BLUETTI · Batteries
BLUETTI B300 Expansion Battery (3072 Wh)
$899.19Works with
AC300 / AC200MAX / AC500 (cable by model)
3,072 Wh LiFePO4 expansion battery (3,500+ cycles) with built-in 200W MPPT solar input and standalone 100W USB-C, 18W USB-A, and 12V/10A car outputs. Includes P090A expansion cable and MC4-to-XT90 solar cable.
Use
What it adds
The BLUETTI B300 Expansion Battery adds 3,072 Wh of LiFePO4 storage per module to modular BLUETTI systems including the AC500 (via P090D to P150D cable), AC300 (up to four B300 units for 12,288 Wh), and AC200MAX (up to two units for 8,192 Wh).
In addition to expanding your main inverter, the B300 features a built-in 200W MPPT solar controller and standalone 100W USB-C, 18W USB-A, and 12V/10A DC outputs—so it can charge from solar panels and power DC appliances completely on its own.
Compatibility
Product details
- Brand
- BLUETTI
- Category
- Batteries
- Compatible with
- AC300 / AC200MAX / AC500 (cable by model)
- Weight
- 79.6 lb / 36.1 kg
- Dimensions
- 20.5 × 12.5 × 10.5 in (520 × 320 × 266 mm)
- Model
- B300
- Capacity
- 3,072 Wh (51.2V, 60Ah)
- Cell chemistry
- LiFePO4 (LFP)
- Cycle life
- 3,500+ cycles to 80% capacity
- Built-in MPPT solar input
- 200W Max (12V–60V DC, 10A Max)
- Standalone DC outputs
- 1 × USB-C (100W), 1 × USB-A (18W), 1 × 12V/10A Car Port
- Charge temperature
- 0°C to 40°C (32°F to 104°F)
- Discharge temperature
- -20°C to 40°C (-4°F to 104°F)
In action
Reference setups & real-world use
AC300 Modular Home & Cabin Inverter Stack
Two BLUETTI B300 (3,072 Wh) modules connected to a BLUETTI AC300 via P090A cables, featuring built-in front 100W USB-C, 18W USB-A, and 12V/10A car outputs.
Standalone DC Hub & 200W MPPT Solar Charging
Operates independently at camp using its built-in 200W MPPT solar input while powering a 12V fridge and laptop directly from its front DC ports.
Highlights
Why it's worth it
- 3,072 Wh (51.2V, 60Ah) LiFePO4 battery module rated for 3,500+ cycles to 80% capacity
- Built-in 200W MPPT solar input lets you charge the battery directly from MC4 solar panels (12V–60V DC)
- Standalone DC power station outputs: 100W USB-C PD, 18W USB-A, and 12V/10A regulated car socket
- Supports up to 500W AC charging (via optional T500 adapter) or combined 700W AC + solar input
- Compatible with BLUETTI AC500 (requires P090D→P150D cable), AC300, and AC200MAX
In the box
What's included
- BLUETTI B300 Expansion Battery (3,072 Wh)
- P090A Battery Expansion Cable
- Solar Charging Cable (MC4 to XT90)
- User Manual
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