A 65W UGREEN GaN charger can feel noticeably warm—or even hot—because it’s moving a lot of power through a very small body. GaN (gallium nitride) designs are efficient, but they still produce heat, especially when fast-charging laptops, tablets, or phones at high wattage for extended periods.
During USB-C Power Delivery charging near the charger’s maximum output (close to 65W), it’s common for the casing to become hot to the touch. Heat increases further when the charger is in a warm room, tucked behind furniture, or charging multiple devices at once (if your model has more than one port). A slightly warm-to-hot shell can be normal as long as charging stays stable and the charger isn’t causing smell, smoke, or discoloration.
Charging a USB-C laptop or gaming handheld can keep the charger near peak output for hours. That sustained load is one of the fastest ways to build heat.
If the charger is pressed against carpet, bedding, a couch, or trapped inside a crowded power strip area, heat can’t dissipate. Even a few inches of airflow space can help.
Low-quality or damaged USB-C cables can waste energy as heat. For 60W–65W charging, use a properly rated USB-C cable (often labeled 3A or 5A/100W) and make sure the connectors fit snugly.
On multi-port chargers, splitting power between two devices can increase internal switching and heat, even if each device is drawing less than 65W.
Unplug the charger and discontinue use if it becomes painfully hot within minutes, emits a burning smell, makes buzzing/crackling sounds, or causes repeated charging dropouts. Also stop if the plastic housing looks warped or discolored.
For a quick refresher on PD profiles, wattage, and how 65W USB-C chargers negotiate power, see the full guide: https://majorane.com/guide-65w-gan-usb-c-charger-quick-charge-pd-guide/.
Usually not—devices and chargers negotiate power and will throttle or stop if temperatures exceed safe limits. If charging is unstable or the charger shows signs like odor or discoloration, stop using it and replace the charger or cable.
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