What Outages Actually Cost a Household
A home backup power project starts from a simple observation: a grid outage is inconvenient for a few hours and expensive for a few days. Refrigerated food is the first loss, followed by water in homes with pumped supply, then work and school interrupted, and in colder seasons the heating distribution stops with the fans and controllers. Households that have lived through a long outage buy backup equipment with a clear memory of that list. Distributors who sell to them should therefore start every conversation with the load sheet, not with the product, because the load sheet decides which product class is honest for the home.
Build the Essential Load Sheet First
The sheet does not need to cover the whole house. Most projects serve an essential-circuit tier, and the numbers below are an illustrative starting point that a buyer adjusts to the actual appliances:
| Load | Power | Hours per day | Energy |
|---|---|---|---|
| Refrigerator or freezer | 150 W | 8 h | 1200 Wh |
| Lighting, LED | 60 W | 5 h | 300 Wh |
| Router and network | 20 W | 24 h | 480 Wh |
| Television and set-top box | 100 W | 4 h | 400 Wh |
| Ventilation fan | 50 W | 6 h | 300 Wh |
| Kitchen basics, microwave class | 900 W | 0.5 h | 450 Wh |
The illustrative total is about 3.1 kWh per day. Two further numbers complete the sheet: the continuous power, here well under 1 kW with everything running, and the peak power, which is set by motor starts such as the refrigerator compressor. The battery size follows the daily energy; the inverter size follows the peak.
Mapping Loads to Product Lines
An integrated home energy storage unit is the natural fit for the essential-circuit tier. The YueQi catalog offers all-in-one units at 4.2 kW with 8 kWh and 6.2 kW with 16 kWh, with a photovoltaic input on board, which covers the load sheet above for two days or more at the 8 kWh size. Portable power stations from 400 W to 2500 W serve a second tier: renters, small apartments and households that want a first step without an installation. Selling both classes into one channel is common, because the portable unit often becomes the entry purchase and the integrated unit follows.
Solar Recharge and Autonomy
Autonomy is battery energy divided by daily load, but the real question is how fast the bank refills. A unit that recharges from an array on a sunny day restores a full day of essential load quickly; on a cloudy day the same array delivers a fraction. The practical planning rule is to size storage for one to two cloudless days and to define, with the household, which circuits stay on the second day. Where a generator input exists on the inverter class, it becomes the backstop for long outages.
Changeover Behavior and What to Confirm
Households care about one moment: the lights stay on when the grid drops. How a unit changes over, how fast it switches and which loads ride through depend on the model and the installation pattern. Catalog changeover timing values for these units are being confirmed by the manufacturer, so changeover behavior is to be confirmed in writing before ride-through is promised to end customers. The same applies to any parallel or split-phase arrangement the market requires.
Installation and Safety Notes
- Indoor location, dry and ventilated, with the clearances the manual requires
- Essential circuits separated at the distribution board by a qualified installer
- Cable sizing for the inverter's maximum current, fused close to the battery
- Local electrical code and any notification duties left with the installer of record
Questions Distributors Ask Before Stocking
- Which circuits do typical homes in the market back up, and at what daily energy?
- Which certificates apply to the models for this market, and are copies available?
- What installation training and documentation come with the units?
- How are warranty claims diagnosed and processed?
Certificate scope, training arrangements and commercial terms are to be confirmed in writing per project and market.
Where YueQi Fits
YueQi New Energy, based in Zhongshan, Guangdong, builds LiFePO4 home energy storage units at 4.2 kW with 8 kWh and 6.2 kW with 16 kWh, alongside portable power stations from 400 W to 2500 W and battery packs in the 12.8V, 25.6V and 51.2V classes. Specifications in the catalog are published per model, and any figure that needs confirmation is marked as such. Distributors planning a home backup line can start from the load sheet in this guide and confirm model details, certificates and commercial terms 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.