BLUETTI
B500K for Apex 300
Apex 300 owners can extend their system with this high-capacity pack. This is the B500K expansion battery in the Apex 300 version, which BLUETTI rates at 5,120Wh.
$1,600.00
BLUETTI B300S Expansion Battery | 3,072Wh
$1,439.20
In stockShips from Baton Rouge, LA30-day warrantyFrom delivery, on eligible productsFree shippingProcessing 1 business day after payment; delivery about 2–7 business days after dispatch
Shipping & delivery30-day returnsWarranty
Check local voltage, plug, installation, and product-certification requirements before ordering. We confirm compatibility and availability for your destination before payment.
Overview
The B300S is a 3,072Wh LiFePO4 expansion battery built for large BLUETTI systems, and it also works as a standalone power station. Paired with the AC500, it scales to very large home backup capacities.
Planning a system? Read our guide: How to size a battery backup system for your home.
Key benefits
- Over 3,500 life cycles make it a long-term storage investment.
- The Temperature Adaptive Function keeps it responsive on freezing days.
- It can scale to 36,864Wh when combined with the AC500.
Key features
- 3,072Wh LiFePO4 battery with over 3,500 life cycles
- 100W USB-C, 12V/10A car port and USB-A port
- Charges from AC, solar and car power
- Temperature Adaptive Function for cold conditions
- Compatible with the AC500 for up to 36,864Wh (2x AC500 + 12x B300S)
Ideal use
Large home backup systems built on the AC500, especially in colder climates.
Key specifications
- Model / SKU
- B300S-UN-GY-BL-SPFUS
- Brand
- BLUETTI
- Category
- Batteries
- Voltage
- 12V
- Rated power
- 100 W
- Energy capacity
- 3,072 Wh
From the manufacturer
3,072Wh LiFePO4 battery for over 3,500 life cycles. Standalone power station with 100W USB-C, 12V/10A car port and USB-A port. Flexible charging via AC, solar and car power sources. Responsive even in freezing days with Temperature Adaptive Function. Compatible with AC500 for a maximum of 36,864Wh capacity. (2*AC500+12*B300S)
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
Before you order
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Talk to our team about how many B300S units your AC500 system needs. Message our team on WhatsApp.
More in batteries
BLUETTI
B500K for AC500
For AC500 systems that need a big step up in storage, BLUETTI offers this battery. This is the B500K expansion battery in the AC500 version, which BLUETTI rates at 5,120Wh.
$1,639.20
BLUETTI
BLUETTI AC300+B300K+200W Solar | Home Battery Backup
This home backup bundle pairs the BLUETTI AC300 with a B300K battery and 200W of solar. It suits homeowners who want a modular battery system they can recharge from the sun and grow over time.
$1,678.40
BLUETTI
B300K for AC200L/AC300
Adding storage to an AC200L or AC300 is what this battery is for. It is the B300K expansion battery in the version listed for the AC200L/AC300, rated by BLUETTI at 2,764.8Wh.
$1,199.20