> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lagerdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Version 0.31.12

> July 15, 2026

## <u>Features</u>

* **`lager battery <NET> model-create <SLOT> --csv <file> [--force]` — create a custom battery model from a CSV file.** Writes a voltage/resistance curve into a Keithley 2281S memory slot (1-9); previously custom models could only be authored at the instrument's front panel. The CSV has two columns (`voc,resistance`, header optional) ordered from empty battery to full, with exactly 11 or 101 data rows — 11-row files are interpolated to 101 points by the instrument. Files are validated client-side with line-numbered errors (row count, VOC non-decreasing, resistance non-increasing, value ranges) before anything reaches the box. Saving overwrites the slot, and the instrument has no way to delete a saved model — a slot can only be overwritten — so occupied slots are refused unless `--force`.
* **`lager battery <NET> model-export <SLOT> --csv <out>` — export a saved battery model's curve to CSV.** Read-only: writes the slot's 101 `voc,resistance` points in the exact format `model-create` accepts, enabling the export -> edit -> create round-trip. Exporting reads the saved slot directly and never changes the active model; exporting an empty slot is an error that points at `models`.

## <u>Bug Fixes</u>

* **`lager battery <NET> model discharge` no longer fails with a misleading "slot appears to be empty" error.** Discharge mode is not selectable over SCPI on current 2281S firmware: the instrument rejects every recall form (numeric 0 is out of range — only slots 1-9 are valid recall arguments — and the DISCHARGE name and its quoted/abbreviated variants are syntax errors). The command now says so up front, pointing at the front panel and at `models`, and the model catalog no longer advertises a slot-0 DISCHARGE entry that was never actually loadable. A discharge selection made from the front panel still reads back as DISCHARGE.

## <u>Installation</u>

To install this version:

```bash theme={null}
pip install lager-cli==0.31.12
```

To upgrade from a previous version:

```bash theme={null}
pip install --upgrade lager-cli
```

## Resources

[View Release on PyPI](https://pypi.org/project/lager-cli/0.31.12/)