For more than twenty years, the team at Tout Terrain has been creating clever solutions to the types of problems faced by round-the-world cyclists. Case in point: the Plug series of dynamo-powered USB ports. Designed to fit neatly inside most steerer tubes, the Tout Terrain Plug transforms the stem cap into a convenient mobile charging station.
Now, the Plug is back—lighter, smarter, and with higher capacity than before—as the Cinq Plug Plus 7. Featuring a PowerModule capacity double that of previous “Plus” generations (2200 mAh vs 1100 mAh), the Plug Plus 7 stores excess energy generated by the dynamo hub at higher speeds to keep power flowing when forward momentum slows or comes to a stop.
The updated housing shaves 35 grams off the prior iteration (160 grams vs 195 grams). Smart Charge continuously optimizes power draw based on wheel size, dynamo, and riding speed, while the Auto-Light-Switch prioritizes maximum light output, ensuring device charging never impacts a rider’s visibility.
Key Features
- 2200 mAh integrated PowerModule – stores excess dynamo energy and maintains power supply at low speeds and during stops.
- Smart Charge – continuously optimizes dynamo power extraction according to wheel size, dynamo, and riding speed.
- Intelligent Device Management (IDM) – automatically manages charging according to the connected device, with up to 1100 mA charging current.
- Auto-Light-Switch – prioritizes maximum lighting brightness when the bike lights are switched on.
- Auto-Power-Save – protects the PowerModule by activating energy-saving mode when its charge level drops below a safe threshold.
- USB-C interface – symmetrical, easy-to-connect USB-C port for compatible USB-powered devices.
- Rotary Door – protects the USB connection from dust and moisture when not in use.
- LED status display – indicates battery level, charging status, dynamo operation, and lighting mode at a glance.
- Rugged aluminum housing – designed for demanding everyday use, with operation specified from -20°C to +65°C.
- Price: €299 / $359
The Plug Plus 7 is now available for preorder in the EU here or for North American customers here, with shipments expected to begin mid-September.