Features
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 101voc,resistancepoints in the exact formatmodel-createaccepts, 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 atmodels.
Bug Fixes
lager battery <NET> model dischargeno 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 atmodels, 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.