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Black rectangular GaN charger with 10ft USB-C cable

GammeefyPro HYC-1638 65W GaN3 Power Adapter 10ft Cable

SKU CH-4BJM-JMHNK

A 65W GaN3 USB-C charger with a 10ft cable that powers Nintendo Switch 2, Steam Deck and ROG Ally at full speed and supports 4K TV dock mode

  • ColorBlack
  • Support Volttype_c_2pin_eu
  • SpecificationsHYC-1638, GammeefyPro, 5.4102 L x 7.493 W x 10.3886 H centim
  • 65W fast charging reaches 80% battery in 1.5 hours
  • GaN 3.0 technology raises power density 28% and cuts heat 22%
  • 10 ft cable lets you play while charging across the room
  • Five protection circuits plus 4000V surge rating keep devices safe
  • Compact 49×45×38 mm design matches official charger size for travel

Switch 2 replacement charger

The GammeefyPro HYC-1638 is a 65W GaN3 power adapter built as a direct replacement for the Nintendo Switch 2 (2025) AC adapter. It also supports the original Switch (2017), Switch OLED, Switch Lite, Steam Deck, Steam Deck OLED and ROG Ally. A fixed 10ft USB-C cable is integrated, so no separate cable is required for handheld or docked charging.

Sustained 65W output with GaN3 efficiency

GaN3.0 technology raises power density by about 28% and improves heat dissipation efficiency by 22% compared with first-generation GaN chargers. The adapter delivers a continuous 65W maximum (20V/3.25A) and maintains the 20V/3A (60W) profile required for stable 4K TV mode on the Switch 2 dock. Five protection mechanisms — short-circuit, over-voltage, over-heat, over-charge and over-current — plus a 4000V lightning-strike withstand rating protect the unit during extended sessions.

Upgrades the stock dock tether and travel kit

This single brick replaces the official Switch 2 charger and eliminates the need to unplug the dock cable when moving between rooms or travelling. It adds PPS support for 25W fast charging on compatible Galaxy devices, though 45W fast charging requires the original 5A E-Marker cable. Buyers who need more than 65W for larger laptops or multi-device charging should look at higher-wattage solutions.

Highlights

  • 65W fast charging reaches 80% battery in 1.5 hours
  • GaN 3.0 technology raises power density 28% and cuts heat 22%
  • 10 ft cable lets you play while charging across the room
  • Five protection circuits plus 4000V surge rating keep devices safe
  • Compact 49×45×38 mm design matches official charger size for travel

Specifications

BrandGammeefyPro
ModelHYC-1638
ColorBlack
Support Volttype_c_2pin_eu
SpecificationsHYC-1638, GammeefyPro, 5.4102 L x 7.493 W x 10.3886 H centimeters, 0.222 kilograms, false

Questions about this item

How warm does the 65 W GaN 3.0 charger get when powering a Switch 2 for hours?

It runs warmer than low-power adapters because the Switch 2 processor draws more power, but the GaN 3.0 design improves heat dissipation by 22 % over first-gen GaN and includes over-heat protection.

What must I already own to use this adapter with a Switch 2 in TV mode?

You need the original Switch 2 dock; the charger supplies the required 20 V / 3 A (60 W) for stable 4K output through that dock.

Will the fixed 10 ft USB-C cable work with my older Switch (2017) and Steam Deck?

Yes, the charger negotiates 5 V / 3 A, 9 V / 3 A or 15 V / 3 A for those devices, so the same cable charges them at full supported speed.

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