BLUETTI B300 3072Wh Expansion Battery with 500W D050S DC Charging Enhancer

[Reliable Add-on Battery] - By stacking up to 4*B300 units, you can achieve a whopping power output of 12288Wh when combined with an AC300 power station. It's also compatible with AC500, AC180, AC200MAX, AC200P, EB240, and EP500Pro (additional cables are needed for these models). [Standalone Power Station] - B300 features a 100W USB-C port, a 12V/10A cigarette lighter port, and an 18W USB-A port. These versatile output ports allow you to charge essential devices such as smartphones, laptops, mini-fridges, lights, and more, whether you're on the road or at home. [Capacity Booster] - With its modular design, the B300 backup battery enables you to expand the capacity of your existing models effortlessly. Simply connect the B300 to your power station, and you'll have increased power capacity at a minimal cost. Power more devices without breaking the bank. [Fast Dual Recharging] - The B300 can be recharged from both solar and the grid simultaneously, allowing for faster replenishment. With a maximum input of 700W, you can fully recharge the B300 in less than 4.4 hours. Please note that additional accessories are required for AC, car, and lead-acid battery charging.