If you want a purpose-built battery that doesn't add much weight and brings a ton of function, we'd say the $99 MagSafe Battery Pack fits the bill.
The first real photos of Apple's MagSafe Battery Pack are here - The Verge
10000mAh Magnetic Power Bank MagSafe Battery Pack For iPhone 14/13/12 Pro Max
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đăEXCLUSIVE RAISED COILăDifferent from the flat magnetic chargers, our magnetic wireless portable charger with exclusive raised coil, significantly
Mag Safe Battery Pack - 5000mAh Magnetic Wireless Portable Charger, Foldable Wireless Power Bank Stand for MagSafe Battery PD 20W Fast Charging for
Apple MagSafe Battery Pack review
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MagSafe Battery Pack : r/iPhone12
The 7 Best MagSafe Battery Packs for 2023 - MagSafe Battery Packs for iPhone
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What we bought: Anker's MagSafe battery pack charges and pulls double duty as a phone stand
ăFoldable Mag Safe Battery Pack StandăThe MagSafe battery pack with hidden aluminum-alloy stand to enjoy hands-free, 180 degree foldable stand design
Mag-Safe Battery Pack for Apple, 5000mAh Foldable Magnetic Wireless Power Bank with Aluminum Alloy Stand, Portable Travel MagSafe Charger PD 20W Fast
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Magsafe Battery Pack