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The BLUETTI B300S Expansion Battery is a high-capacity energy storage solution designed to expand the power capabilities of the AC500 and AC300 power stations. With a 3,072Wh capacity and advanced LiFePO4 battery technology, the B300S delivers reliable, long-lasting performance for off-grid living, emergency backup, and eco-friendly energy solutions. Its modular design makes it easy to customize your power system for any application, big or small.
3,072Wh High-Capacity Energy Storage
Store sufficient energy for extended outages or off-grid adventures. Perfect for powering appliances, devices, and tools when paired with BLUETTI power stations.
Advanced LiFePO4 Battery Technology
Built with reliable LiFePO4 cells for 3,500+ charge cycles, ensuring long-term durability and eco-friendliness.
Fast Recharging Options
Compatible with AC, solar, and car charging for flexible and efficient power replenishment.
Seamless Integration with BLUETTI Power Stations
Designed to expand the capacity of AC500 and AC300 systems, offering scalable energy solutions tailored to your needs.
Built-In Smart Features
Includes a status display for real-time monitoring of battery levels, input/output, and charging status.
Reliable Backup Power for Homes
Extend runtime during power outages, ensuring critical devices like refrigerators and medical equipment remain operational.
Off-Grid Living and RV Adventures
Power your off-grid home or RV setup, storing enough energy for lighting, cooking, and entertainment.
Expandable Energy Solutions for Businesses
Ideal for small businesses or workshops requiring backup or supplemental power for tools and equipment.
Emergency Preparedness
Stay ready for unexpected disasters with a dependable energy source that ensures seamless power continuity.
Everything you need is included with your product.
| Specification | Details |
| Capacity | 3,072Wh (51.2V, 60Ah) |
| Cell Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Life Cycles | 3,500+ Cycles to 80% Original Capacity |
| Shelf-life | Recharge to 80% Every 3-6 Months |
| Management System | MPPT Charge Controller, BMS, etc. |
| 240V Split Phase Bonding | Yes, Works with AC500 |
| Simultaneous Recharge & Discharge | Yes |
| Weight | 83.8lbs (38kg) |
| Dimensions (LxWxD) | 20.5 x 12.5 x 10.5in (52 x 32 x 26.6cm) |
| Operating Temperature | -4℉-104℉ (-20℃-40℃) |
| Storage Temperature | -4℉-104℉ (-20℃-40℃) |
| Certification | UL2743, UKCA, RCM, PSE, FCC, CE |
| Specification | Details |
| AC Input | 500W Max. |
| Solar Input | 500W Max., VOC 12-60VDC, 10A |
| Car Input | 12/24V from Cigarette Lighter Port |
| Maximum Input | 1,000W, with D050S DC Charging Enhancer |
| Specification | Details |
| USB-C Port | 1 x 100W Max. |
| USB-A Port | 1 x 18W |
| DC Outlets | 1 x 12V/10A (Car Outlet) *All regulated. |
What BLUETTI power stations are compatible with the B300S?
The B300S is designed to pair seamlessly with the AC500 and AC300 systems, allowing for flexible energy expansion.
Can I use the B300S as a standalone battery?
The B300S requires a BLUETTI power station for full functionality but can serve as a passive battery when connected.
How long does it take to charge the B300S?
Charging times vary depending on the input source. With a 500W solar panel setup under optimal conditions, the B300S can fully charge in approximately 6–7 hours.
How many B300S packs can be connected to the AC500?
Up to 6 packs.
Can B300S and B300 be mixed in an AC500 system?
Yes, a total of 4 packs in any combination.
Does the B300S support app control?
Yes, when connected to the AC500 and paired with the BLUETTI app.
What is the maximum input charging power of the B300S?
1,000W with the optional D050S DC Charging Enhancer (sold separately).
Can third-party solar panels charge the B300S?
Yes, if they meet these specs:
Can it charge and discharge simultaneously?
Yes.
Is the B300S waterproof?
No.
What’s the difference between B300S and B300?
I am always hesitant to buy things at places. I have never shopped, but I thank God that I ran into this store. I want to give a shout out to Manny who with great patience and knowledge helped me get my orders. They are very knowledgeable about their equipment that they sell. They are very compassionate for their customers. I felt valued as a customer and I will definitely be back in the future. I highly recommend them, they make you feel like family.
The You tube video very helpful and it is working great
Still seeking someone to wire it.
