Equipped with the 76500mAh capacity lithium polymer battery pack, the portable power station 300W can charge your phone 24 times,laptop 6 times, CPAP 7 hours, light 30 hours, camera 20 times and other mobile devices.Just 3.3KGS and 225*170*210mm, the emergency charger is very easy to carry wherever you want to go.Passed the CE FCC PSE ROHS UN38.3 MSDS IEC62133 METI certificates ,the power source controls the voltage and temperature through BMS, that provides short-circuit, over-current, over-voltage, under-voltage,over-load and temperature protection to protect your devices.