Anker 20000mAh Power Bank with Built-in USB-C Cable $52.24 + Delivery ($0 with Prime/ $59 Spend) @ AnkerDirect via Amazon AU

Normally ~$70 according to 3Camels
Both black and white model on sale.

About this item

• Fast Charging Made Easy: Get high-speed charging with the built-in 22.5W USB-C cable for all your devices and enjoy the convenience of charging your phone 3 to 4 times.
• Easy to Carry, Easier to Charge: Featuring a built-in strap, this power bank portable charger ensures portability and convenient charging wherever you are.
• Power in Your Pocket: Discover the power of a 20,000mAh battery in a slim 4.5 × 2.8 × 1.2-inch design, fueling phones and tablets for days.
• Universal Compatibility: Charge a wide range of phones, smartphones, tablets, and more with remarkable efficiency.
• What You Get: Anker Power Bank (20,000mAh, 22.5W, Built-In USB-C Cable), welcome guide, our worry-free 18-month warranty, and friendly customer service. (Note: The built-in cable supports both charging and recharging; additional cables are not included.)