Bluetti AC300+B300K | Home Battery Backup
The Bluetti AC300 Battery Backup is revolutionizing energy storage solutions for modern homes. This advanced system provides reliable backup power, making it an essential investment for households looking to maintain their electrical needs during outages or emergencies.
Key Features of the Bluetti AC300 Battery Backup
This state-of-the-art battery backup system boasts features that set it apart from traditional solutions. One of the standout elements is its expandable capacity, allowing users to customize the battery bank according to their specific energy requirements. The Bluetti AC300 can accommodate multiple battery modules, ensuring you have enough power for all your devices.
Additionally, the AC300 B300K comes equipped with a range of powerful ports, including regular AC outlets, USB ports, and even a DC output, making it versatile for numerous applications—from powering home appliances to charging your electronics.

- Whole-Home Backup – With the AC300 system integrated into your home, you’ll have tons of energy to power your day-to-day living smoothly. From necessary appliances to critical devices like EV chargers, enjoy a steady and dependable energy flow that always has your back, no matter what.
- Charge Your Power
- 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.
- Superpower for Heavy-duty Work – Combine 2 AC300 units in parallel via a P030A fusion box, and you can run your 240V energy-intensive appliances effortlessly, like heaters, heat pumps, air conditioners, etc.
- Maximize Savings with Peak-Load Shifting – Store energy during off-peak hours when prices are low, and use it when prices spike. This smart energy management not only reduces your utility bills but also ensures you have affordable power available when you need it most.
- Instant Backup Protection – When the power goes out, the EPS kicks in within just 20ms, ensuring your home and all essentials remain powered smoothly. Now, you don’t have to fumble around in the dark!
- App Control – Whether you’re indoors or out, the intuitive app lets you gain insights into real-time power consumption, adjust operation modes, and even access firmware updates with just a few taps.
Bluetti AC300 B300K Specifications
1. Bluetti AC300

| OUTPUT | INPUT | ||
|---|---|---|---|
| AC Outlets | 6 x 120V/20A Outlets 1 x 120V/30A TT-30 3,000W In Total | AC Input | 3,000W Max. |
| Inverter Type | Pure Sine Wave | Solar Input | 2,400W Max., VOC 12-150VDC, 12A (200W x 2, 12-150VDC, 12A x 2) |
| Surge Power | 6,000W | Car Input | 12 / 24V from Cigarette Lighter Port |
| USB-C Port | 1 x 100W Max | Maximum Input | 5,400W, with AC and Solar Input Simultaneously |
| USB-A Port | 2 x 5V/3A USB-A 2 x 18W USB-A | ||
| 12V* DC Outlets | 1 x 12V/30A (RV Outlet) 1 x 24V/10A (Car Outlet) *All Regulated. | ||
| Wireless Charging Pad | 2 x 15W Max. (For Each) | ||
| GENERAL | |
|---|---|
| 240V Split Phase Bonding Yes. Compatible with 2-8 x B300K | App Control Via WiFi & Bluetooth |
| Scalability Expandable w/Up to 4 x B300K | Pass-through Charging Yes |
| Weight 47.6lbs / 21.6kg | Dimensions (L × W × H) 20.5 x 12.5 x 14.1in / 52 x 32 x 35.80cm |
| Discharging Temperature -4℉ to 104℉ / -20℃ to 40℃ | Charging Temperature 32°F to 104°F/0°C to 40°C |
| Storage Temperature -4℉ to 104℉ / -20℃ to 40℃ | Certification FCC, UL, TELEC, CE, NTC, RCM, LOA ICASA |
2. Bluetti B300K Battery

| BATTERY INFO | OUTPUT | ||
|---|---|---|---|
| Model | B300K | USB-A Port | 12W Max., 5V / 2.4A |
| Battery Type | LiFePO₄ (Lithium Iron Phosphate) | Capacity | 2,764.8Wh |
| Battery Capacity | 2,764.8Wh (51.2V, 54Ah) | ||
| Cycle Life | 4,000+ (80%) | ||
| GENERAL | |||
| Weight | 29.5kg (65.04lbs) | Dimensions (L × W × H) | 52.5 × 32.7 × 20.9cm (20.67 × 12.87 × 8.23in) |
| Charging Temperature | 0°C to 40°C (32°F to 104°F) | Discharging Temperature | -20°C to 40°C (-4°F to 104°F) |
| Storage Temperature | Up to 1 month: -20°C to 40°C (-4°F to 104°F) Up to 6 months: -20°C to 25°C (-4°F to 77°F) | Working Humidity | 5% to 95%RH |
| Charging Current | 60A Max. (Current may decrease outside specified temperatures) | Discharging Current | 70A Max. |
Benefits of Using a Home Battery Backup
Having a home battery backup like the Bluetti AC300 B300K ensures peace of mind during unexpected power outages. It not only allows you to continue using essential appliances but also helps you save on energy costs in the long run. With solar compatibility, users can harness renewable energy, bridging sustainability and reliability.

In conclusion, the Bluetti AC300 B300K home battery backup is a robust solution for anyone seeking reliable power storage. Its innovative features and numerous benefits make it an ideal choice for any household aiming to enhance energy independence and reliability.
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