Description: 【High Quality Material】: This portable battery box is made of durable PP (Polypropylene) material, ensuring its longevity and robustness for outdoor use. 【Versatile Functionality】: The battery box serves as a multifunctional storage solution for batteries, doubling as an emergency power source with a USB fast charging feature. 【Feature】: Dual USB output:5V/2.4A,Max power 24W.can be use to recharge phone, tablet computer and more. 【Convenient Size】: With external dimensions of 350x180x250mm and internal dimensions of 280x140x160mm, this battery box provides ample space for storing your batteries while being compact enough to carry around easily. 【Application】: Given its portability and functionality, this battery box is perfect for camping trips, outdoor events or emergencies where power sources may be scarce. Specification: Material: PP Size Chart: outside: 35cmx18cmx25cm/13.78inchx7.09inchx9.84inch inner: 28cmx14cmx16cm/11.02inchx5.51inchx6.30inch Package Includes: 1 Multifunctional Battery Box Note: Please allow slightly errors due to manual measurement and different monitors.