Features: Digital display with power, detachable, welding-free, with anti-reverse connection protection, can charge 21 18650 flat-head batteries, when the built-in battery can be used as a power bank. Hand-made DIY mobile power kit, self-configured mobile power, larger battery capacity and more durable, can better solve your charging problem. Suitable for people with greater charging needs, equipped with 3 charging interface types, for Micro, for Apple, for Type-C can charge the charging box. With power display, let you know the remaining power anytime and anywhere, and better charge your mobile phone or other devices. Comes with a lanyard, which is more convenient to carry, allowing you to take it wherever you go. Specification: Size: 170*84*62mm, Normal Version Maximum Power: 5V-2.1A, Wireless Charge Version Maximum Power: 5V-2.1A, Wireless Charging: 5W, Quick Charge Version Maximum Power: 5V-3A 9V-2A 12V-1.5A, Quick Charge + Wireless Charge Version Maximum Power: 5V-3A 9V-2A 12V-1.5A 3.4V-5.5V-5A, Wireless Charging: 10w. Package included: 1x 18650 Power Bank Case (Batteries NOT included)