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Bluetti AC500 + B300S review: buy or skip?

Consider8.0/10 research score

Quick answer

Consider it, if you want modular expansion. Why: modular system with separate inverter and batteries. The catch: complex.

By Buyrskip Editorial Team Updated 1 min read

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Bluetti AC500 + B300S

Our verdict on the Bluetti AC500 + B300S

Buy it if
you want modular expansion.
Skip it if
you want a single box.
Best for
Modular
Key feature
Modular system with separate inverter and batteries
Typical price
$2,999–$3,799
Check Price on Amazon Paid link

Key specifications

Capacity3,072 Wh (with one B300S)
Output5,000 W
Expandable to18.4 kWh
BatteryLiFePO4

Who should buy it, and who should skip it

A good fit if you

  • you want modular expansion
  • value modular
  • can spend around $2,999–$3,799

Skip it if you

  • you want a single box
  • mind this: complex
  • mind this: heavy

Pros and cons

Pros

  • Modular
  • 5,000 W
  • Expandable
  • Solar input

Cons

  • Complex
  • Heavy

The verdict in one breath

The Bluetti AC500 + B300S is a good home backup battery for the right buyer, not an automatic pick. Its strength: modular system with separate inverter and batteries. Check the skip-if line before you order.

Reasons to buy

  • Modular
  • 5,000 W
  • Expandable
  • Solar input

Reasons to skip

  • Complex
  • Heavy

The specs that matter

  • Capacity: 3,072 Wh (with one B300S)
  • Output: 5,000 W
  • Expandable to: 18.4 kWh
  • Battery: LiFePO4

Worth knowing

Separate pieces make moving easier.

Buy it or skip it?

Consider it if you want modular expansion. Skip it if you want a single box; the EcoFlow DELTA Pro 3 is the better buy then. Everything else is in our list of the best home backup batteries.

Alternatives worth considering

EcoFlow DELTA Pro 3

EcoFlow · Home backup batteries

EcoFlow DELTA Pro 3

Buy it if you want backup for well pumps and big appliances.

Verdict
Buy
Best for
Whole-home ready
Typical price
$2,999–$3,999

Pros

  • 240 V output
  • Expandable to 48 kWh

Cons

  • Heavy
Check Price on Amazon Paid linkRead our review
Anker SOLIX F3800 Plus

Anker · Home backup batteries

Anker SOLIX F3800 Plus

Buy it if you want strong home backup with expansion.

Verdict
Buy
Best for
Home backup
Typical price
$2,999–$3,999

Pros

  • 6,000 W output
  • 240 V

Cons

  • Heavy
Check Price on Amazon Paid linkRead our review

Frequently asked questions

Should I buy the Bluetti AC500 + B300S?

Consider it, if you want modular expansion. Why: modular system with separate inverter and batteries. The catch: complex.

When should I skip it?

Skip it if you want a single box. The EcoFlow DELTA Pro 3 is the better buy then.

What does the Bluetti AC500 + B300S cost?

Usually $2,999–$3,799 on Amazon.com. It tends to dip during Prime Day and Black Friday.

Buyrskip Editorial Team

Part of the Buyrskip research team. We compare specifications, documentation and real-world trade-offs so you can decide faster.

How we research products Editorial policy

Bluetti AC500 + B300S: the full buy-or-skip review

Is the Bluetti AC500 + B300S worth buying? Short answer: consider it, if you want modular expansion. This review explains what this Bluetti model gets right, where it falls short, what it usually costs in the US and which home backup battery to buy instead if it is not the right fit for you.

What the Bluetti AC500 + B300S does well

The headline: modular system with separate inverter and batteries. Key specs: Capacity: 3,072 Wh (with one B300S); Output: 5,000 W; Expandable to: 18.4 kWh; Battery: LiFePO4. In our list it is the pick for: modular. It usually sells for $2,999–$3,799.

Separate pieces make moving easier.

The trade-offs

Good: modular, 5,000 W, expandable, solar input. Not so good: complex, heavy. Read the skip-if line before you order: skip it if you want a single box.

What to buy instead

Instead, consider the EcoFlow DELTA Pro 3 ($2,999–$3,999): 4 kWh expandable station with 240 V output. Better if you want backup for well pumps and big appliances.

Instead, consider the Anker SOLIX F3800 Plus ($2,999–$3,999): 3.84 kWh station with 6 kW output and 240 V. Better if you want strong home backup with expansion.

Instead, consider the Anker SOLIX F3800 ($2,499–$3,299): 3.84 kWh station with 240 V. Better if you want 240 V backup for less than the Plus.

Before you buy

Output: 3,000 W or more (and 240 V on some models) is needed for well pumps, sump pumps and central air. Expansion: extra battery packs let you grow from 3–4 kWh to 10+ kWh as needs change. Connection: a transfer switch or smart panel, installed by an electrician, lets the battery power home circuits safely.

US buyer tip

Battery storage may qualify for the federal residential clean energy tax credit when installed as part of a home system; check current rules with a tax professional before you buy.

Prices on Amazon.com move in a pattern. The deepest cuts land on Prime Day in July, Prime Big Deal Days in October and the Black Friday to Cyber Monday week, with smaller drops around Presidents Day, Memorial Day, the Fourth of July and back-to-school. Judge a deal against the usual price we show, never against the crossed-out list price.

Order from Amazon itself or the brand's official storefront so the US manufacturer warranty applies, keep your order confirmation and register the product with the brand. Most items can be returned within 30 days, and holiday purchases often get an extended return window into January.