported in 2026 that commercial fleet operators are increasingly discussing business interruption cover, charging-network dependency and fleet-level telematics integration with insurers as traditional motor cover is rethought for battery risk and specialised repair.

Each of those threads gains weight under a 17-to-20-year operating life:

• Business interruption. Specialised battery repair means longer vehicle-off-road periods than diesel fleets budget for, and the repair network for older-generation packs will thin as models cycle out of production. Downtime cover, hire-vehicle extensions and parts-delay provisions all deserve explicit treatment for the second half of the vehicle's life. The general structure of fleet placement is covered in the commercial motor fleet insurance guide.
• Charging dependency. A fleet's earning capacity depends on charging infrastructure the operator may not own. Where depot charging failure or a network outage idles revenue vehicles, conventional motor cover pays nothing. Operators negotiating BI extensions should map the charging dependency explicitly and decide which parts belong in motor, property or standalone covers.
• Telematics as the pricing bridge. Everything argued above about health-based battery valuation depends on data the fleet already generates. Operators who structure telematics sharing with insurers, on terms covered in the predictive fleet telematics post, hold the evidence base for condition-based IDV, health-keyed fire sub-limits and defensible claim outcomes. Operators who withhold the data will be priced on calendar age, which is exactly the basis that undervalues a well-managed fleet.

The proposal to let clean commercial vehicles run to 17 and 20 years is a genuine economic win for electric fleet operators. Capturing that win requires own-damage terms that stay meaningful across the extended life. The operators who open the battery valuation, fire sub-limit and recovery-handling conversations at their next renewal will get wordings shaped around their fleets. The rest will get the market default, drafted for a diesel truck that was supposed to retire in year 15.