India's electric vehicle market is growing fast — and the battery warranty claims are growing with it. For OEMs who manufacture or supply EV batteries, the question of how batteries degrade in real-world Indian conditions is no longer theoretical. It is showing up on service desks, in warranty disputes, and in insurance premium negotiations.
The fundamental challenge: battery cells behave very differently in a lab versus on Indian roads. Ambient temperatures in Rajasthan summers push thermal management to its limits. Frequent short-cycle trips in urban delivery fleets cause stress patterns that standard testing does not replicate. Charging habits — fast charging at depots, trickle charging overnight, opportunity charging at mid-day — leave distinct electrochemical signatures.
The gap between warranty policy and real-world performance
Most EV OEMs in India today offer battery warranties on capacity retention thresholds — typically 70–80% capacity after a specified number of cycles or years. The problem is that warranty claims are evaluated using point-in-time diagnostics, not continuous health monitoring. A battery that has been consistently abused shows up as degraded at the warranty check; there is no history of how it got there.
This creates a one-sided information problem. The fleet operator has no visibility into battery health between service intervals. The OEM has no data to distinguish warranty-valid degradation from abuse-driven degradation. Claims get settled conservatively — often in the fleet operator's favour — and OEMs absorb costs that are not structurally theirs to bear.
What continuous telemetry changes
- Degradation curve benchmarking: With real-time SoH (State of Health) data across thousands of batteries, OEMs can build India-specific degradation models. Which chemistries hold up best in high-heat zones? Which charging patterns accelerate capacity loss?
- Warranty claim validation: Continuous health logs mean OEM service teams can trace exactly how a battery reached its current state. Abuse-driven degradation is distinguishable from manufacturing defects.
- Predictive replacement: Batteries approaching end-of-life can be flagged 2–3 months before failure, enabling proactive swaps before they cause fleet downtime.
- Insurance pricing data: Insurers pricing EV battery risk currently use assumptions. OEMs with real degradation data can negotiate better terms — and share that data as a product differentiator.
The data infrastructure gap
The barrier for most Indian EV OEMs is not willingness — it is data infrastructure. Fitting telemetry hardware that reliably captures battery metrics at scale, in vehicles operating across India's connectivity patchwork, and integrating that data into actionable dashboards, requires more than just plugging in a sensor.
Ajjas has built this infrastructure specifically for Indian operating conditions — IP67-rated hardware, multi-network SIM fallback, edge-computed critical alerts, and a cloud platform that ingests battery telemetry alongside vehicle telematics. For battery OEMs, the question is not whether to invest in telemetry. It is how quickly they can close the data gap before the competitive pressure from better-instrumented rivals makes it unavoidable.
OEMs with real-time battery health data will win on warranty costs, fleet operator trust, and insurance partnerships. Those without it will be operating blind in a market that is about to demand transparency.