Battery Compatibility

This is where a variant gets its battery ratings. Work happens in two steps on one page.

Permissions: compatibilities.view to see the page, compatibilities.create / update / delete for the actions.

Step 1 — Select Target Variant

1. Model — pick a model (shows brand in brackets).
2. Variant — pick one of that model’s variants (enabled after a model is chosen).
3. If the model has no variants, you’ll see a note pointing you to the Models page first.

Step 2 — Compatibility Entries

Once a variant is selected, the entries card appears showing Model – Variant and an Add Entry button.

Each entry row has:

Field	Notes
Battery Type	Pick from Battery Types (required).
Power Value	Positive number, decimals allowed, e.g. 2.5 (required).
Power Unit	KW (Kilowatt) or W (Watt).

Rules and actions:

• The entries list scrolls inside the card (header stays visible) so long lists don’t push the page down.
• Add Entry appends a blank row. Delete removes a row (saved rows call the server immediately with a success toast; unsaved rows just disappear).
• Problems are shown as a red message above the table (e.g. Row 2: choose a battery type.).
• Click Save Compatibility to save all rows at once (creates + updates). The button shows Saving… while working; a toast confirms success.