Structure · dataset · 2025
Randomized Battery Usage 4: 40C Right-Skewed Random Walk
Listed in NASA Data Portal
This dataset is part of a series of datasets, where batteries are continuously cycled with randomly generated current profiles.
Description
Reference charging and discharging cycles are also performed after a fixed interval of randomized usage to provide reference benchmarks for battery state of health. In this dataset, four 18650 Li-ion batteries (Identified as RW25, RW26, RW27 and RW28) were continuously operated by repeatedly charging them to 4.2V and then discharging them to 3.2V using a randomized sequence of discharging currents between 0.5A and 5A.
This type of discharging profile is referred to here as random walk (RW) discharging. A customized probability distribution is used in this experiment to select a new load setpoint every 1 minute during RW discharging operation. The custom probability distribution was designed to be skewed towards selecting higher currents.
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The ambient temperature at which the batteries are cycled was held at approximately 40C for these experiments.
Links
Get the data
- RW_Skewed_High_40C_DataSet_2Post.zip data.nasa.gov/docs/legacy/ames/4.RW_Skewed_High_40C_DataSet_2Post.zip ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/randomized-battery-usage-4-40c-right-skewed-random-walk ↗
landing page · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=b5dd220b-e0dc-48a2-a356-6c78f2350… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Battery materials
Provenance · 1 source records, 7 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | b5dd220b-e0dc-48a2-a356-6c78f2350453 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[subject].local:topic:battery | mapping · data nasa gov | vocabulary-mapper@1.0.0 | keywords['batteries'] |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |