BLUETTI AC300+B300K | Home Battery Backup
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- 3,000W AC Output: Power most appliances effortlessly.
- Split Phase Bonding: Achieve 240V output for heavy-duty devices.
- Expandable Capacity: Tailor your energy storage up to 22,118.4Wh.
- LiFePO₄ Battery: Reliable performance for over 10 years.
- 24/7 UPS: Uninterrupted power during unexpected outages.
- 2,400W Max. Solar Input: Harness abundant and sustainable solar energy.
- 5,400W Max. Dual Charging: Ensure power is ready in no time.
- 7 Ways to Recharge: Charge at your preference.
- 4-Year Warranty: Enjoy peace of mind with dedicated service.
Product Model:
1. Valid purchase history within 30 days.
2. Take a screenshot of the lower price and email us, we'll refund the differences as soon as we confirmed it.
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Why Choose BLUETTI AC300?

Charge Your Power, Your Way
From the Wall:The 30A AC charging cable allows a maximum input of 3,000W, fully refilling AC300 + B300K in just 1.5 hours.
From the Sun:AC300 + B300K supports up to 2,400W solar* input, meaning that you can replenish this combo in 1.8-2.3 hours. * D300S is required for roof panel charging.
From Dual AC:With an extra T500*, AC300 + B300K is capable of 2,300W input, reaching 100% capacity in just 1.8 hours. * Sold separately.
From the Sun & Wall:Plug in the adapter and solar panels for up to 3,000W input, so you can also top up the AC300 + B300K for about 1.5 hours.
Whole-Home Backup
Superpower for Heavy-duty Work
Maximize Savings with Peak-Load Shifting
Instant Backup Protection, Consistent Home Comfort
Power in Hand - App Control

Other Top Rated Products
PREVIEW
OUTPUT
INPUT
GENERAL
IN THE BOX
FAQS
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Q1: Overview of AC300 & B300K.
A:AC300 | Power Station Tutorial: Learn More
B300K | Expansion Battery Tutorial: Learn More
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Q2: What can I do with the touchscreen?
A:Check the AC300 touchscreen guide for details: Learn More -
Q3: What cables come with the AC300 + B300K combo, and how long are they?
Standard:
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AC300
- 15A AC Charging Cable: 59in/150cm
- DC Input Cable: 59in/150cm
- Car Charging Cable: 19.7in/50cm
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B300K
- P090D Battery Expansion Cable: 31.5in/80cm
Optional:
- 30A AC Charging Cable: 59in/150cm
- Lead-acid Battery Charging Cable: 19.7in/50cm
- 12V/30A RV Cable Kit: 31.5in+19.7in/80cm+50cm
- P150D to P090D Cable: 31.5in/80cm
- AC Parallel Cable: 59in/150cm
- Cigarette Lighter (24V) to DC5521 Cable: 28.3in/72cm
- Split-phase Charging Cable: 59in/150cm
- Split-phase Output Cable: 78.7in/200cm
- USB-C to USB-C Cable: 78.7in/200cm
Note:
- All measurements are for reference only.
- Package details are subject to change without prior notice.
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AC300
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Q4: Can the AC300 be used alone?
A:No, the AC300 has no built-in battery. Please use it with the B300 or B300K battery.
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Q5: Is the AC300 compatible with batteries from other brands?
A:The AC300 is compatible with B300 or B300K ONLY.
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Q6: What cables are required to connect the AC300 to the B300K or B300?
Battery Expansion Cable (P090A).
Check the AC300 Battery Expansion guide for details: learn more
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Q7: How many B300/B300K batteries can I connect to the AC300? Can I mix them?
A:You can connect up to 4 B300 or B300K batteries to the AC300, and they can be mixed. -
Q8: What is the UPS switching latency?
A:20ms from offline UPS. -
Q9: Where can I buy the solar extension cable? Will it affect the solar input power?
A:You can purchase it on other platforms. We highly recommend 10 AWG or 12 AWG cables. Keep in mind that the longer the cable, the greater the power loss in the solar input. -
Q10: How to install the AC300 + B300K system for home backup?
A:Check the instructions for details: instructions -
Q11: 1) How many solar panels can be connected to AC300 + B300K? 2) How to connect them? 3) Can the solar input current exceed 12A? 4) Can the solar input power exceed 2,400W?
1) The AC300 supports dual MPPT, with each MPPT able to connect:
- 1 to 6 PV120 panels,
- 1 to 5 PV200 panels,
- 1 to 3 PV350 panels,
- 1 to 3 PV420 panels.
2) Series connecting is highly recommended for the best efficiency and durability. Avoid mixing different types of solar panels in the same circuit to ensure optimal efficiency and prevent potential damage.
3) Yes, but the extra current will be wasted.
4) Yes, however, please ensure the total voltage does not exceed 150V.
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Q12: Does AC300 have a UPS function?
UPS Modes
- Standard UPS - Recommended for areas with unstable grid power.
- Time Control UPS - Set it to charge during off-peak hours and power your loads during peak times. Suitable for areas with fluctuating electricity prices based on time-of-use.
- PV Priority UPS - Uses solar power first, ideal for sunny regions.
- Customized UPS - Flexible to fit your specific energy needs.
How-to
A useful guide to making the most of it all.

BLUETTI AC300 & B300K Review
