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The Belkin BoostCharge Slim Magnetic Power Bank is a MagSafe-style battery that snaps onto the back of an iPhone and charges it wirelessly, with a USB-C port for wired top-ups. It comes in 5,000 mAh and 10,000 mAh versions and in white, black and sand. The 5K model's best new price is $36.95 at eBay as of November 7, 2026, with 9 stores listing it new.
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Availability unknownSold by brandsmartusa (99.5% positive, 37,700 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
Availability unknownSold by with-love-from-iowa (99.5% positive, 9,800 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.
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Lowest price we've seen: $32.99 on Nov 7 at Belkin. Tracked across 12 stores since Nov 7.
Ratings average 3.8 out of 5 from 117 buyers, which points to a split between people who like the slim magnetic fit and people who find the capacity or charging speed short of what they expected.