What an Agreed EV Battery Assessment Provides
A scoped assessment is designed to answer specific commercial or diagnostic questions. Assessment suitability, physical logistics, and technical scope are reviewed and confirmed in writing before any engagement is agreed.
Distinguishing Between Types of Battery Evidence
In the EV sector, different diagnostic methods deliver very different types of evidence. Clarifying what each indicator means helps prevent costly assumptions:
BMS-Derived State of Health (SoH)
Vehicle Internal Estimate
Read directly from the vehicle Battery Management System via standard diagnostics. It reflects the internal manufacturer algorithm, but can drift or mask latent cell imbalance if the pack has not experienced recent full calibration cycles.
Measured Capacity & Cycling
Physical Discharge Measurement
Where technical scope and bench facilities allow, physical cycling measures actual Ampere-hours (Ah) and kilowatt-hours (kWh) delivered under controlled discharge load. Availability depends on pack interface, bench access, and prior technical clearance.
Internal Resistance & Impedance
Cell Balance & Degradation
AC/DC resistance analysis across cell blocks to detect weak modules, micro-shorts, high-resistance interconnects, or thermal variance under load. Only available where direct contact or supported busbar interrogation is technically confirmed.
Clear Boundaries: What Reports Can and Cannot State
We operate with strict commercial and engineering transparency. Assessment findings are factual observations confined to the specific agreed scope.
- Documented BMS error history, current live telemetry, and freeze-frame sensor data.
- Cell-to-cell delta voltage observations at rest and under supported load parameters.
- Isolation resistance measurement findings against manufacturer minimum thresholds.
- Visual and physical inspection of casing, cooling junctions, and external bus connectors.
- Written explanation of test conditions, temperature variables, and methodological constraints.
- Not a Safety Certificate: Does not certify overall vehicle crashworthiness or non-electrical structural integrity.
- Not a Commercial Valuation: We provide engineering observations, not financial market valuations or retail pricing.
- Not a Warranty: Past or current test observations cannot guarantee future degradation rates or unpredictable mechanical cell faults.
- No Universal Vehicle Claim: Protocol support varies by OEM architecture; feasibility is verified before quotation.
- No Unauthorised Disassembly: High-voltage pack opening is only undertaken when expressly scoped, authorised, and supported.
Information Required Before an Assessment Scope is Quoted
Because EV battery chemistries, CAN communications, and physical pack configurations differ widely, we do not issue generic blind quotes. We require the following initial details to confirm whether assessment is technically viable:
1. Application
Exact vehicle make, model, model year, and nominal battery pack capacity (kWh).
2. Physical Location
Installed in drivable vehicle, non-running vehicle, or already removed as a module assembly.
3. Fault History
Any diagnostic trouble codes (DTCs), warning lights, crash triggers, or known thermal incidents.
4. Decision Objective
What practical business decision depends on the outcome (e.g. warranty dispute, stock buy, repair scope).
Discuss Your Battery Assessment Scope
Submit your enquiry below. We will review your battery application and respond with suitability feedback.