Anker SOLIX F3800 Plus: Who It's For and Who Should Skip It

Buy the Anker SOLIX F3800 Plus if you want 6,000 W of 120/240 V output for several house circuits at once, up to 3,200 W of solar input, and room to grow to multi-day backup with extra batteries. Skip it if you'll move it often, need a desktop PC to ride through outages (its UPS switchover is 20 ms), or have a 1 hp 240 V well pump; it can't start one. It holds 3,840 Wh of LiFePO4 with a 9,000 W surge and weighs at least 132.3 lb on wheels.

The ruled-out rows are all about weight: at 132.3 lb or more, the engine drops it wherever you said you'd carry the unit. Where wheels are fine, it covers a full outage day and an RV day on one charge, though lighter units rank higher for those loads.

What does it do well?

• Lots of 240 V output. 6,000 W at 120/240 V and a 9,000 W surge, through 6 household outlets, a TT-30 for an RV and an L14-30 for an inlet box or transfer switch.
• Starts a small well pump with a fridge running. About 7,570 W combined, inside its surge rating.
• Grows further than most. Up to six BP3800 batteries for 26,880 Wh, enough for about 12.8 days of fridge alone.
• Big solar input. Two inputs at up to 1,600 W each, 3,200 W in all (2 x 1600W, 11-165V 17A).
• Fast charging with the panel. 1,800 W from a standard outlet, and up to 6,000 W through Anker's 240 V Home Power Panel or a generator via the Generator Input Adapter.
• Warranty. 5 years, with the battery rated for 3,000 cycles to 80%.

What should you know before you buy?

• It's heavy, and the weight isn't settled. Anker's pages give 132.3, 135.6 and 136.7 lb. It moves on wheels and stays put.
• A 20 ms UPS switchover. Routers and modems usually ride through, but desktop PCs are marginal at 20 ms, so don't count on it to keep a PC running without a separate UPS.
• Connecting it to the house is electrician work. The Home Power Panel is a 12-circuit backup load center for indoor installation; Anker also sells a 10-circuit manual transfer switch. Either way, hire a licensed electrician and pull a permit.
• No 1 hp well pumps. A typical 1 hp 240 V pump needs about 11,200 W to start.
• Check the Amazon listing. We haven't found a standalone Amazon listing; the button searches Amazon, and some listings bundle an expansion battery, so check what's included.

What are the closest alternatives?

The EcoFlow DELTA Pro 3 is the direct rival: 4,096 Wh and 4,000 W at 120/240 V, a faster 10 ms switchover and 113.54 lb, but less output and expansion to 12,288 Wh; see DELTA Pro 3 vs F3800 Plus and our DELTA Pro 3 guide. The Jackery Explorer 5000 Plus goes bigger: 5,040 Wh and 7,200 W at 120/240 V at 134.5 lb, with a 0 ms online UPS mode on its 20 A outlets up to 3,600 W. If 120 V is enough, the much lighter Jackery HomePower 3600 Plus is worth a look; see F3800 Plus vs HomePower 3600 Plus and our HomePower 3600 Plus guide.

Who should buy it, and who shouldn't?

• Buy it if you want to run several 120 V and 240 V circuits at once through a panel or transfer switch, have a ½ hp 240 V well pump, or plan a large solar array and multi-day storage.
• Skip it if the unit has to move, a desktop PC must stay on through switchover, or you have a 1 hp pump. For a fridge and Wi-Fi overnight, a 1–2 kWh unit is a fraction of the weight. The sizing quiz checks your devices against every model.

More on this class: portable power station vs home battery, power station vs generator, what size solar panel you need, and every 240 V model in the comparison chart.