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