The Anker SOLIX BP1000 Expansion Battery offers a 1,056Wh LFP battery that works seamlessly with the SOLIX C1000. It boasts an ultra-compact and durable design, with 3,000 life cycles and a 10-year lifespan, backed by a 5-year warranty. This expansion battery doubles the Anker SOLIX C1000 capacity to 2112Wh and can be fully recharged in under 2 hours via AC. It is 25% smaller, making it easier to carry for outdoor power needs. The battery ensures safe charging with a 3-Point Safe Charging Clasp. The package includes the expansion battery, a battery-to-host cable, a digital manual, and a digital 5-year warranty. It weighs 20.06 pounds.