Power Expansion for Every Situation The B300K adapts to your life, whether you're safeguarding your home during outages or powering an off-grid adventure. Stack multiple B300K batteries, or mix and match with B300, and B300S models for a customized energy solution that ensures you're never caught without power, no matter where you are. *Need P150D to P090D cable to connect the AC500. AC300 + B300K: The B300K adapts to your life, whether you're safeguarding your home during outages or powering an off-grid adventure. Stack multiple B300K batteries, or mix and match with B300 for a customized energy solution that ensures you're never caught without power, no matter where you are. AC500 + B300K: The B300K adapts to your life, whether you're safeguarding your home during outages or powering an off-grid adventure. Stack multiple B300K batteries, or mix and match with B300 or B300S for a customized energy solution that ensures you're never caught without power, no matter where you are. AC200L + B300K: The B300K adapts to your life, whether you're safeguarding your home during outages or powering an off-grid adventure. Stack multiple B300K batteries, or mix and match with B300 for a customized energy solution that ensures you're never caught without power, no matter where you are. Great Compatibility for More Possibilities The B300K seamlessly integrates with AC200L, AC200MAX, AC300, and AC500* power stations, giving you the flexibility to scale your energy setup as your needs grow. Whether you're prepping for more power at home or gearing up for your next adventure, the B300K has you covered. * A P090D to P150D cable is required for connecting with AC500 and sold separately. Built to Protect, Designed to Last The B300K is designed to excel in safety and reliability. Featuring square LiFePO4 batteries and cutting-edge AI-BMS technology, together with a robust aluminum casing, advanced wireless components, and efficient cooling fan ensure this battery stands the test of time, giving you a power source you can count on in any situation. Fast Charging Comes in Handy When paired with the AC300 or AC500, this battery charges up to 80% in just 45 minutes, so you can get back to what matters without any significant interruption, your work, activities, or emergencies ...whether you're at home or on the go. A Standalone Power Source, A Standout Performance The B300K isn't just an add-on; it's also a versatile power hub. With a USB-A port, it's perfect for keeping your essentials like smartphones, tablets, or fans charged, whether you're ready to make an urgent call or message, eager to share beautiful moments with your friends, or try to stay cool while camping in a tent. Power is always within reach, wherever life takes you. BATTERY INFO Model: B300K Battery Capacity: 2,764.8Wh (51.2V, 54Ah) Battery Type: LiFePO4 (Lithium Iron Phosphate) Life Cycles: 4,000+ Cycles to 80% Original Capacity OUTPUT USB-A: 12W Max., 5V / 2.4A GENERAL Net Weight: Approx. 29.5kg (65.04lbs) Dimensions (L × W × H): 525 × 327 × 209mm (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. 2 × Expansion Port: 58.4VDC Max., 90A Max.