| 4 | Very compact concept or constrained counter test | Use only when a small footprint matters more than battery buffer | Frequent attention may be required; exact public model is not confirmed | 4-slot selection |
| 6 | Small venue pilot and staff-visible counter placement | Useful when the team wants a limited first batch and clear replenishment routine | Compact service load; monitor unavailable-battery periods | 6-slot models |
| 8 | Balanced pilot for venues needing more buffer | Choose when 6 slots may turn over too quickly but a larger station is excessive | Moderate refill buffer without a large footprint | 8-slot models |
| 12 | Steadier venue demand or multi-period traffic | Use when observed rental and return patterns support more available batteries | Plan access, fault isolation and refill responsibility | 12-slot models |
| 16 | Higher-capacity station planning | Use product-catalog models only after footprint and service assumptions are verified | No standalone 16-slot detail page in this release | 16-slot catalog filter |
| 24 | High-traffic venue plan with a larger inventory buffer | Consider after demand, return availability and staff support are demonstrated | Requires an explicit refill, fault and exception process | 24-slot models |