Field note
Portable panels stopped being a daily habit once the campsite routine got crowded.
Rig
27-foot travel trailer with portable 200W suitcase panel
Conditions
Mixed desert and state-park stays with partial afternoon shade
The panel only helped when it came out early, got moved once, and the cable run stayed short enough that setup felt worth it.
What changed the outcome
The real fix was treating the portable panel as recovery insurance, not the whole solar plan. Roof solar handled the daily base load and the suitcase only came out on longer stays.