COMPARISON / HOME BACKUP / 120V–240V
BLUETTI Apex 300 vs Anker SOLIX F3800: Which Home Backup Power Station Should You Buy?
One unit that starts with more of everything, against a lighter system you build around over time. The specifications are not equivalent — and that is exactly what makes the choice clear.
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Check Apex 300 Price Check SOLIX F3800 Price These are different classes of system at very different prices. Check both listings before comparing further.Quick verdict
These two are not the same product at different prices. They are two different answers to the same question, and the answer you want depends on whether you are buying a unit or a system.
IF YOU WANT MAXIMUM CAPABILITY FROM ONE UNIT
Anker SOLIX F3800
3,840Wh and 6,000W continuous from a single box, native 240V through NEMA 14-50 and L14-30, up to 2,400W solar, and a documented path to 12kW / 53.8kWh with two units. It starts bigger and stays bigger without accessories.
6,000W AC 3,840Wh base
IF YOU WANT A LIGHTER MODULAR SYSTEM
BLUETTI Apex 300
2,764.8Wh and 3,840W from a unit weighing 83.78 lb — nearly 50 lb less than the F3800. Supports 120V/240V, up to 2,400W solar, 6,000+ rated cycles and expansion to roughly 19.4kWh on one unit.
83.78 lb 6,000+ cycles
The one question that decides it
Everything below is detail. This is the fork in the road.
- Single unit, no accessories, most power now → the F3800 review covers 6,000W and the 240V connections in full.
- Moving it between locations → the Apex 300 review covers what 83.78 lb buys you.
- Still deciding how much capacity you need at all → start with the 1kWh head-to-head before stepping up a class.
Side by side
| Specification | BLUETTI Apex 300 | Anker SOLIX F3800 |
|---|---|---|
| Base capacity | 2,764.8Wh | 3,840Wh |
| Battery chemistry | LiFePO₄ | LFP / LiFePO₄ |
| Rated AC output | 3,840W | 6,000W |
| High-load / surge | 7,680W Power Lifting | 9,000W surge |
| Voltage | 120V / 240V | 120V / 240V |
| 240V outlets | NEMA L14-50R | NEMA 14-50 + L14-30 |
| Max solar input | 2 × 1,200W (2,400W) | Up to 2,400W |
| Max AC input | Up to 1,800W | Up to 1,800W |
| Battery expansion | Up to 6 batteries per unit | Up to 6 batteries per unit |
| Max single-unit system | ~19.4kWh with 6 × B300K | ~26.9kWh with 6 batteries |
| Max multi-unit system | Larger multi-Apex configurations | 12kW / 53.8kWh with two F3800 |
| UPS switching | 0ms / 20ms modes by configuration | <20ms |
| App | Wi-Fi + Bluetooth | Wi-Fi + Bluetooth |
| Weight | 83.78 lb | 132.3 lb |
| Dimensions (in) | 20.67 × 12.87 × 12.6 | 27.6 × 15.3 × 15.6 |
| Warranty | 5 years | 5 years |
Peak, surge and Power Lifting figures are not continuous output and should not be compared against rated AC output. Expansion figures are manufacturer maximum-configuration claims.
The table immediately exposes the central trade-off: the F3800 gives you substantially more battery and inverter power from one box, and the Apex 300 is substantially smaller, lighter and cheaper to move.
Capacity: the F3800 starts about 39% ahead
The Apex 300 contains 2,764.8Wh. The F3800 contains 3,840Wh. That is a difference of 1,075.2Wh — roughly 39% more nominal capacity in the Anker.
An extra kilowatt-hour is not a rounding error. It translates into meaningful additional runtime for refrigerators, freezers, networking equipment, CPAP machines, lights, TVs and computers. If you are buying one unit and never intend to add a battery, that head start is a real advantage and it is there on day one.
Capacity becomes more complicated once expansion enters the picture, and we come back to that below.
AC output: the largest single difference
The Apex 300 provides 3,840W continuous. The F3800 provides 6,000W — more than a 50% increase in rated output.
Anker also specifies 9,000W surge, while BLUETTI advertises up to 7,680W Power Lifting. Those special high-load figures are not equivalent to normal continuous output and should not be read as such. For ordinary comparison the numbers that matter remain 3,840W against 6,000W.
For a single refrigerator or a laptop, the gap is irrelevant. Once several high-demand loads run at once — or once you add a well pump, a space heater or 240V equipment — the F3800's headroom stops being theoretical.
What each can actually run
| Load | Typical draw | Apex 300 | F3800 |
|---|---|---|---|
| Refrigerator | 100–300W | Yes | Yes |
| Freezer | 100–300W | Yes | Yes |
| Microwave | 1,000–1,500W | Yes | Yes |
| Coffee maker | 800–1,200W | Yes | Yes |
| Power tools | 500–2,000W | Yes | Yes |
| Space heater | ~1,500W | Yes | Yes |
| Several appliances at once | Varies | Glass ceiling lower | More headroom |
| 240V equipment | Varies | Supported | Supported |
Both handle far more than a 1kWh camping battery. The difference is not whether either can run your refrigerator — it is how many other things can run at the same time.
120V/240V: both reach serious home-backup territory
This is the main reason to consider either system over an ordinary portable power station. Both support 120V and 240V, which opens the door to equipment that 120V-only stations cannot easily power.
The Apex 300 offers a NEMA L14-50R 120V/240V output and 3,840W of total AC output from one unit. The F3800 offers both NEMA 14-50 and NEMA L14-30 240V outputs, and Anker designs the unit explicitly around home backup, RV equipment and generator-inlet style configurations.
If your 240V target is a specific appliance with a specific plug, check the outlet type before anything else. It is a more practical filter than the wattage number.
Home backup: the real reason to compare these two
For charging laptops at a campsite, both are overkill. The value appears during an outage, when a configured system keeps refrigerators, freezers, internet equipment, lights, computers, medical devices and cooking appliances running after the grid drops.
The meaningful difference is how much power is available immediately. The F3800's 6,000W inverter makes it easier to run several high-demand loads simultaneously from one box. The Apex 300 starts at 3,840W, but BLUETTI's architecture allows multiple Apex units to be combined in larger configurations, so the ceiling is raised by adding hardware rather than by buying a larger first unit.
Anker starts bigger. BLUETTI scales modularly.
Portability: not close
Apex 300: 83.78 lb. F3800: 132.3 lb. That is roughly a 48.5 lb difference.
The F3800 includes integrated industrial-grade wheels, which genuinely helps across a flat floor. But 132 lb is still 132 lb — up stairs, into a truck, out of an RV, or across ground where wheels are useless.
The Apex 300 is not light either. At almost 84 lb it is still a serious battery system. It is simply far easier to move, which matters most to buyers who relocate the unit rather than leaving it installed permanently.
Comparing current prices
The specification gap is fixed. The price gap is not.
Size: the Apex 300 is more compact too
Apex 300: 20.67 × 12.87 × 12.6 in. F3800: 27.6 × 15.3 × 15.6 in including wheels.
The F3800 is closer to a rolling home-energy appliance. The Apex 300 still feels like an oversized portable power station. That distinction matters for RV storage, vehicle transport, garages, cabins, small utility rooms and mobile work. For a permanent installation it matters far less.
Solar input: close at the base unit, different above it
The Apex 300 accepts 2 × 1,200W, for up to 2,400W. The F3800 accepts up to 2,400W as well. At the standard configuration these two are remarkably close, and 2.4kW is already well beyond what a folding-panel camping setup uses — it is enough for a genuinely serious off-grid array.
The comparison changes above the base unit. BLUETTI offers the SolarX 4K as part of larger Apex 300 configurations, which substantially increases what the broader system can accept. That matters if your goal is not "recharge my power station" but "build an energy system around solar". At that point you are no longer comparing two batteries — you are comparing two ecosystems.
Actual production still depends on weather, panel angle, temperature, shading, configuration and season. Maximum input is not guaranteed generation.
Expansion: both grow, but not to the same place
A single Apex 300 connects to up to six compatible expansion batteries. With six B300K batteries BLUETTI lists total capacity at 19,353.6Wh, and B500K configurations push it higher. Multiple Apex units can be combined into larger BLUETTI home-energy configurations.
A single F3800 connects to up to six Anker expansion batteries, for up to approximately 26.9kWh. Two F3800 units can be combined, and at maximum configuration Anker specifies 12kW output and 53.8kWh.
Both ecosystems end up far beyond short emergency backup. If you intend to expand, compare expansion battery prices, maximum capacity, solar hardware, home-integration equipment, installation requirements, available space and the 240V loads you actually want to run — not just the base-unit capacity.
UPS and battery longevity
The Apex 300 supports extremely fast UPS operation, including 0ms in supported modes and configurations, which BLUETTI positions for sensitive equipment. The F3800 specifies under 20ms. For ordinary household backup loads both transition quickly. If you are protecting genuinely sensitive equipment, verify the exact UPS configuration against that equipment's requirements rather than relying on the headline number.
Both use LiFePO₄ chemistry. BLUETTI rates the Apex 300 at 6,000+ cycles to 80%; Anker rates the F3800 at 3,000+ cycles and markets it around long-term home-energy use. Cycle ratings are design targets, not calendar-lifespan predictions — temperature, depth of discharge, charging behaviour, storage conditions and management all affect real aging.
Which is better for RV use?
The F3800 has built-in NEMA 14-50 and L14-30 connections and is designed with high-power RV use in mind; its 6,000W output provides considerable headroom. But at 132.3 lb it is a major piece of equipment to carry.
The Apex 300 weighs nearly 50 lb less and still provides RV-oriented connectivity, including a TT-30R outlet. BLUETTI also offers the Hub D1 for additional DC functionality.
So the RV question splits the same way: for a permanent or high-power RV installation the F3800's battery and inverter are attractive, while for a station that moves frequently the Apex 300's lower weight becomes increasingly valuable.
Which is better for EV charging?
The F3800 has the clearer advantage here. Anker includes a NEMA 14-50 output and markets the unit for direct EV charging, specifying charging through that connection at up to 6,000W / 240V.
One limitation is unavoidable regardless of brand: EV batteries are enormous compared with portable power stations. A 3.84kWh station will not fully charge a modern long-range EV. It can provide emergency range, or contribute as part of a larger expanded system. Buyers specifically interested in portable EV charging should weight the F3800's NEMA 14-50 connectivity heavily.
Which is better for off-grid living?
This depends less on the base station than on the system built around it. For modest off-grid loads the Apex 300's smaller size and modular architecture are attractive. For high-demand off-grid use the F3800's 6,000W inverter delivers more immediate power from one unit.
Once you start adding expansion batteries, large solar arrays, home integration equipment, generator charging or additional power stations, the comparison broadens well past these two products. For serious off-grid living, design the whole energy system — not just the first battery.
What each gets right — and what it costs you
BLUETTI APEX 300
Light and modular
Strengths: much lighter at 83.78 lb; more compact; 120V/240V support; up to 2,400W direct solar with system-level options above it; 6,000+ rated cycles; 0ms UPS in supported modes; highly modular ecosystem.
Costs: lower base capacity at 2.76kWh; lower standalone inverter output at 3,840W; some functionality needs extra BLUETTI hardware; still heavy for casual handling.
ANKER SOLIX F3800
Maximum power in one box
Strengths: 6,000W continuous output; 3,840Wh base capacity; native 120V/240V; NEMA 14-50 and L14-30; up to 2,400W solar; huge expansion potential; integrated wheels.
Costs: extremely heavy at 132.3 lb; large physical footprint; 3,000+ cycle rating against BLUETTI's higher figure; may be more capacity than a modest backup plan needs.
Two buyers, two different answers
Buyer A: “I want maximum capability from one unit.”
You care about running several household appliances, higher-demand loads, 240V, EV and RV connectivity, more base battery capacity, and less dependence on expansion hardware. The F3800's 3.84kWh / 6,000W architecture lines up with that directly.
Buyer B: “I want to start smaller and build as needed.”
You care about lower weight, a smaller footprint, strong solar capability, fast UPS behaviour, modular expansion and transportability. The Apex 300's 2.76kWh / 3,840W starting point fits that strategy more naturally.
Neither approach is automatically better. They solve the same problem differently.
Don't compare only the power station price
This matters more in this category than anywhere else on the site. You may be buying into an ecosystem that eventually includes expansion batteries, solar controllers, panels, home-integration hardware, transfer equipment, cables, RV equipment, installation and additional power stations.
Comparing the Apex 300 price against the F3800 price is only meaningful if you are buying the base units and stopping there. For a home-backup build, compare the total cost of the configuration you actually need. A lower-priced base station can end up costing more once required accessories are added, and a more expensive base station may already include functionality you would otherwise buy separately.
Design your target system first; compare prices second.
Final verdict
The Anker SOLIX F3800 starts with 3,840Wh, 6,000W continuous, 120V/240V, NEMA 14-50 and L14-30, up to 2,400W solar and a documented path to 12kW / 53.8kWh. It is built for buyers who want serious power immediately. The trade-off is equally clear: at 132.3 lb it is closer to a rolling home-energy system than a portable power station.
The BLUETTI Apex 300 starts with 2,764.8Wh, 3,840W, 120V/240V, up to 2,400W solar, 6,000+ rated cycles and roughly 19.4kWh of single-unit expansion — in an enclosure nearly 50 lb lighter.
So do not decide by asking which product has the bigger numbers. Ask: how much power do I need at one time, how much capacity do I need before expanding, will I move it regularly, do I need EV or high-power RV connectivity, will I build a large solar system, and do I intend to grow into whole-home backup later? Those answers will tell you more than the logo on the front.
Check today's prices
Both are ecosystem purchases. Compare the configuration you actually intend to build.
STILL DECIDING?
Read one of them in full
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Frequently asked questions
Which has more battery capacity?
The Anker SOLIX F3800, at 3,840Wh against 2,764.8Wh for the BLUETTI Apex 300 — roughly 39% more nominal capacity in the Anker.
Which has more AC output?
The F3800, at 6,000W continuous, against 3,840W from a single Apex 300. Surge and Power Lifting figures are not continuous output.
Do both support 240V?
Yes. Both support 120V/240V applications, but the connections and supported system configurations differ — the F3800 offers NEMA 14-50 and L14-30, while the Apex 300 offers a NEMA L14-50R output.
Which is lighter?
The Apex 300, at approximately 83.78 lb against 132.3 lb for the F3800 — a difference of roughly 48.5 lb.
Which supports more solar input?
At the base-unit level both support up to about 2,400W. BLUETTI also offers additional solar hardware, such as the SolarX 4K, for larger Apex 300 system configurations.
Can either be expanded with extra batteries?
Yes, both. A single Apex 300 supports up to six compatible expansion batteries, reaching roughly 19.4kWh with six B300K units. A single F3800 supports up to six Anker expansion batteries, for up to approximately 26.9kWh.
What is the maximum system size for each?
Anker specifies up to 12kW output and 53.8kWh with two F3800 units. BLUETTI supports larger multi-unit Apex 300 configurations and B500K battery options; check current BLUETTI documentation for the configuration you intend to build.
Can the F3800 charge an EV?
Anker specifically supports EV charging through the F3800's NEMA 14-50 connection at up to 6,000W / 240V. Range added depends on the vehicle, charging efficiency and available battery capacity — a 3.84kWh station will not fully charge a long-range EV.
Can the Apex 300 power 240V appliances?
Yes, it supports 120V/240V output through its supported connections and configurations. Verify the outlet type required by your specific appliance before buying.
Are both LiFePO₄?
Yes. BLUETTI rates the Apex 300 at 6,000+ cycles to 80% capacity, while Anker rates the F3800 at 3,000+ cycles. Cycle ratings are design targets, not calendar-lifespan predictions.
Which should I buy for home backup?
Start from your required loads rather than the brand. If you need higher standalone AC output and more capacity immediately, the F3800 is specified higher in both areas. If lower weight, compact size, fast UPS behaviour and modular growth matter more, the Apex 300 offers a different set of advantages.
Did WattPick Lab test these power stations?
No. This is a research-based comparison using manufacturer documentation and labelled calculations. We have not measured usable capacity, charging speed, noise or long-term reliability.
Sources & editorial method
Research checked September 24, 2026. This page covers the US versions of both models. Specifications come from official manufacturer documentation; every estimate is labelled as such. Expansion and maximum-configuration figures are manufacturer claims for specific hardware combinations and are not guaranteed results.
- BLUETTI Apex 300 product page ↗ — base capacity, rated output, 120V/240V support, solar input, expansion options and weight.
- Anker SOLIX F3800 product page ↗ — capacity, 6,000W output, NEMA connections, solar input, expansion configurations and weight.
We have not published measured usable-energy, noise or reliability figures for either model. Merchant prices, sales counts and customer ratings are not treated as our test evidence. Live offers and bundle contents should be checked at the retailer.