README
Mena Dominance Law Battery Experiment Data Package
Author: Arlex Orlando Murcia Mena

Overview

This download package contains the experimental data, software tools, and summary documents associated with the battery experiments described in the Mena Dominance Law paper.

The purpose of this package is to allow readers to:

• view the summarized results reported in the paper
• inspect the processed outcome tables
• access the raw run datasets used for analysis
• understand the discharge step-down schedules used
• examine the experiment control software used to collect the data

All files are organized so that a reader can move from high-level results down to raw measurements and experiment software.

Folder Structure

The package contains the following folders and files:

MDL_Batteries_CSV
MDL_Battery_Outcomes_Summary_CSV
software
MDL_Battery_Outcomes_Summary.pdf
MDL_Experiment_setup.pdf
README.txt

Each component is described below.

MDL_Batteries_CSV

This folder contains the raw run data generated during the battery discharge experiments.

Each CSV file corresponds to a single experiment run executed using the ET5406A+ electronic load.

The CSV files contain the following columns:

Run
Identifier for the experiment run.

Timer
Elapsed runtime since the start of the test.

Set_A
Current setpoint commanded to the load.

V
Measured battery pack voltage.

A
Measured discharge current.

W
Measured power.

Ohm
Estimated resistance reported by the electronic load.

Wh
Integrated watt-hours delivered up to that time.

Ah
Integrated amp-hours delivered up to that time.

Temp_C
Temperature in Celsius from the external sensor.

Temp_F
Temperature in Fahrenheit from the external sensor.

Step
Step index of the discharge step-down schedule.

These files represent the time-series measurements recorded during each discharge run.

MDL_Battery_Outcomes_Summary_CSV

This folder contains processed summary tables derived from the raw run data.

These CSV files correspond to the tables used in the battery outcomes summary document.

Files in this folder include:

reported_overall_outcomes.csv
Summary of pooled experiment outcomes across all batteries.

reported_per_battery_outcomes.csv
Outcome comparisons for each battery pack individually.

reported_recovery_outcomes.csv
Post-cutoff recovery voltage measurements.

reported_stepdown_schedule.csv
The step-down current schedules used for each battery pack.

These files provide the summarized results used in the analysis and are easier to read than the raw datasets.

software

This folder contains the software tools used to collect the experimental data.

Contents include:

MDL_step_down.py
Python program used to control the electronic load and log measurements.

TEMPer_V28.0
Manufacturer software used to log temperature data from the TEMPer USB temperature sensor.

The Python software communicates directly with the electronic load using SCPI commands through a serial COM interface. It implements the step-down discharge schedule described in the paper and records all measurements to CSV files.

Temperature data is read from the TEMPer logging software and synchronized with the electrical measurements.

MDL_Battery_Outcomes_Summary.pdf

This document contains the summarized results of the battery experiments.

It includes:

• battery models used in the study
• step-down discharge schedules
• per-battery performance outcomes
• pooled results across all packs
• recovery voltage results
• BCM-style reference control logic

This file is intended as the main results document for readers who want a clear overview of the battery outcomes.

MDL_Experiment_setup.pdf

This document describes the physical experimental setup used during testing.

It includes information about:

• the electronic load hardware
• battery packs used
• measurement signals
• temperature monitoring
• cutoff conditions
• logging procedures

This document provides the context needed to understand how the experiments were conducted.

Experiment Hardware

The experiments used the following primary equipment:

Electronic load
Yertai ET5406A+ programmable DC load

Temperature sensor
TEMPer USB temperature sensor

Battery chargers
Original manufacturer chargers for each battery pack

Measurement signals recorded:

• pack voltage
• discharge current
• power
• resistance estimate
• temperature

Discharge Control Policy

Two discharge policies were used during testing:

Regular baseline policy (R)

Constant-current discharge until the pack voltage reached the cutoff threshold.

Mena step-down policy (M)

A four-step current reduction schedule as the battery voltage approached cutoff.

The step-down schedule reduces current gradually near the boundary, allowing additional usable energy to be extracted before reaching the cutoff voltage.

The schedules used for each battery pack are documented in:

reported_stepdown_schedule.csv

Data Processing

Raw experiment runs were logged as CSV files during testing.

From these datasets, the following quantities were calculated:

• runtime to cutoff
• delivered energy (Wh)
• delivered charge (Ah)
• initial voltage sag
• recovery voltage after cutoff

These results were then summarized into the outcome tables included in the summary CSV files and the outcomes PDF.

Notes for Users

If you want to analyze the data yourself:

Start with the summary CSV files in
MDL_Battery_Outcomes_Summary_CSV

For deeper analysis, examine the raw datasets in
MDL_Batteries_CSV

If you want to reproduce the experiment control behavior, review the software in
software/MDL_step_down.py

The Python script demonstrates how the electronic load was controlled and how measurements were logged.

Author

Arlex Orlando Murcia Mena

This dataset and software were developed as part of the experimental validation work supporting the Mena Dominance Law research.