A portable power bank (external battery pack) with 22,000 mAh capacity, meant to recharge phones, tablets, and other USB‑powered devices when you don’t have access to a wall socket. 
Specifications
Battery capacity
22,000 mAh
Output ports
Usually dual USB‑A ports (can charge two devices at once)
Output current
~ 5 V / 2.4 A (per port, max) — enough for smartphones, tablets, and most accessories.
Charging support / Input
Supports recharging via Micro‑USB or Type‑C (depending on version) for convenience.
Device compatibility
Compatible with most USB‑powered devices — smartphones, tablets, Bluetooth earbuds/speakers, and other small electronics.
Safety protections
Built‑in protections like over‑charge protection, short‑circuit protection, over‑discharge protection — for safety of both the powerbank and connected devices.
Portability & Design
Compact and travel‑friendly — easy to carry around for daily use or trips.
