Bluetti AC300: Specs, Price, and How It Actually Compares
Here's something most buyers don't realize until they've already added the AC300 to their cart: it's not a power station on its own. It's an inverter with no battery built in at all, and it does nothing until you pair it with at least one B300-series battery module, sold separately. This guide walks through the AC300's full specs and real-world pricing, what its home integration kit adds for whole-home backup, and how a fully built-out AC300 setup actually stacks up against an all-in-one unit like the EcoFlow DELTA Pro.
Bluetti AC300 Specs
Since the AC300 has no battery of its own, its specs only tell half the story until you know how many modules you're pairing with it. Here's what the numbers look like with one B300K attached, the current pairing Bluetti ships it with.
Spec | Bluetti AC300 (with B300K) |
AC output | 3,000W continuous |
Surge output | ~6,000W |
Battery (sold separately) | B300K, 2,764.8Wh per module, up to 4 modules |
Max capacity (4 modules) | ~11,059Wh |
Solar input | Up to 2,400W (dual 1,200W ports) |
AC charging | Up to 3,000W input, about 1.1 hours to full |
Weight (AC300 unit only) | 47.6 lbs |
Dimensions | 20.5 x 12.5 x 14.1 in |
Warranty | 4 years |
A few things worth flagging before you shop:
Because there's no built-in battery, a buyer who only picks up the inverter has zero watt-hours of usable storage. The "capacity" only exists once you've bought battery modules to go with it.
A 2,400W solar input is on the high end for this power class, which matters if you're actually trying to recharge off panels rather than a wall outlet. Worth weighing that number against a portable power station's typical specs before assuming faster input always means faster real-world charging.
The 4-year warranty runs shorter than the 5-year terms you'll see on most comparable all-in-one units, which is worth factoring in if you're planning to keep this thing running for a decade.
Backup power in general has gotten a lot more attention lately, and it's not hard to see why. Hurricanes drove US customers to their longest stretch without power in a decade during 2024, according to the Energy Information Administration. That kind of outage risk is exactly why modular systems that let you scale up storage over time, instead of committing to one fixed size, have found a real audience.
Because the AC300 is sold in pieces, what it actually costs depends entirely on how you build it out. That's worth breaking down before comparing it to anything else.
Bluetti AC300 Price and What's Actually Included
The sticker price you see in a search result almost never matches what you'll actually pay. Here's what a real AC300 setup runs.
A base bundle, the AC300 inverter plus one B300K battery, has typically run around $2,299. Pricing and battery pairing have shifted more than once as Bluetti's lineup has changed, so a current listing is a far more reliable check than anything cached in an old review.
The dedicated Home Integration Kit is what unlocks whole-home backup. A $310 version supports 120V output, while a $659 version adds 240V split-phase output, but only once you've paired two AC300 units with at least two battery modules.
Total cost climbs fast once you add battery modules, the integration kit, and any solar panels on top. It's worth comparing that full number against an all-in-one unit's total price, not just the AC300's base inverter cost.
If you're starting with just one battery and thinking about adding a second down the road, the math for expanding your battery storage later is a useful gut check before deciding whether to buy modules now or wait.
Home battery storage capacity in the US grew by an average of 70% a year over the last three years, per the Energy Information Administration, and a lot of that growth has come from homeowners scaling up gradually the same way an AC300 setup lets them do. Here's a rough sense of what that scaling actually costs:
Configuration | Approximate cost |
AC300 + 1 B300K | ~$2,299 |
AC300 + 2 B300K modules | ~$4,000-$4,500 |
AC300 + Home Integration Kit (120V) | ~$2,600-$2,900 |
Two AC300 units + 2 modules + 240V kit | ~$6,500 and up |
With the real, fully configured cost on the table, it's worth seeing how that compares to a single-unit alternative built around a completely different design.
Bluetti AC300 vs EcoFlow DELTA Pro
The AC300 and the DELTA Pro solve the same basic problem in almost opposite ways. One asks you to build the system piece by piece.
Spec | Bluetti AC300 (+1 B300K) | EcoFlow DELTA Pro |
Capacity | 2,764.8Wh (per module, modular) | 3,600Wh (built-in) |
AC output | 3,000W | 3,600W |
Surge output | ~6,000W | 7,200W |
Solar input | 2,400W | 1,600W |
Weight (base unit) | 47.6 lbs | 99.2 lbs |
Warranty | 4 years | 5 years |
Design | Modular, battery sold separately | All-in-one, battery included |
Starting price | ~$2,299 (inverter + 1 battery) | ~$2,799 list (frequent sales) |
A few things stand out here:
DELTA Pro comes with its battery included and edges out the AC300 setup on continuous output, surge power, and warranty length, all without requiring a separate purchase to get there.
The AC300's modular design and higher solar input are its clearest strengths. You can size the battery to your actual needs and recharge faster if you've got a large panel array to feed it.
Because DELTA Pro's 3,600Wh capacity is built in from the start, there's no separate inverter-and-battery pairing to figure out. The way each unit actually distributes power to your circuits comes down to how inverter and battery pair, a distinction that matters more once you're wiring either system into a breaker panel.
When deciding on your home backup system, choosing between all-in-one efficiency and modular scaling depends on how much power you need and how simple you want the setup to be. If you need more power and native high-voltage output, the EcoFlow DELTA Pro 3 is also a wise option for running major home appliances without adding complex installation components.
Beyond the spec sheet, it helps to understand what the modular design actually buys you once you're talking about whole-home backup specifically.
What the Home Integration Kit Adds for Whole-Home Backup
The Home Integration Kit is what turns a portable AC300 setup into something that can actually back up part of your house. Here's how it works and where its limits are.
The kit ties the AC300 system into your home's main panel through a sub panel with a 30A inlet and outlet, rather than giving you circuit-by-circuit control the way some whole-home systems do. It's a simpler connection, but a less granular one.
Think of it less like a whole-house transfer switch and more like a heavy-duty extension of the AC300's own outlets, wired directly into your panel. That's genuinely useful for keeping a handful of essential circuits alive during a blackout. It's not the same thing as backing up your entire home the way a purpose-built whole-home battery system is designed to do from the ground up.
The 240V version needs two full AC300 units and at least two battery modules just to unlock split-phase output, which is a meaningfully higher entry cost than most single-unit whole-home setups.
This step-up-as-needed approach fits homeowners who want to start small and grow into more capacity over time. But it does add real cost and complexity that a single-unit system usually skips.
For readers weighing that tradeoff, it helps to understand the different backup system types before deciding whether a modular build-your-own approach or a more turnkey option fits your home better.
Conclusion
The Bluetti AC300 is a modular inverter that needs separately purchased B300-series batteries to actually work, with a home integration kit available if you want whole-home backup. The EcoFlow DELTA Pro offers comparable or higher output with its battery built in from day one, usually at a lower fully configured cost. Price out a complete AC300 setup before comparing it to DELTA Pro's base price. It's worth a look if a simpler, all-in-one system fits what you actually need.
FAQs
What are the full specs of the Bluetti AC300?
Paired with one B300K module, it delivers 3,000W continuous output, about 6,000W of surge power, 2,764.8Wh of capacity, and up to 2,400W of solar input. It carries a 4-year warranty and weighs 47.6 lbs on its own, not counting battery modules.
How much does the Bluetti AC300 cost, fully set up?
A base bundle with one battery module runs around $2,299. Add a Home Integration Kit for whole-home backup and you're looking at another $310 to $659, plus more if you need a second unit for 240V output. A fully built-out system can easily clear $6,500.
What does the Bluetti AC300 home integration kit do?
It connects the AC300 setup to your home's main panel through a 30A sub panel, giving you backup power for part of your house rather than individual circuit control. The 240V version requires two AC300 units and at least two battery modules.
Is the Bluetti AC300 still available to buy new?
The original B300 battery has been discontinued, but Bluetti currently sells the AC300 paired with the newer B300K module. Always check a current listing rather than an older review, since pricing and battery pairings have shifted more than once.
How does the Bluetti AC300 compare to the EcoFlow DELTA Pro?
DELTA Pro comes with its 3,600Wh battery built in and outperforms a comparably sized AC300 setup on output and warranty length, without needing a separate battery purchase. The AC300's advantage is its modularity and higher solar input for buyers who want to size their own capacity, though getting to that higher solar ceiling means paying for the extra modules that unlock it.
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