Is power bank rental profitable? A payback model you can check
Whether a shared power bank route is profitable is arithmetic, not opinion. Four numbers decide it, and every one of them can be measured or quoted before the first cabinet is ordered. The example below uses placeholder figures on purpose: replace each one with your own and the answer becomes yours.
The four numbers
Everything reduces to these: what the station costs to put on site, what a rental earns, how many rentals happen per day, and what the site costs to keep running each month. Two of them are quoted to you, two of them you measure. There is no fifth number that changes the conclusion.
- Capex: the station, the spare packs, the terminal and the freight, landed.
- Fee: the average rental take, after the tariff ladder and the daily cap.
- Rentals per day: the honest average, not the opening weekend.
- Monthly cost: venue share, power, connectivity, cleaning and maintenance.
The formula
Monthly net = (rentals per day × fee × 30) minus monthly cost. Payback in months = capex divided by monthly net. Break-even rentals per day = monthly cost divided by (fee × 30). Those three lines are the whole model, and they are worth doing on paper before a supplier sends a quotation.
Payback in months = capex / (rentals per day x fee x 30 - monthly cost). If the result is under one month or over twelve, check the inputs before you believe the output: those two answers usually mean a number was typed wrong.
A worked example with placeholder figures
Assume a fee of 1.50 per rental, a venue share of 20 percent of gross, 15 a month for power and connectivity, and 10 a month for cleaning and maintenance. Assume the station is paid for in full at the start. Every figure in the table is a placeholder: the shape of the answer is what transfers, not the numbers.
| Format | Capex (placeholder) | Rentals per day | Monthly net | Payback |
|---|---|---|---|---|
| 5 slot counter unit | 350 | 4 | 124 | 2.8 months |
| 8 slot station | 600 | 7 | 227 | 2.6 months |
| 24 slot cabinet | 1,600 | 16 | 526 | 3.0 months |
The interesting part is not that all three pay back in about three months. It is how fast the answer moves when one input moves. Halve the rentals on the 8 slot station to three and a half a day and the payback goes from about 2.6 months to about 5.9, because the venue share falls with revenue but the power and maintenance lines do not. That is why the count in the venue matters more than the price of the cabinet.
What moves the payback most
- Rentals per day, and it is the only input you can influence before the order by choosing a better venue.
- The venue deal: a fixed rent on a quiet site is worse than a 30 percent share on a busy one.
- Packs lost: each lost pack is a capex item that produces no revenue, and no deposit recovers it twice.
- Failed returns: a bay that does not detect a returned pack bills a guest who did nothing wrong.
- Downtime: a cabinet waiting three weeks for a bay assembly earns nothing for three weeks.
The costs first plans leave out
Four lines are missing from most spreadsheets. The spare pack pool, which is capex and not a consumable. The freight and the customs charges, which are capex too and are quoted separately from the unit price. The person who visits the sites, whose time is a real cost even when it is your own. And the replacement cycle for the packs, because a pack that holds a charge for six hours instead of eight is a rental that comes back late and a guest who does not rent again.
Add those four and the payback lengthens. It is still a business, but the number you plan against should be the longer one, because the short one assumes nothing ever fails.
A test you can run before you buy
Take one venue and count the busiest hour for two days. Multiply the count by an honest conversion rate: the share of those guests who would rent if a station were on the counter. Two percent is a pessimistic placeholder, five percent an optimistic one. Multiply by the fee and by 30, subtract the monthly cost, and divide the capex by what is left. If the answer is under twelve months at two percent, the venue is worth a station. If it is only viable at five percent, count again before ordering.
That test costs two afternoons and no hardware. It is also the conversation a supplier should be able to have with you, because the format and the slot count follow from the count, not from the price list.
Updated 2026-10-22 · 4 min read. Specifications and tariffs change without notice; confirm the current sheet before you publish a business plan or a tender document.
Questions that come back
Short answers, before the email.
What payback period is normal for a shared power bank station?
There is no published norm that survives contact with different markets, because capex, tariffs and venue shares differ by country. The model above is what to use instead: put your own quote and your own count into it and read the answer off the formula.
Is the ad screen the thing that makes it profitable?
Only where the screen inventory can actually be sold. A screen with no advertiser is a cost, not a revenue line. If you cannot name the person who will sell the ad slot, model the route without it.
Does a bigger cabinet pay back faster?
Not by itself. A 24 slot cabinet carries more capex and needs roughly proportional rentals per day to keep the same payback. It wins where the peak hour is real and a smaller station would be empty by nine in the evening.
What happens if a pack is lost?
The daily cap and the deposit or card authorisation are what recover it. Model the loss rate as a capex line rather than a monthly cost, and keep spare packs in the first order so a lost pack does not leave a bay empty for a month.
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