Trade-show visitors usually need a mid-day top-up, not a multi-day pack. Mid-range capacities keep unit cost sensible while still feeling useful. Prefer USB-C when your audience carries modern phones, and keep at least one USB-A for mixed devices.
Shortlist models with a clear logo area and durable finish. Browse our Power Banks category, then enquire with references and expected volumes.
Browse this category to compare models and enquire.