Parts Provenance
Parts Provenance
Every certified pack carries a signed lifecycle — from salvage core to warrantied install — exportable on demand.
Serialization
Each pack and module gets a durable serial label tied to its source VIN, chemistry, and build date before it leaves the bench.
Custody
Every transfer names the releasing node, receiving node, time, and physical serial so possession never becomes anonymous.
Grading
A-grade supports certified evidence, B-grade supports diagnosis, C-grade is supplemental, and failed material routes to controlled recovery.
Fraud Controls
Serial media, signed technician identity, calibrated tool records, and chained event hashes expose missing or duplicated claims.
Downstream Reuse
Serviceable modules route to matched repairs or stationary storage; terminal material routes to documented recovery.
Pack Intake
Serial label, source VIN and chemistry recorded at the bench before any test begins.
Quarantine Hold
Pack is isolated on a non-conductive rack. No listing, no sale, no teardown while flagged.
Isolation & Leak-Down
Megger isolation test, cell ΔV spread, thermal sweep and BMS handshake under load.
Grade Assignment
A-grade certifies, B-grade diagnoses, C-grade supplements, failed material routes to recovery.
Exchange Release
Signed ledger entry unlocks the listing. A failed gate routes the pack back or to documented recovery — never to sale.
Gen 3 Prius HV Battery — Reman A
4 evidence gates · 36 months / 36,000 miles
Open provenance →Camry Hybrid Inverter Assembly
4 evidence gates · 18 months / 18,000 miles
Open provenance →Ford Fusion Hybrid Module Set ×14
4 evidence gates · 12 months
Open provenance →Tesla Model 3 Long Range Pack — Core
4 evidence gates · Sold for evaluated recovery; no road-service warranty
Open provenance →Lexus RX 450h Transaxle MGR
4 evidence gates · 12 months / 12,000 miles
Open provenance →HHN-tracked packs outlast salvage
Core → Installed in 14 days
| Hash | When | Event | By |
|---|---|---|---|
| 0x9af2 | 2026-05-14 | Pack harvested · VIN 4T1•••2398 | Hub-LA-04 |
| 0xa017 | 2026-05-16 | Cell test passed · ΔV 31 mV | Tech #L3-118 |
| 0xa1c9 | 2026-05-19 | Reconditioned · 14 modules replaced | Hub-LA-04 |
| 0xa2e4 | 2026-05-21 | Hub Certified · Grade A | Inspector #C-22 |
| 0xa39b | 2026-05-22 | Listed · T3 $3,968 | HHN Exchange |
| 0xa4f0 | 2026-05-26 | Installed · VIN 1HG•••8821 | Hub-PHX-09 |
Core Exchange
A replacement battery can carry a refundable core credit without trusting a paper receipt. The extracted stack must match its photo and serial, move through a signed handoff, and reach an approved recycler, solar partner or reconditioner before funds unlock.
Funds remain frozen until receiving evidence is complete.
- 00:00
Replacement stack graded
81% SOH · serial and evidence anchored
- 00:01
Core credit frozen
$650 held against extracted stack
- 02:18
Removed core identified
65% SOH · macro photo + serial match
- 18:40
Regional handoff verified
Carrier scan and receiving spoke signed
- 19:05
Credit cleared
Shop balance released after receipt
Record the swap.
Seal the service history.
Authorized technicians can append a module swap to an assigned pack. The database assigns the next sequence and chains the event to the previous record.