Testing Protocols & Data Analysis

Practical tools and methodologies for optimizing inductive pulse charging experiments

Step-by-Step Testing Protocol

Systematic methodology for finding peak response frequencies and optimizing CoP

1Initial Setup & Safety

Review Safety Protocols

Complete review of all safety guidelines before beginning

Prepare Test Environment

Ensure proper ventilation, fire extinguisher nearby, insulated tools, safety gear

Assemble Test Circuit

Build circuit according to circuit diagrams with proper connections

Prepare Measurement Equipment

Calibrate multimeters, oscilloscope, current sensors, and electronic load

2Establish Baseline

Measure Initial Battery State

Record: Voltage, capacity (Ah), internal resistance, temperature

Document Battery Specifications

Type (Lead-Acid/LFP), capacity rating, age, previous usage history

Set Initial Parameters

Use Frequency Calculator tab to determine starting frequency range

3Frequency Sweep Testing

Coarse Sweep (Wide Range)

Test frequencies in 5-10 kHz increments across suggested range

Example: 5kHz, 10kHz, 15kHz, 20kHz, 25kHz, 30kHz...

Record Data for Each Frequency

Use Data Logger tab to record: frequency, voltage, current, power, temperature, duration

Identify Peak Response Region

Look for frequency range showing highest CoP or anomalous behavior

Fine Sweep (Narrow Range)

Test in 0.5-1 kHz increments around peak response region

Example: If peak at ~25kHz, test 23kHz, 23.5kHz, 24kHz, 24.5kHz, 25kHz, 25.5kHz...

4Parameter Optimization

Optimize Duty Cycle

At peak frequency, vary duty cycle (10%, 20%, 30%, 40%, 50%) and record results

Optimize Pulse Voltage

Adjust flyback voltage and observe CoP changes (higher isn't always better)

Test Pulse Width

Use Waveform Calculator to compute optimal pulse widths for different configurations

5CoP Calculation & Validation

Measure Total Energy Input

Record all energy supplied by run battery/power supply during pulse charging session

Discharge Charged Battery

Use electronic load to fully discharge battery back to starting voltage

Calculate CoP

CoP = Total Energy Out (Wh) / Total Energy In (Wh)

Repeat for Statistical Validation

Perform at least 3-5 complete cycles at optimal parameters to confirm repeatability

6Data Analysis & Documentation

Create Performance Curves

Use Analysis tab to visualize CoP vs. Frequency and other parameters

Export Data

Download CSV files for external analysis or sharing with research community

Document Findings

Record: Optimal frequency, CoP achieved, battery type, circuit configuration, environmental conditions

Expected Results (Based on Julian Perry's Research)

Lead-Acid Batteries (80Ah AGM)

CoP Range: 1.5 - 2.6

Peak frequency typically in 20-30 kHz range

Lithium Iron Phosphate (18Ah LFP)

CoP Range: 6 - 12

Higher performance than lead-acid, frequency varies