Apple MagSafe Battery Pack, "certified refurbished to like new" condition by vendor, $ 59. Use 20% AUGUST20 coupon code to bring price to $ 48. Compatible with iPhone 12, 13 and 14 [apple.com].

Not the largest capacity MagSafe Battery pack, but compact and well made. I suspect it’s getting close to being replaced by a newer model. Best used with a 20W charger and USB-C to Lightning cable (neither included). Real world usage with an iPhone 13 Pro Max gives about a 40% addition to charge, but more with if you have a smaller capacity phone.