Upgraded Cable&Port Bi-directional in/out Power Bank: After in-depth research and multiple rounds of R&D testing by experts in the portable charger industry, we have finally overcome the difficultly of built-in cable&C port that can only output or input. KEOLL portable phone charger supports two-way quick charging which means it charges your devices at max speed and also recharges itself with rapid charging. Far ahead of most one-way power banks on the market.,Speedy Charging USB C Battery Pack: Utilize the built-in USB-C cable to elevate your iPhone 15 to 60% in 30 minutes (Fast charging mode)-4 times faster than standard powerbanks. You can also fully recharge this battery bank in 6 hours with a quick adapter (not included). No more waiting a whole day to get back to full power, saving your valuable time. (Note: 40000mAh portable chargers are not allowed on airplanes!),Top-notch Design with a High-capacity Battery: According to the optimization principle, the engineers explored the configuration and appearance of various power banks, decided to adopt a high-density capacitor structure to create this impressive 40000 mAh portable power bank. Built-in USB-C cable eliminates the need to carry extra cables and also makes a good carrying strap. Its rectangular design allows for upright placement, optimizing space efficiency. P6 power bank has achieved a significant improvement both inside and out.,Intuitive Smart Digital Display: The front of power pack adopts a full-screen polished mirror design, LED digital display is clear and visible during charging and discharging, including the Green Outer Ring& Thunder icon indicating fast charging mode. When connected to an electronic device, it will automatically turn on and display the battery's remaining capacity. During recharging, the digital display screen will flash repeatedly to indicate its charging process.,Light Travel Battery Pack: Despite its substantial capacity, our KEOLL portable battery is remarkably compact and fits comfortably in the palm of the hand. For dimensions, the portable battery charger is 150*52*24mm (5.9*2.0*0.94in), weighs 330g (11.64oz). It easily fits into a pocket or bag without adding any extra bulk. Making it a powerhouse for keeping your devices charged while on the go.,Comprehensive security protection&Unparalleled compatibility: The upgraded circuit board structure incorporates a multi-protect safety system, ensuring defense against overheating, overloads, overcharging, and short-circuits. Supporting multiple protocols like PD3.0/QC3.0/PPS/SCP/AFC/FCP. Widely compatible with iPhone 15/15 Plus/15 Pro /15Pro Max /14/ 13/12/11series, Samsung Galaxy, Google Pixel and more Android phones, Tablet iPad etc.,What You Get: KEOLL Portable Charger Power Bank (High Capacity of 40,000mAh, Built-in USB-C Cable, 22.5W Fast Charging/Recharging), User manual, mini USB-C cable; Always at your side: For any issues, reach out the KEOLL authorized store, our expert customer service team will respond promptly within 24 hours to answer questions and resolve any problems you may have with our portable charger.