BLUETTI B300S Expansion Battery | 3072Wh ( Only Works With AC500 ), B300S | 3072Wh Expansion Battery / Battery Only

Extend your Bluetti AC500 energy reserves with the B300S Expansion Battery. Delivering a hefty 3072Wh of storage, this battery module plugs directly into the AC500 system to massively increase runtime for home backup, off-grid living, or travel. As a battery-only expansion, it pairs with the AC500 but doesn't include inverter hardware, so you scale energy storage without duplicating components. Built on reliable LiFePO4 chemistry, the B300S offers long cycle life and stable performance across daily use and emergencies. Use it to power essential appliances during outages, run power-hungry devices for longer, or create modular energy storage that grows with your needs. Easy to connect, compact, and safety-protected, it's a practical upgrade for extended power resilience when you already own an AC500.