VOLTCRAFT VC-C904 varavirtalähde 20000 mAh USB PD 100 W mattaharmaa LCD-näyttö

The VOLTCRAFT VC-C904 sets a new benchmark for high-capacity mobile power, delivering a full 100 W of USB Power Delivery output from a 20000 mAh Li-Po cell. Unlike many power banks that throttle output under load, the VC-C904 sustains its rated wattage across two USB-C ports, making it a true companion for laptops, tablets, and power-hungry peripherals. The matte grey chassis houses an advanced LCD that reports remaining capacity, voltage, and current in real time, so you always know exactly how much energy is left.

Highlights

• 20000 mAh lithium polymer battery for extended runtime
• 100 W USB Power Delivery 3.0 output via USB-C
• Dual USB-C ports (both support input and output) plus one USB-A Quick Charge 3.0 port
• Clear LCD display for capacity, voltage, and current monitoring
• Simultaneous charging of up to three devices
• Comprehensive protection: overcharge, overdischarge, short circuit, overcurrent, overvoltage

In daily use

Charge a 16-inch MacBook Pro at full speed, top up a smartphone and wireless earbuds at the same time, or keep a portable monitor running during a presentation—the VC-C904 handles it all without breaking a sweat. The USB-C ports negotiate PD profiles up to 20V/5A, while the USB-A port delivers up to 18W for Quick Charge-compatible devices. Automatic device detection ensures each connected gadget receives the optimal charging profile, preventing damage and maximising efficiency. The matte grey finish resists fingerprints and scratches, and the compact footprint slips easily into a laptop bag or backpack.

Full specifications

• Battery capacity: 20000 mAh (Lithium Polymer)
• Max total output: 100 W
• USB-C output: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A (100 W max per port)
• USB-A output: 5V/3A, 9V/2A, 12V/1.5A (18 W max)
• USB-C input: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A (100 W max)
• Charging technology: USB Power Delivery 3.0, Quick Charge 3.0
• Display: LCD (capacity, voltage, current)
• Colour: Matte grey
• Safety features: Overcharge, overdischarge, short circuit, overcurrent, overvoltage protection
• Simultaneous charging: Up to 3 devices
• Automatic device detection

Final note

For professionals who refuse to be tethered to a wall outlet, the VC-C904 delivers uncompromising power and transparency. Its 100 W output and informative LCD make it the definitive choice for demanding mobile workflows.