ESR CryoBoost: long-term iPhone 17 Pro retest
Several months with the same charger, now with iPhone 17 Pro charging results, quiet fan operation and an AirPods positioning annoyance.
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ESR reviews
Start with the original CryoBoost review and iPhone 12 Pro charging results, or read the long-term follow-up with the iPhone 17 Pro. Both include my own photos and charging observations.
ESR CryoBoost Foldable 3-in-1
A foldable 3-in-1 charger tested at the desk with an iPhone 12 Pro, Apple Watch and AirPods, including fan-on and fan-off charging results.
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