BYD Seal Performance battery recycling in Changsari, Assam
Guwahati — Changsari North-East Yard takes whole BYD Seal Performance 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
2,642 USD
Hybrid Split
Second-life share
56%
At 80% SOH
Site capacity
5,000 TPA
Reverse Logistics Yard
Cities served
0
From Changsari, Assam
Where a BYD Seal Performance 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 1 modules.
- 3
Second life at Butibori, Maharashtra
At 80% SOH about 56% of the pack qualifies for reuse and goes to Nagpur — Butibori Second-Life Works (1,425 km). Excellent — long calendar life makes LFP the preferred feedstock for stationary BESS repurposing.
- 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 BYD Seal Performance battery
The BYD Seal Performance (2023) carries a 82.5 kWh LFP Prismatic (LiFePO4) pack with 1 modules at 400 V, weighing roughly 611 kg. Cobalt-free prismatic chemistry dominant in Indian passenger EVs and commercial fleets. Low black mass value, exceptional second-life economics.
| Service year | SOH | Grade | Value |
|---|---|---|---|
| Year 2 | 95.8% | A — BESS ready | USD 4,310 |
| Year 4 | 92.7% | A — BESS ready | USD 4,174 |
| Year 6 | 89.6% | A — BESS ready | USD 4,037 |
| Year 8 | 86.5% | A — BESS ready | USD 3,891 |
| Year 10 | 83.4% | B — Second life | USD 3,267 |
What the chemistry means here
How it ages
LFP fades slowly and fairly linearly for most of its life. Capacity loss is driven mainly by lithium inventory being locked up in the SEI layer on the graphite anode, while the cathode structure stays largely intact.
Thermal behaviour
LFP's olivine cathode holds its oxygen tightly, so thermal runaway typically starts at higher temperatures than nickel-rich cells and releases noticeably less heat. It is not inert: a failing LFP cell still vents flammable electrolyte vapour and hydrogen, and large prismatic cans store a lot of energy in one place.
Handling LFP Prismatic
Collecting a BYD Seal Performance pack
82.5 kWh, 1 modules, about 611 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
6.12 kg
nickel
0 kg
cobalt
0 kg
manganese
0 kg
copper
18.5 kg
aluminium
22.09 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.
BYD Seal Performance in Changsari, Assam: common questions
Can I drop off a BYD Seal Performance battery at Changsari, Assam?
Yes, by appointment. Guwahati — Changsari North-East Yard accepts whole BYD Seal Performance packs; book a collection or a drop-off slot so the site can prepare packaging and paperwork.
What happens to BYD Seal Performance 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 56% of the pack goes to second life and the rest is refined.
How should a BYD Seal Performance 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 BYD Seal Performance 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.
BYD Seal Performance at other sites
Retiring BYD Seal Performance 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.