Warmco D4 Battery-Powered Camping Fan 20000mAh with LED Lantern — Foldable, 48H Runtime

The Warmco D4 is a rechargeable 2-in-1 camping fan and LED lantern with a 20,000mAh battery that delivers up to 48 hours of low-speed runtime, quiet brushless operation, and emergency phone charging.

Compact but powerful, the Warmco D4 combines a slim, foldable fan with an integrated lantern and a high-capacity battery so you can stay cool and lit without plugging into mains power. Its five-blade design, four speed settings, and under-45dB low-speed operation make this unit suitable for tents, small rooms, and desktop use. The fan’s lightweight profile, hanging hook, and detachable cover emphasize convenience and easy maintenance for outdoor and indoor activities.

How long will the Warmco D4 run on a single charge?

The D4 uses a 20,000mAh battery that maximizes off-grid runtime. On the lowest speed it can run for up to 48 hours, while the highest setting provides about 15 hours—long enough for multi-day trips or extended indoor use during outages.

• Low speed: up to 48 hours
• High speed: about 15 hours
• Smart LED display shows remaining battery
• 5V/2.4A output for emergency phone charging

Is the fan loud enough to disturb sleep or work?

The Warmco D4 features a brushless motor and large five-blade design tuned for efficient airflow with minimal noise. On the quietest setting it operates below 45dB, making it suitable for sleeping, focused work, or quiet camp evenings.

• Lowest speed under 45dB
• Brushless motor for smoother, quieter operation
• Four adjustable speeds to match noise and cooling needs
• Foldable stand to direct airflow without extra hardware

What makes it practical for camping and travel?

The D4’s slim, lightweight design (1.72 lbs) and foldable stand let it fit into backpacks and small tent spaces without bulk. The integrated hanging hook and bright LED lantern function let you suspend the unit for overhead cooling and illumination, while the detachable cover simplifies cleaning after outdoor use.

• Dimensions: 1.77" slim profile, 8" wide, 6" blade
• Foldable stand and hanging hook for versatile mounting
• Built-in LED lantern for campsite lighting
• Removable cover for quick cleaning after trips

Can it charge other devices or show battery status?

Yes—the Warmco D4 doubles as an emergency power bank with a 5V/2.4A USB output suitable for charging phones and small USB devices. An easy-to-read LED display indicates battery level and current fan speed so you can manage runtime effectively.

• 5V/2.4A USB output for phone charging
• LED display for battery percentage and speed setting
• Detachable components for maintenance and longevity
• Multiple speed options to balance cooling and battery life

Who this is for: The Warmco D4 is aimed at weekend campers, festival-goers, van-lifers, and anyone who needs portable cooling and light without access to mains power. It’s also useful for apartments, home offices, and emergency kits where quiet operation, long battery life, and phone charging might be needed. Choose the D4 if you want a compact, multifunctional device that balances runtime, quiet performance, and easy transport.