Battery Test Engineer

BN Associates Inc.; Sunnyvale (CA); On-site; USD 110,000 - 160,000; Full time

Job summary

BN Associates Inc. in Sunnyvale, CA is seeking a hands-on Battery Test Engineer to support validation and characterization for consumer wearable products.

You will plan, execute, and report on laboratory tests of cells, packs, charging systems, and related power electronics. The ideal candidate is meticulous, safety-conscious, and comfortable in a fast-paced hardware development lab, with 5–12 years of battery testing experience.

Qualifications

• 5–12 years of experience in battery testing.
• Hands-on lab experience with battery cells, packs, charging systems, and power electronics.
• Mitigate safety risks while performing tests and handling materials.

Responsibilities

• Set up and execute battery characterization tests: charge/discharge cycling, capacity, internal resistance, load sweeps, and temperature-dependent behavior.
• Operate lab instrumentation (source meters, electronic loads, battery cyclers, data acquisition systems, oscilloscopes, thermal chambers) and maintain calibration and safety standards.
• Perform bench bring-up, functional testing, and characterization of power supply circuits, regulators, and power rails.
• Build and maintain test fixtures, harnesses, and instrumentation for cells, packs, chargers, and power rails.
• Capture, process, and analyze test data; identify anomalies, trends, and failure signatures; summarize findings in clear reports.
• Support charging-system, fuel-gauge, and battery-management validation, including brownout, peak-power, and protection behavior.
• Assist in root‑cause investigations and characterization of power/battery issues discovered during bring‑up and validation.
• Document test plans, procedures, and results; keep organized records of raw data and derived metrics.

Skills

Battery characterization

Test instrumentation

Data analysis

Lab safety

Root-cause analysis

Tools

Source meters

Electronic loads

Battery cyclers

Oscilloscopes

Thermal chambers

Job description

Title: Battery Test Engineer (Consumer wearable product)

Location: Sunnyvale, CA (Onsite

Full Time

Exp: 5-12 years

We are seeking a hands-on Battery Test Engineer to support battery-related validation and characterization activities. Working closely with the battery systems lead, this role focuses on planning, executing, and reporting on laboratory testing of battery cells, packs, charging systems, and associated power electronics. The ideal candidate is meticulous, safety-conscious, and comfortable working in a fast-paced hardware development lab.

What You will Do:

• Set up and execute battery characterization tests: charge/discharge cycling, capacity, internal resistance, load sweeps, and temperature-dependent behavior.
• Operate lab instrumentation (source meters, electronic loads, battery cyclers, data acquisition systems, oscilloscopes, thermal chambers) and maintain calibration and safety standards.
• Perform bench bring-up, functional testing, and characterization of power supply circuits, regulators, and power rails.
• Build and maintain test fixtures, harnesses, and instrumentation for cells, packs, chargers, and power rails.
• Capture, process, and analyze test data; identify anomalies, trends, and failure signatures; summarize findings in clear reports.
• Support charging-system, fuel-gauge, and battery-management validation, including brownout, peak‑power, and protection behavior.
• Assist in root‑cause investigations and characterization of power/battery issues discovered during bring‑up and validation.
• Document test plans, procedures, and results; keep organized records of raw data and derived metrics.