Bestbuy offers Energizer 5,000mAh Slim MagSafe Power Bank for $13 (Reg $30) with free shipping.

Product Description:
5,000mAh lithium polymer battery with USB-C PD input/output and 15W max magnetic wireless charging. Total output up to 20W. Includes 30cm USB-C cable. Ultra-slim 3.5 inches design, lightweight at 3.7 ounches. Smart protection prevents overcharging and short circuits.

• Capacity
  5,000mAh lithium polymer battery
• Input/Output
  15W Wireless, Qi1, Q2, MagSafe Compatible output and 18W USB-C PD output
• Wireless charging
  15W Wireless, Qi1, Q2, MagSafe Compatible output
• Ultra slim Metal Construction
  Ultra-slim Metal Material just .35 inches thin
• Smart protection
  Smart protection prevents overcharging and short circuits.
• iPhone 16/15/14/13/12 Magnetic Charge
  Strong magnets offer a firm attachment to iPhone 16/15/14/13/12 and keep the phone in place while you charge.
• LED Power Indicator
  LED power indicator shows the battery charging status in a glance.
• Double Up on Speed
  Enjoy 15W ultra-fast wireless charging and power up your devices 2X faster*. Get your iPhone 15 from 0 to 50% in just 44 minutes.
• Universal Compatibility
  Charge smartphones, tablets, smartwatches, headphones, earbuds, and more.
• USB-C Cable Included
  USB-C Cable Included for recharging the power bank or your device.