What We Offer
Evidence-based diagnostics for every EV
- Service 01
Battery Health Assessments
A comprehensive evaluation of your EV's battery pack using professional-grade diagnostic tools. Understand your battery's true state of health, remaining capacity, and degradation trajectory — not just what the dashboard shows.
- State of Health (SoH) measurement with calibrated equipment
- Cell-level voltage balance and deviation analysis
- Capacity vs. rated specification comparison
- Thermal management system evaluation
- Written report with findings and recommendations
- Service 02
EV Pre-Purchase Inspections
Before you commit to a used EV purchase, get an independent assessment of the vehicle's actual condition. Dealer-reported battery health figures are often misleading — our inspection gives you the real numbers.
- Independent battery health assessment
- Charging system and port condition check
- Diagnostic trouble code scan and interpretation
- Drive system and regenerative braking evaluation
- Detailed written report for negotiation or peace of mind
- Service 03
Diagnostic Trouble Code Analysis
Warning lights and fault codes decoded with context. We go beyond reading the code — we interpret what it means for your specific vehicle, identify root causes, and provide clear guidance on next steps.
- Full DTC scan across all vehicle modules
- Root cause analysis beyond surface-level code reading
- Historical fault code review
- Priority ranking of issues by severity
- Plain-language explanation of findings
- Service 04
Charging System Evaluation
Charging problems are among the most common EV complaints. We evaluate your onboard charger, charging port, and charging behaviour to identify inefficiencies, faults, or compatibility issues.
- Onboard charger performance testing
- Charging port condition and connector assessment
- AC and DC charging rate verification
- Charging curve analysis and anomaly detection
- EVSE compatibility and infrastructure guidance
What you'll receive after every assessment
Every EVS Diagnostics report includes a plain-English summary alongside the raw data — so you understand exactly what's happening with your battery, not just the numbers.
Our Approach
Diagnostics built on evidence
No dealer affiliation. No upsell pressure. Just rigorous, data-driven analysis of your electric vehicle — delivered with full transparency.
Scientific rigour applied to every diagnosis
Evan Caton founded EVS Diagnostics to help Vancouver Island EV owners make informed decisions about their vehicles through independent diagnostics, battery health assessments, and technical consultation.
Evan holds a degree in Biochemistry — a multidisciplinary field combining chemistry, biology, physics, mathematics, and data analysis to understand complex systems. That scientific training built a strong foundation in measurement, critical thinking, and the interpretation of technical data. Those same skills are applied at EVS Diagnostics when evaluating battery health, vehicle performance, and diagnostic information.
Since 2019, Evan has operated his own successful business in the construction industry, with extensive experience managing projects, troubleshooting technical challenges, and delivering practical solutions for clients. He also serves as CTO for an electric equipment company, where he works with electric drive systems, batteries, motor controllers, charging systems, and emerging electrification technologies.
After purchasing a BEV truck in 2023, Evan developed a strong interest in BEV technology and the realities of EV ownership — from charging infrastructure and battery performance to long-term ownership considerations. EVS Diagnostics was created to provide the kind of independent, objective information that helps owners and buyers move forward with confidence.
Every EV owner deserves to know the true state of their battery — not a manufacturer estimate, not a dealer's assurance. The actual data.— Evan Caton
As an independent third party, we provide objective assessments that help buyers, owners, and dealers make informed decisions with confidence.
Every conclusion is grounded in measured data. We show our work and explain our reasoning.
Plain-language reports. No jargon, no hidden findings. You get everything we find.
Ready to understand your EV?
Book an assessment and get the honest, data-driven picture of your electric vehicle's health. We come to you — anywhere on Vancouver Island.
Vancouver Island Communities
- Courtenay
- Comox
- Cumberland
- Campbell River
- Parksville
- Qualicum Beach
- Nanaimo
- + surrounding areas
Mobile service — no fixed address.
Contact us and we'll confirm coverage.
Get in Touch
Book your assessment
Tell us about your vehicle and what you need. We'll confirm availability and service area coverage.
No fixed address — we come to your home, workplace, or wherever your vehicle is located across Vancouver Island.
We respond to all inquiries within 2-3 business day(s). Evan reviews every message personally.
Evan Caton, EVS DiagnosticsTell us about your EV
Share your vehicle details and what you're looking for. We'll get back to you within 1 business day.