A US-Spec All-in-One Power Station: It Charges From the Wall, Not Just the Sun

A US-market all-in-one power station: 3.6kW inverter, 7.68kWh battery (25.6V 300Ah), with battery, inverter and MPPT integrated in one cabinet. The most overlooked design detail is the AC input — during an outage with poor sun, plug into mains or a generator to recharge. A walkthrough of the port layout and three ways to refill the battery.

This is an all-in-one power station built for the US market. Customers often ask whether "all in one" really means everything is inside — yes: battery, inverter and MPPT controller are integrated in a single cabinet. Connect panels and loads and it runs. But this walkthrough focuses on the most overlooked design detail: the AC input.

Basic configuration

3.6kW inverter, 7.68kWh battery — built from a 25.6V 300Ah pack, 8 cells in series. That covers overnight backup for a typical household: fridge, lighting, fans, TV and router, with room to spare.

Panel layout

The front carries the AC input switch and the PV input; the output side has two AC outlets. The logic is simple: inputs on the left, outputs on the right, so wiring mistakes are less likely.

Three ways to refill the battery

**Solar charging.** The primary method. Connect panels and the MPPT controller tracks the maximum power point, harvesting what it can even on overcast days.

**AC recharge.** The most practical feature on this unit. During consecutive cloudy days, or at night when the remaining charge will not last until sunrise, plug into mains and charge the battery. The dedicated AC input switch controls this path independently. For users who run a generator during outages, generator output can also refill through this port — running the generator only to charge, then shutting it down and letting the silent battery carry the loads, is far more efficient than powering loads directly.

**Hybrid.** Solar by day, mains top-up at night. Useful through long rainy seasons.

Why the AC input deserves its own section

Most buyers size an all-in-one on power and capacity and ignore refuelling flexibility. Solar during an outage is hostage to the weather; a second charging path through the mains is the fallback. The generator-plus-AC-recharge combination is especially valuable in typhoon and blizzard scenarios where sunlight may be absent for days.

Who this unit fits

Whole-home backup for users who do not want to match an inverter to a battery themselves. It is plug-and-play with panels and loads; where mains power exists, it can also participate in peak-valley management — charge on cheap night electricity, discharge during the evening peak.

FAQ

• What is the battery configuration of this US-spec unit?
  7.68kWh from a 25.6V 300Ah battery pack, paired with a 3.6kW inverter. Battery, inverter and MPPT controller are integrated in one cabinet — connect solar panels and loads and it runs.
• What is the AC input for?
  During an outage under consecutive cloudy days, solar alone may not refill the battery. Mains or a generator can recharge it through the AC input port. The panel has a dedicated AC input switch, so solar by day and mains at night complement each other.
• What can the outputs run?
  The panel provides two AC output ports. At 3.6kW rated output it covers a fridge, lighting, fans, TV and a washing machine together; allow surge headroom for motor loads.

Want the factory walkthrough video or a quote? Reach out to Luchu Energy and tell us your application — our engineers will spec a system.