William Medley
Lucas
Summary
Experienced Field Service Technician with 9+ years supporting, installing, and maintaining DC battery power systems in mission-critical environments. Proven expertise in battery technologies including VRLA, flooded lead-acid, and lithium-ion, along with rectifiers, chargers, and DC distribution systems. Highly skilled in troubleshooting, commissioning, preventive maintenance, and battery testing (impedance/ohmic, load bank, and capacity testing). Known for strong safety discipline, customer-facing professionalism, and the ability to work independently in the field while supporting team and project objectives.
Overview
9
9
years of professional experience
2008
2008
years of post-secondary education
Work History
Lead Field Service Technician
Power Storage Solutions
Dallas
10.2021 - Current
- Led field installation, commissioning, testing, and maintenance of DC battery power systems including VRLA, flooded lead-acid, lithium-ion, rectifiers, chargers, and DC distribution equipment.
- Supervised and mentored field technicians, ensuring adherence to safety standards, quality procedures, and project timelines.
- Performed battery inspections, capacity testing, impedance/ohmic testing, load bank testing, and failure analysis to ensure system reliability and compliance with specifications.
- Diagnosed and resolved DC power system issues, minimizing downtime and restoring critical power to customer sites.
- Coordinated field activities with project managers, engineers, and customers to execute installations, upgrades, and emergency service calls.
- Interpreted electrical schematics, single-line diagrams, and technical documentation to support accurate installation and troubleshooting.
- Enforced safety protocols including LOTO, PPE requirements, arc-flash awareness, and hazardous material handling.
- Managed job documentation including service reports, test results, as-built drawings, and compliance records.
- Conducted site surveys and provided technical recommendations for system upgrades, replacements, and preventive maintenance plans.
- Supported commissioning and acceptance testing for new systems, ensuring customer satisfaction and operational readiness.
- Traveled to customer sites to provide on-call and emergency support for mission-critical DC power systems.
Field Service Technician
Power Storage Solutions
Dallas
05.2018 - 10.2021
- Assisted in the installation, maintenance, and servicing of DC power systems including batteries (VRLA, flooded, lithium-ion), rectifiers, chargers, and DC distribution equipment.
- Supported senior and lead technicians during system commissioning, inspections, and testing activities.
- Performed basic battery maintenance tasks such as visual inspections, torque checks, voltage readings, and housekeeping.
- Assisted with battery testing including impedance/ohmic measurements, load bank testing, and data collection under supervision.
- Helped troubleshoot DC power system issues by following procedures and documenting findings.
- Read and followed electrical schematics, wiring diagrams, and work instructions.
- Maintained accurate service documentation, test reports, and job logs.
- Followed all safety procedures including PPE use, LOTO, hazardous material handling, and job site safety protocols.
- Traveled to customer sites to support installations, upgrades, preventive maintenance, and emergency service calls.
- Maintained tools, test equipment, and company vehicles in safe working condition.
- Demonstrated willingness to learn DC power systems, battery technologies, and field service best practices.
Field Service Technician
Interstate Powercare
Dallas
10.2016 - 05.2018
- Assisted in the installation, maintenance, and servicing of DC power systems including batteries (VRLA, flooded, lithium-ion), rectifiers, chargers, and DC distribution equipment.
- Supported senior and lead technicians during system commissioning, inspections, and testing activities.
- Performed basic battery maintenance tasks such as visual inspections, torque checks, voltage readings, and housekeeping.
- Assisted with battery testing including impedance/ohmic measurements, load bank testing, and data collection under supervision.
- Helped troubleshoot DC power system issues by following procedures and documenting findings.
- Read and followed electrical schematics, wiring diagrams, and work instructions.
- Maintained accurate service documentation, test reports, and job logs.
- Followed all safety procedures including PPE use, LOTO, hazardous material handling, and job site safety protocols.
- Traveled to customer sites to support installations, upgrades, preventive maintenance, and emergency service calls.
- Maintained tools, test equipment, and company vehicles in safe working condition.
- Demonstrated willingness to learn DC power systems, battery technologies, and field service best practices.
Education
Allen High School
Allen , TX Skills
- DC power systems
- Battery testing
- Electrical schematics
- Service documentation
- Failure analysis
- Safety compliance
- Technical recommendations
- Effective communication
- Team leadership
- Time management
- System installation
- Diagnostic testing
- Mechanical aptitude
- Verbal and written communication
References
References available upon request.
Timeline
Lead Field Service Technician
Power Storage Solutions
10.2021 - Current
Field Service Technician
Power Storage Solutions
05.2018 - 10.2021
Field Service Technician
Interstate Powercare
10.2016 - 05.2018
Allen High School