What an Outage Costs a Small Site
A shop, a cafe or a small office loses money during an outage in a specific order. First the card payments stop, which ends most sales on the spot. Then the refrigerated display starts its countdown, and stock begins to write itself off. Then the lights go and the doors close. A battery backup for business installation is sized against that list, and the buying decision is usually made by an owner who watched a competitor stay open through the last outage. Distributors who frame the product around the list sell solutions; distributors who quote amp-hours sell confusion.
The Essential Circuit Sheet
An illustrative sheet for a small retail site with a cafe counter:
| Load | Power | Hours per day | Energy |
|---|---|---|---|
| POS, router and card terminal | 80 W | 10 h | 800 Wh |
| Lighting, LED | 100 W | 6 h | 600 Wh |
| Refrigerated display | 250 W | 8 h | 2000 Wh |
| Laptop and phone charging | 60 W | 4 h | 240 Wh |
| Coffee machine class | 1200 W | 0.5 h | 600 Wh |
The illustrative total is about 4.2 kWh per day, with a peak around 1.5 kW when the coffee machine and the display compressor coincide. The sheet is the honest basis for the product conversation, and it takes ten minutes to fill in with the owner.
Mapping Products to Sites
Portable power stations cover the counter tier. The YueQi range spans 400 W, 600 W, 1200 W and 2500 W models, and a 1200 W class unit keeps the POS, router, lighting and device charging alive for a working day while accepting solar or wall recharge. The 51.2V mobile storage line at roughly 5 kWh, 10 kWh and 15 kWh covers the whole essential sheet for one to three days, moved into place on castors and recharged from the grid when it returns or from an array where one exists. Where the site wants a fixed installation, the integrated home storage units at 4.2 kW with 8 kWh and 6.2 kW with 16 kWh do the same job behind a small distribution board.
Worked Runtime Examples
Illustrative arithmetic on the essential bundle of about 300 W that keeps a site trading: a 5 kWh unit runs it for roughly 16 hours, a 10 kWh unit for roughly 32, and the coffee machine draws its share on top. These figures assume the rated energy between BMS cut-offs and ignore inverter losses, so the honest quote rounds down. The value of the exercise is that the owner hears the trade-offs in numbers before the purchase, not in apologies afterwards.
Deploying Without Rewiring the Shop
- Portable units power equipment directly through their outlets, which needs no electrician and survives a move to new premises
- A proper transfer arrangement by a qualified electrician is required before anything feeds fixed circuits; plugging a storage unit into a wall outlet to backfeed the building is unsafe and must never be suggested
- Recharge planning matters more than capacity for multi-day events: a unit that refills from the grid each night or from an array each morning doubles its effective coverage
Why Distributors Carry a Range
The small business channel rewards a price ladder. The portable units open the conversation at the counter tier, the mobile storage line closes it for sites with refrigeration, and the same installation crew and documentation serve both. Demonstration units pay for themselves: an owner who sees the card terminal, the router and a fridge running from a unit during a scheduled demo buys with a different set of questions than one reading a datasheet. Service and warranty flow should be agreed with the supplier in writing before the first order, along with certificate copies for the marks the market requires.
Where YueQi Fits
YueQi New Energy, based in Zhongshan, Guangdong, builds portable power stations from 400 W to 2500 W, a 51.2V mobile storage line from about 5 kWh to 15 kWh, and integrated storage units for fixed installations, all on LiFePO4. Catalog specifications are published per model, with CE and UN 38.3 marks shown on the literature and certificate copies available on request. Model runtimes for a specific load list, accessory sets and commercial terms are to be confirmed in writing.
Tell us the operating profile for this application on the quote page, and we will propose a pack specification and system layout in writing.