General description The 12X18650 Charging Battery Case is a versatile and user-friendly power bank designed for DIY enthusiasts. It features a digital display for power monitoring, detachable components, and a welding-free design. This case can accommodate 12 flat-head 18650 batteries and can function as a power bank, offering both wired and wireless fast charging options. It is ideal for users with high charging demands, equipped with three types of charging interfaces: Micro USB, USB, and Type-C. Technical specifications Model: T12 series with light Battery type: 18650 flat-head battery (12 units, not included) Dimensions: Thickness 43mm, Width 80mm, Length 153mm Internal dimensions (without spring): Thickness 38mm, Width 72mm, Length 110mm Output/Input maximum power: 5V-2.1A Color: Black Material: ABS Precautions The battery cannot be used if its outer skin is damaged. Only flat batteries can be used; pointed batteries are not compatible. Ensure correct placement of positive and