celljar v0.2.0 — initial publish

README.md

@@ -0,0 +1,211 @@
+---
+license: cc-by-4.0
+language:
+  - en
+pretty_name: celljar
+tags:
+  - battery
+  - lithium-ion
+  - energy-storage
+  - timeseries
+  - electrochemistry
+  - bms
+  - hppc
+  - cycling
+size_categories:
+  - 10K<n<100M
+task_categories:
+  - time-series-forecasting
+  - tabular-regression
+source_datasets:
+  - bills
+  - clo
+  - ecker
+  - hnei
+  - matr
+  - nasa_pcoe
+  - naumann
+  - ornl
+---
+
+# celljar
+
+**Public battery cell test data, harmonized and sealed in one schema (Parquet + JSON).**
+
+celljar reads raw files from published sources and writes them into one
+canonical schema across four entities: `cell_metadata` + `test_metadata`
+(JSON), `timeseries` + `cycle_summary` (Parquet). Consumers read one format
+instead of writing per-source loaders.
+
+**Scope: harmonization only.** celljar focuses on measurements — unit
+conversion and schema normalization. It deliberately leaves fitting and
+modeling to downstream tools that specialize in those steps.
+
+- Upstream code / issue tracker: <https://github.com/mihnathul/celljar>
+- Sources in this snapshot: `BILLS`, `CLO`, `ECKER`, `HNEI`, `MATR`, `NASA_PCOE`, `NAUMANN`, `ORNL`
+- Contents: **273 cells**, **348 tests**, **167,820,250 timeseries rows**
+
+## Files
+
+```
+cells/*.json              # one file per cell (hardware metadata)
+tests/*.json              # one file per test (protocol + provenance + observed stats)
+timeseries.parquet        # all tests' V/I/T samples; join on test_id
+cycle_summary.parquet     # per-cycle aggregates (aging studies); join on (test_id, cycle_number)
+```
+
+## Schema (overview)
+
+Four entities; field list generated from the authoritative [JSON Schemas](https://github.com/mihnathul/celljar/tree/main/schemas):
+
+- **`cell_metadata`** (JSON, one file per cell) — `cell_id`*, `source`*, `source_cell_id`, `manufacturer`, `model_number`, `chemistry`*, `cathode`, `anode`, `electrolyte`, `form_factor`*, `nominal_capacity_Ah`, `nominal_voltage_V`, `max_voltage_V`, `min_voltage_V`
+- **`test_metadata`** (JSON, one file per test) — `test_id`*, `cell_id`*, `test_type`*, `temperature_C_min`, `temperature_C_max`, `soc_range_min`, `soc_range_max`, `soc_step`, `c_rate_charge`, `c_rate_discharge`, `protocol_description`, `num_cycles`, `soh_pct`, `soh_method`, `cycle_count_at_test`, `test_year`, `source_doi`, `source_url`, `source_citation`, `source_license`, `source_license_url`, `n_samples`, `duration_s`, `voltage_observed_min_V`, `voltage_observed_max_V`, `current_observed_min_A`, `current_observed_max_A`, `temperature_observed_min_C`, `temperature_observed_max_C`, `sample_dt_min_s`, `sample_dt_median_s`, `sample_dt_max_s`
+- **`timeseries`** (Parquet, one row per measurement sample) — `test_id`*, `cycle_number`*, `step_number`, `step_type`, `timestamp_s`*, `voltage_V`, `current_A`, `temperature_C`, `coulomb_count_Ah`, `energy_Wh`, `displacement_um`
+- **`cycle_summary`** (Parquet, one row per cycle / aging checkpoint) — `test_id`*, `cell_id`*, `cycle_number`, `equivalent_full_cycles`, `elapsed_time_s`, `capacity_Ah`, `capacity_retention_pct`, `resistance_dc_ohm`, `resistance_dc_pulse_duration_s`, `resistance_dc_soc_pct`, `energy_Wh`, `coulombic_efficiency`, `temperature_C_mean`
+
+`*` = required field (others nullable). See [JSON Schemas](https://github.com/mihnathul/celljar/tree/main/schemas) for full type info, enum values, and constraints.
+
+SI units. Relative timestamps. Missing data is explicit `null` (no NaN
+sentinels). Current sign convention: positive = charge (into the cell),
+negative = discharge.
+
+Join keys: `cells.cell_id = tests.cell_id`, `tests.test_id = timeseries.test_id`,
+`(tests.test_id, cycle_number) = cycle_summary.(test_id, cycle_number)`.
+
+## Quick start
+
+### DuckDB — read everything in place, no download
+
+```sql
+INSTALL httpfs; LOAD httpfs;
+SELECT c.chemistry, c.nominal_capacity_Ah,
+       t.test_id, t.test_type, t.soh_pct,
+       COUNT(*) AS n_samples
+FROM read_json('https://huggingface.co/datasets/mihnathul/celljar/resolve/main/cells/*.json')  c
+JOIN read_json('https://huggingface.co/datasets/mihnathul/celljar/resolve/main/tests/*.json')  t
+  ON c.cell_id = t.cell_id
+JOIN 'https://huggingface.co/datasets/mihnathul/celljar/resolve/main/timeseries.parquet'       ts
+  ON t.test_id = ts.test_id
+GROUP BY 1,2,3,4,5
+ORDER BY t.test_id;
+```
+
+### pandas — predicate-pushdown read of one test
+
+```python
+import pandas as pd
+
+df = pd.read_parquet(
+    "https://huggingface.co/datasets/mihnathul/celljar/resolve/main/timeseries.parquet",
+    filters=[("test_id", "==", "ORNL_LEAF_2013_HPPC_25C")],
+)
+print(df.head())
+```
+
+### `datasets` library — streaming
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset(
+    "parquet",
+    data_files="https://huggingface.co/datasets/mihnathul/celljar/resolve/main/timeseries.parquet",
+    split="train",
+    streaming=True,
+)
+for row in ds.take(5):
+    print(row)
+```
+
+### `huggingface_hub` — pull the whole bundle locally
+
+```python
+from huggingface_hub import snapshot_download
+
+local = snapshot_download(repo_id="mihnathul/celljar", repo_type="dataset")
+print(local)  # contains cells/, tests/, timeseries.parquet
+```
+
+## License & citation
+
+The science here belongs to the original authors; celljar simply puts their
+data in one place with a shared schema. Please cite their papers when you use
+the data, and, if it's helpful, celljar alongside.
+
+- **This harmonized bundle** (packaging, schema, derived test-metadata fields):
+  [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/).
+- **Upstream raw data** retains each publisher's original license — listed
+  per-source below. Each source's license terms apply when you use its tests.
+
+To make attribution easy, every `tests/*.json` row carries its own
+`source_doi`, `source_citation`, `source_license`, and `source_license_url`
+fields, so you can pull references for any analysis with one query.
+
+## Per-source citations
+
+### BILLS
+
+> Bills, A., Sripad, S., Fredericks, W. L., et al. (2023). A battery dataset for electric vertical takeoff and landing aircraft. Scientific Data 10, 344. https://doi.org/10.1038/s41597-023-02180-5
+
+**License:** CC-BY-4.0 · [license terms](https://creativecommons.org/licenses/by/4.0/) · [dataset](https://kilthub.cmu.edu/articles/dataset/eVTOL_Battery_Dataset/14226830) · DOI: `10.1184/R1/14226830`
+
+### CLO
+
+> Attia, P. M., Grover, A., Jin, N., et al. (2020). Closed-loop optimization of fast-charging protocols for batteries with machine learning. Nature 578, 397-402. https://doi.org/10.1038/s41586-020-1994-5
+
+**License:** CC-BY-4.0 · [license terms](https://creativecommons.org/licenses/by/4.0/) · [dataset](https://data.matr.io/1/projects/5d80e633f405260001c0b60a) · DOI: `10.1038/s41586-020-1994-5`
+
+### ECKER
+
+> (citation unavailable in harmonized bundle)
+
+**License:** see upstream
+
+### HNEI
+
+> Kollmeyer, P. (2018). Panasonic 18650PF Li-ion Battery Data. Mendeley Data, v1. https://doi.org/10.17632/wykht8y7tg.1
+
+**License:** CC-BY-4.0 · [license terms](https://creativecommons.org/licenses/by/4.0/) · [dataset](https://data.mendeley.com/datasets/wykht8y7tg/1) · DOI: `10.17632/wykht8y7tg.1`
+
+### MATR
+
+> Severson, K. A., Attia, P. M., Jin, N., et al. (2019). Data-driven prediction of battery cycle life before capacity degradation. Nature Energy 4, 383-391. https://doi.org/10.1038/s41560-019-0356-8
+
+**License:** CC-BY-4.0 · [license terms](https://creativecommons.org/licenses/by/4.0/) · [dataset](https://data.matr.io/1/projects/5c48dd2bc625d700019f3204) · DOI: `10.1038/s41560-019-0356-8`
+
+### NASA_PCOE
+
+> Saha, B. & Goebel, K. (2007). Battery Data Set. NASA Prognostics Data Repository, NASA Ames Research Center, Moffett Field, CA. https://www.nasa.gov/intelligent-systems-division/discovery-and-systems-health/pcoe/pcoe-data-set-repository/ Cells are 18650 Li-ion; chemistry/vendor not disclosed by NASA — community consensus treats them as LCO.
+
+**License:** CC0-1.0 · [license terms](https://creativecommons.org/publicdomain/zero/1.0/) · [dataset](https://www.nasa.gov/intelligent-systems-division/discovery-and-systems-health/pcoe/pcoe-data-set-repository/)
+
+### NAUMANN
+
+> Naumann, M. (2021). Data for: Analysis and modeling of calendar/cycle aging of a commercial LiFePO4/graphite cell. Mendeley Data. DOIs: 10.17632/kxh42bfgtj.1 (calendar) and 10.17632/6hgyr25h8d.1 (cycle). Companion papers: Naumann et al. JPS 2018 doi:10.1016/j.est.2018.01.019, Naumann et al. JPS 2020 doi:10.1016/j.jpowsour.2019.227666
+
+**License:** CC-BY-4.0 · [license terms](https://creativecommons.org/licenses/by/4.0/) · [dataset](https://data.mendeley.com/datasets/kxh42bfgtj/1) · DOI: `10.17632/kxh42bfgtj.1`
+
+### ORNL
+
+> Wiggins, G., Allu, S., & Wang, H. (2019). Battery cell data from a 2013 Nissan Leaf. Oak Ridge National Laboratory. https://doi.org/10.5281/zenodo.2580327
+
+**License:** MIT · [license terms](https://opensource.org/licenses/MIT) · [dataset](https://zenodo.org/records/2580327) · DOI: `10.5281/zenodo.2580327`
+
+## Citing celljar
+
+If you'd like to cite celljar:
+
+```bibtex
+@software{celljar,
+  author = {Mihna Neerulpan},
+  title  = {celljar: Public Battery Test Dataset Harmonization with a Canonical Schema},
+  year   = {2026},
+  url    = {https://github.com/mihnathul/celljar},
+}
+```
+
+## Links
+
+- Code: <https://github.com/mihnathul/celljar>
+- Issues / new-source requests: <https://github.com/mihnathul/celljar/issues>
+- Canonical JSON Schemas: <https://github.com/mihnathul/celljar/tree/main/schemas>

cells/BILLS_EVTOL_VAH01.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH01",
+  "source_cell_id": "VAH01",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH02.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH02",
+  "source_cell_id": "VAH02",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH05.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH05",
+  "source_cell_id": "VAH05",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH06.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH06",
+  "source_cell_id": "VAH06",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH07.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH07",
+  "source_cell_id": "VAH07",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH09.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH09",
+  "source_cell_id": "VAH09",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH10.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH10",
+  "source_cell_id": "VAH10",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH11.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH11",
+  "source_cell_id": "VAH11",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH12.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH12",
+  "source_cell_id": "VAH12",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH13.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH13",
+  "source_cell_id": "VAH13",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH15.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH15",
+  "source_cell_id": "VAH15",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH16.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH16",
+  "source_cell_id": "VAH16",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH17.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH17",
+  "source_cell_id": "VAH17",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH20.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH20",
+  "source_cell_id": "VAH20",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH22.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH22",
+  "source_cell_id": "VAH22",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH23.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH23",
+  "source_cell_id": "VAH23",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH24.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH24",
+  "source_cell_id": "VAH24",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH25.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH25",
+  "source_cell_id": "VAH25",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH26.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH26",
+  "source_cell_id": "VAH26",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH27.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH27",
+  "source_cell_id": "VAH27",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH28.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH28",
+  "source_cell_id": "VAH28",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/BILLS_EVTOL_VAH30.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "BILLS_EVTOL_VAH30",
+  "source_cell_id": "VAH30",
+  "source": "BILLS",
+  "manufacturer": "Sony-Murata",
+  "model_number": "US18650VTC6",
+  "chemistry": "NMC",
+  "cathode": "NMC",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 3.0,
+  "nominal_voltage_V": 3.6,
+  "max_voltage_V": 4.2,
+  "min_voltage_V": 2.5
+}

cells/CLO_B4C0.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C0",
+  "source": "CLO",
+  "source_cell_id": "b4c0",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C1.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C1",
+  "source": "CLO",
+  "source_cell_id": "b4c1",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C10.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C10",
+  "source": "CLO",
+  "source_cell_id": "b4c10",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C11.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C11",
+  "source": "CLO",
+  "source_cell_id": "b4c11",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C12.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C12",
+  "source": "CLO",
+  "source_cell_id": "b4c12",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C13.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C13",
+  "source": "CLO",
+  "source_cell_id": "b4c13",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C14.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C14",
+  "source": "CLO",
+  "source_cell_id": "b4c14",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C15.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C15",
+  "source": "CLO",
+  "source_cell_id": "b4c15",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C16.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C16",
+  "source": "CLO",
+  "source_cell_id": "b4c16",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C17.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C17",
+  "source": "CLO",
+  "source_cell_id": "b4c17",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C18.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C18",
+  "source": "CLO",
+  "source_cell_id": "b4c18",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C19.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C19",
+  "source": "CLO",
+  "source_cell_id": "b4c19",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C2.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C2",
+  "source": "CLO",
+  "source_cell_id": "b4c2",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C20.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C20",
+  "source": "CLO",
+  "source_cell_id": "b4c20",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C21.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C21",
+  "source": "CLO",
+  "source_cell_id": "b4c21",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C22.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C22",
+  "source": "CLO",
+  "source_cell_id": "b4c22",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C23.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C23",
+  "source": "CLO",
+  "source_cell_id": "b4c23",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C24.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C24",
+  "source": "CLO",
+  "source_cell_id": "b4c24",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C25.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C25",
+  "source": "CLO",
+  "source_cell_id": "b4c25",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C26.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C26",
+  "source": "CLO",
+  "source_cell_id": "b4c26",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C27.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C27",
+  "source": "CLO",
+  "source_cell_id": "b4c27",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C28.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C28",
+  "source": "CLO",
+  "source_cell_id": "b4c28",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C29.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C29",
+  "source": "CLO",
+  "source_cell_id": "b4c29",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C3.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C3",
+  "source": "CLO",
+  "source_cell_id": "b4c3",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C30.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C30",
+  "source": "CLO",
+  "source_cell_id": "b4c30",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C31.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C31",
+  "source": "CLO",
+  "source_cell_id": "b4c31",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}

cells/CLO_B4C32.json

@@ -0,0 +1,16 @@
+{
+  "cell_id": "CLO_B4C32",
+  "source": "CLO",
+  "source_cell_id": "b4c32",
+  "manufacturer": "A123 Systems",
+  "model_number": "APR18650M1A",
+  "chemistry": "LFP",
+  "cathode": "LFP",
+  "anode": "graphite",
+  "electrolyte": null,
+  "form_factor": "cylindrical",
+  "nominal_capacity_Ah": 1.1,
+  "nominal_voltage_V": 3.3,
+  "max_voltage_V": 3.6,
+  "min_voltage_V": 2.0
+}