Overview

The ESR CryoBoost 3-in-1 is built around one idea: keep the phone cool, keep the charging fast. Its integrated CryoBoost fan actively reduces phone temperature by up to 4°C during 25W Qi2.2 charging, preventing the throttling that plagues passive cooling competitors. Where other chargers start at 25W and quietly drop to 15W or lower as heat builds, the CryoBoost maintains consistent high-speed delivery throughout the entire charge cycle.

At $104.99 (regularly $129.99), the ESR undercuts premium competitors by $25-45 while matching them on speed and outperforming most on thermal management. The trade-off is a bulkier base than fanless alternatives and audible fan noise that rules it out as a silent nightstand companion.

For desk users who charge their phone while working — the exact scenario where heat throttling matters most — the ESR CryoBoost delivers the best sustained charging performance in our roundup.

Features Deep-Dive

CryoBoost Active Cooling System

ESR's CryoBoost fan is more aggressive than competing cooling systems, prioritizing thermal performance over whisper-quiet operation. It reduces the phone's surface temperature by up to 4°C compared to passive charging — a meaningful difference when you consider that lithium-ion batteries charge most efficiently between 20-25°C. The cooling system activates automatically when the charger detects elevated temperatures, and unlike some competitors, it doesn't require manual toggling. This "set it and forget it" approach works well for desk users who don't want to manage fan settings.

Qi2.2 25W Fast Charging

The CryoBoost carries full Qi2.2 certification, delivering 25W to compatible iPhones including iPhone 16 Pro Max and iPhone 17 series. It simultaneously charges Apple Watch at 5W and AirPods at 5W. The magnetic alignment holds the phone securely in both portrait and landscape orientations, supporting StandBy mode on iOS 17+. ESR's strong magnet array provides confident snap-on attachment even with MagSafe cases.

Carbon Fiber Design Aesthetic

ESR offers the CryoBoost in a carbon fiber texture finish that stands out from the sea of matte black charging docks. The base is wider than fanless competitors to accommodate the cooling system, but the upright design keeps the desk footprint manageable. The construction feels solid without the premium heft of aluminum builds — a reasonable trade-off at this price point.

Safety and Certifications

The charger includes foreign object detection that pauses charging if it detects metal objects (keys, coins) between the charger and phone. Overcharge protection, overvoltage protection, and temperature monitoring round out the safety suite. With a 4.78/5 star rating from over 60 user reviews, real-world reliability is well-documented.

Pricing Analysis

At $104.99 (frequently on sale from $129.99), the ESR CryoBoost offers a compelling value proposition. It matches the Belkin UltraCharge Pro ($129.99) and UGREEN MagFlow ($139.99) on charging speed while undercutting both on price. The missing piece is the power adapter — ESR doesn't include one, so budget an additional $15-25 for a 45W USB-C adapter. Even with that addition, the total cost undercuts the Belkin (which includes its adapter). For users who already own a quality USB-C adapter, this is the best-value 25W 3-in-1 charger available.

Who Is This For?

ESR CryoBoost 3-in-1 25W Stand works best for:

• Desk chargers who use their phone while it charges and need sustained 25W speed without throttling
• Value-conscious buyers who want premium charging speed at a mid-range price
• Heavy phone users who game, stream, or video call while charging — the exact scenarios where CryoBoost's cooling matters most
• Users in warm climates where ambient temperature makes passive cooling chargers throttle more aggressively

Who Should NOT Use This

ESR CryoBoost 3-in-1 25W Stand might not be the right choice if:

• You're a light sleeper — the fan is audible at nightstand distance and there's no manual off switch; consider the Belkin with its toggle or a fanless option like the Satechi Trio
• Desk space is tight — the wider base needed for the cooling system takes up more room than slim competitors
• You need to charge a Samsung Galaxy Watch — like all 3-in-1 chargers in our roundup, the watch spot is Apple Watch only

Bottom Line

The ESR CryoBoost is the performance pick for desk users. Its aggressive active cooling keeps 25W charging speeds consistent where other chargers throttle, and the sub-$105 price (on sale) makes it the best value 25W 3-in-1 in our roundup. Just know that the fan noise and bulkier base are the price you pay for that thermal performance.

FAQ

How loud is the CryoBoost fan?

The fan is audible in a quiet room — think "desk fan on low" rather than "computer fan at full speed." It's fine for a home office or living room but will be noticeable if placed on a nightstand next to your bed. The fan activates automatically and cannot be manually disabled.

Does CryoBoost actually charge faster than chargers without fans?

Both start at 25W. The difference is sustained speed. In warm environments or during phone-while-charging use, passive cooling chargers typically throttle to 15W or lower within 10-15 minutes. The CryoBoost maintains closer to 25W throughout, resulting in meaningfully faster total charge times in these scenarios.

What power adapter do I need?

ESR doesn't include an adapter. You need a 45W or higher USB-C PD adapter for full 25W speed. A 30W adapter will work but may limit output to 15W. Anker, UGREEN, and Apple all make compatible 45W adapters in the $15-25 range.

Can I use it as a nightstand charger in StandBy mode?

Technically yes — it supports landscape orientation for StandBy mode. But the always-on fan noise makes it a poor bedroom choice. For nightstand use, consider the Belkin UltraCharge Pro (fan toggle) or the fanless Satechi Trio.