This Anker USB-C power bank solved my biggest problem with portable chargers, and it's 20% off right now

Built-In USB-C Cable: Use the integrated USB-C cable to charge your phones, tablets, and laptops, as well as recharge the power bank, meeting all your charging needs. 30W Bi-Directional Charging: Boost the power bank to 50% in just 45 minutes or achieve a 50% charge for your iPhone 14 within 30 minutes through 30W two-way fast charging.

Anker Nano Power Bank, 10,000mAh Compact Portable Charger Battery Pack with Built-In USB C Cable, 30W Max Output with 1 Usb-c, 1 USB-A, Compatible

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