What is inside the Mahindra Treo Auto battery pack
The Mahindra Treo Auto carries a 7.37 kWh pack built from LMO / LMO-NMC Pouch cells arranged in 4 serviceable modules at a nominal 48 V. Pack mass lands near 60 kg including the enclosure, cooling plate, contactors and BMS harness.
Because the cells are LMO Pouch, the recoverable value profile is dominated by nickel and cobalt, with lithium and copper adding a meaningful second tranche. That decides whether a retired pack is worth repurposing, refining, or both.
| Parameter | Value |
|---|---|
| Chemistry | LMO / LMO-NMC Pouch |
| Cell format | Laminated pouch |
| Energy / voltage | 7.37 kWh · 48 V |
| Modules | 4 |
| Estimated pack mass | 60 kg |
| On sale since | 2019 (India) |
Step 1 — Removing and shipping a three-wheeler pack
Packs are removed from the under-seat or rear bay; high-cycle fleet packs are checked for water ingress first. Retired packs are UN 3480 or UN 3481 dangerous goods, so the pack must be below 30% state of charge and any deformation, swelling or thermal history declared before pickup.
Packs are palletised in small groups inside UN-rated boxes, with dividers between units. Fleet depots and dealer service points are scheduled as recurring milk runs rather than one-off pickups.
- Check for corrosion and water ingress in the pack bay
- Flag any aftermarket or repaired packs on the manifest
- Tape terminals and remove quick-connect plugs
- Group packs by chemistry before collection
Step 2 — Module-level state of health grading
Each of the 4 modules is tested independently — a whole-pack SOH figure hides the spread that decides second-life eligibility. We run a full capacity cycle, DC internal resistance measurement and impedance spectroscopy.
Our degradation model for the Mahindra Treo Auto shows how value falls with age. Measured results replace these estimates once the pack is on the bench.
| Service year | Modelled SOH | Grade | Residual value |
|---|---|---|---|
| Year 2 | 94.3% | A — BESS ready | USD 264 |
| Year 4 | 90% | A — BESS ready | USD 254 |
| Year 6 | 85.7% | A — BESS ready | USD 241 |
| Year 8 | 81.4% | B — Second life | USD 221 |
| Year 10 | 77.1% | B — Second life | USD 205 |
Step 3 — What you actually recover
For modules routed to refining, a pack of this size and chemistry typically yields about 1.0 kg lithium, 2.1 kg nickel, 0.3 kg cobalt and 3.9 kg copper.
At 80% SOH our model sends about 47% of the pack to second life, worth USD 114, and credits USD 101 for the remainder as black mass. Avoided emissions come to roughly 334 kg CO2.
Field note
Step 4 — Where to send it and what paperwork you get
Mahindra Treo Auto packs are received directly at 8 intake sites in its markets, including Chakan, Maharashtra, Sanand, Gujarat, Taloja, Maharashtra, Narela, Delhi. From there, modules move to the nearest grading bench and refinery.
Every consignment closes with a certificate showing quantity processed, recovery percentages achieved and downstream vendor disclosure, in the form needed for CPCB EPR filings under the Battery Waste Management Rules 2022. Fleets retiring several Mahindra Treo Auto units should book one consolidated pickup to cut per-pack cost.