Powerful Model / Overwhelming Large Capacity: The Jackery portable power supply 1000 has a super large capacity of 278,400 mAh / 1,002 Wh battery that allows you to charge 4 smartphones simultaneously even in environments where electricity cannot be used for several days. It is safe even for many electrical luggage and helps to ensure power in the event of an outdoor or disaster. Due to the large capacity, the AC adapter rises up to 144°F (65°C) while charging, and it feels quite hot when touching it, but it is designed to be heat resistant up to 156°F (75°C). Please charge in a well-ventilated place when using Charge up to 8 devices simultaneously: The ample output port allows you to charge a variety of devices and devices. The USB terminals are equipped with 4 ports that support PD and QC3.0 rapid charging, and 3 AC outlets. Can simultaneously power up to 8 devices such as USB, DC, AC, etc. Compatible with all devices and can supply power to a variety of things Uses MPPT Control Method: The Jackery portable battery 1000 comes with 4 charging methods of AC adapter, cigarette socket, generator, and solar panel, so you can charge a portable power source anywhere. When charging from the solar panel, it uses MPPT (maximum power point tracking control) to allow maximum power from the solar battery in different weather conditions. The Jackery SolarSaga 100 (sold separately) can be used to charge the battery in the sun. More efficient and less charging time. The portable power supply 1000 can be connected parallel to the same model SolarSaga High Safety: This product has acquired the necessary certifications such as PSE, UN38.3, and uses a highly safe lithium battery that optimizes battery energy efficiency and also extends battery life. In addition, BMS (Battery Management System) provides proper voltage and temperature control, prevents overcharging and over-discharging and increases safety. Do not use if you have a pacemaker attached to your heart. Pacemakers may be affected by this device Accessories: Jackery 1000 portable power supply, AC adapter, car charger cigarette lighter socket, instruction manual (Japanese). It can be used for a wide range of situations, from sleeping in your car, camping, outdoors, home parties, BBQs, to emergency power supplies in case of disaster preparedness or power outages. Note: In order to save energy, the device will automatically turn off after 12 hours when the device is less than 10 W when the AC output port or cigarette lighter output is used