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Due to 35% to 45% energy loss in the battery cells and circuit conversion, a fully charged Anker Nano Power Bank (1OK, 45W, Built-In Retractable USB-C Cable) delivers about 5,500mAh to 6,500mAh of usable power.
This power bank supports up to 45w, but some phones don't accept that much power. Even for phones that do,charging speed may slow down as the device heats up to protect the battery.It's normal for the smart display to show below 45W while charging.
We don't recommend using this power bank to charge laptops. Due to its limited capacity and heat buildup during high-power output,it cannot sustain 45w charging for long. It's best used for quick top-ups in emergency situations.
To protect your devices,the power bank limits output when using multiple ports.Max single-port output is 15W when using 2 ports and 7.5W max per port when using 3.