Rolling Square TAU 2 mini power bank review: A key ring to recharge your iPhone

MacworldAt a glanceExpert's RatingProsSuper-compact power bankCan give iPhone a 30% chargeUSB-C/Lightning/USB cables built inConsYou probably will forget to charge itOur VerdictThe tiny Tau 2 is a great and affordable back-up battery that can squeeze out enough juice to recharge the iPhone to nearly a third of its full potential while weighing next to nothing and taking up barely any space.Price When Reviewed
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