BMW i4 eDrive40 battery recycling in Changsari, Assam
Guwahati — Changsari North-East Yard takes whole BMW i4 eDrive40 packs straight from fleets, dealers and workshops. Packs are weighed, de-energised and logged here before modules move on for grading or refining.
Pack value at 80% SOH
3,932 USD
Hybrid Split
Second-life share
47%
At 80% SOH
Site capacity
5,000 TPA
Reverse Logistics Yard
Cities served
0
From Changsari, Assam
Where a BMW i4 eDrive40 pack goes from Changsari, Assam
- 1
Intake at Changsari, Assam
One pack per UN-rated pallet box, strapped and restrained, with terminals capped and coolant ports sealed. Each pack is weighed, photographed and discharged below 30% state of charge.
- 2
Graded at Gurugram, Haryana
Modules travel 1,463 km to NCR — Gurugram Collection & Grading Hub for capacity, resistance and impedance testing across all 8 modules.
- 3
Second life at Butibori, Maharashtra
At 80% SOH about 47% of the pack qualifies for reuse and goes to Nagpur — Butibori Second-Life Works (1,425 km). Good — grade-A modules above 80% SOH qualify for commercial-scale BESS strings.
- 4
Refined at Haldia, West Bengal
Remaining modules are shredded to black mass and refined at Kolkata — Haldia Refining Works, 592 km away.
| Stage | Facility | Distance |
|---|---|---|
| Nearest grading bench | NCR — Gurugram Collection & Grading Hub | 1,463 km |
| Nearest second-life works | Nagpur — Butibori Second-Life Works | 1,425 km |
| Nearest refinery | Kolkata — Haldia Refining Works | 592 km |
Inside the BMW i4 eDrive40 battery
The BMW i4 eDrive40 (2022) carries a 83.9 kWh NMC 811 Cylindrical 2170 pack with 8 modules at 398 V, weighing roughly 470 kg. High-nickel cylindrical cells with the strongest hydrometallurgical recovery credit per tonne of black mass.
| Service year | SOH | Grade | Value |
|---|---|---|---|
| Year 2 | 94.5% | A — BESS ready | USD 5,244 |
| Year 4 | 90.2% | A — BESS ready | USD 5,035 |
| Year 6 | 85.9% | A — BESS ready | USD 4,754 |
| Year 8 | 81.6% | B — Second life | USD 4,135 |
| Year 10 | 77.3% | B — Second life | USD 3,625 |
What the chemistry means here
How it ages
NMC 811 loses capacity through a mix of SEI growth, cathode surface reconstruction and micro-cracking of nickel-rich particles. Resistance climbs faster than in LFP, which matters as much as capacity for second-life duty.
Thermal behaviour
High-nickel NMC cathodes release oxygen as they decompose, so once runaway starts it is fast and energetic. Cylindrical 2170 cells vent through a designed rupture point, which helps, but cell-to-cell propagation inside a tightly packed module is the main hazard.
Handling NMC 811 (2170)
Collecting a BMW i4 eDrive40 pack
83.9 kWh, 8 modules, about 470 kg — this is how the Changsari, Assam team plans the job.
Removal
Packs are dropped on a vehicle lift using the OEM procedure and a rated battery table, then isolated at the service disconnect.
Packaging
One pack per UN-rated pallet box, strapped and restrained, with terminals capped and coolant ports sealed.
Consolidation
Dealer and workshop returns are consolidated into full truckloads, typically eight or more packs per run.
Before the truck arrives
- Pull the service disconnect and record pack voltage
- Drain or cap coolant lines before lifting
- Photograph the pack casing and any impact damage
- Keep the VIN and pack serial together on the manifest
Changsari, Assam site notes
- Onward transit takes longer than elsewhere because of distance and terrain.
- Batteries are held in monitored storage until a full load is assembled.
- Keep batteries protected from rain and humidity before collection.
- Declare any damage in advance so isolated storage is available.
What this pack yields
lithium
4.77 kg
nickel
30.82 kg
cobalt
3.82 kg
manganese
3.55 kg
copper
15.28 kg
aluminium
12.82 kg
Refining-route estimate at 80% SOH. Measured module health on the bench sets the final split.
Rules in India
Battery Waste Management Rules 2022 (BWMR)
Regulator: Central Pollution Control Board (CPCB) and State Pollution Control Boards
The yard operates under Assam's state environmental consent regime and supports the Battery Waste Management Rules 2022 by keeping custody records for every unit collected in the north-east.
BMW i4 eDrive40 in Changsari, Assam: common questions
Can I drop off a BMW i4 eDrive40 battery at Changsari, Assam?
Yes, by appointment. Guwahati — Changsari North-East Yard accepts whole BMW i4 eDrive40 packs; book a collection or a drop-off slot so the site can prepare packaging and paperwork.
What happens to BMW i4 eDrive40 modules after Changsari, Assam?
Intake at Changsari, Assam, then Graded at Gurugram, Haryana, then Second life at Butibori, Maharashtra, then Refined at Haldia, West Bengal. At 80% SOH roughly 47% of the pack goes to second life and the rest is refined.
How should a BMW i4 eDrive40 pack be prepared for pickup?
Pull the service disconnect and record pack voltage. Drain or cap coolant lines before lifting. Photograph the pack casing and any impact damage. Keep the VIN and pack serial together on the manifest.
Which rules apply to BMW i4 eDrive40 recycling in India?
Battery Waste Management Rules 2022 (BWMR), overseen by Central Pollution Control Board (CPCB) and State Pollution Control Boards. Retired packs move as hazardous goods by road under central motor vehicle rules, and export needs Basel-compliant permissions.
BMW i4 eDrive40 at other sites
Retiring BMW i4 eDrive40 packs near Changsari, Assam?
Share pack counts and condition. The despatch desk confirms a collection window within one working day and sends the right packaging.