Large Capacity and Long Battery Life:Portable battery charger features high-density A-grade lithium polymer cells, offering 12000mAh capacity in a compact form. It alleviates the concern of phone battery life, ensuring you stay powered anytime, anywhere Specially Designed For Heating Vests: Our 5V 2.4A power supply is tailored for heating vests, jackets, and pants, fully optimizing features such as high power, safety, battery life, and size. Attention: Not compatible with 7.4V heating suit