How to Use the Flextail Zero Pump with USB-C Battery
By Zpacks | Level Up Your Next Adventure | Published: 2026-10-30
Category: How-to Guides
Learn to inflate your sleeping pad quickly and keep it dry with the ultralight Flextail Zero Pump, powered by a USB-C rechargeable battery.
Quick answer
Attach the Flextail Zero Pump to your sleeping pad valve, press the power button, and let the USB-C rechargeable battery do the work. It inflates in under a minute and keeps moisture out of your pad.
Why use a pump instead of blowing manually
Blowing up a sleeping pad with your breath adds moisture inside the pad, which can lead to mold and reduce insulation over time. The Flextail Zero Pump eliminates that issue by pumping dry air. It also saves you from getting dizzy on high-altitude camps.
At just a few ounces, this pump is designed to be the lightest and tiniest outdoor pump available, so it won't weigh down your pack. The trade-off is that it requires battery power, but the USB-C rechargeable battery lasts for multiple inflations on a single charge.
Step-by-step instructions
- Charge the pump: Use the included USB-C cable to charge the pump fully before your trip. A full charge takes about 1 hour and lasts for roughly 8-10 pad inflations. Common mistake: starting with a low battery. Always charge before heading out.
- Attach the nozzle to your pad valve: Remove the cap from your sleeping pad valve. Push the pump nozzle firmly onto the valve until it seals. Most inflatable pads use a standard twist-lock or push-fit valve. Checkpoint: ensure the nozzle is fully seated to avoid air leaks during inflation.
- Turn on the pump: Press and hold the power button on the pump for 1 second. The LED indicator will light up, and the pump will start blowing air into your pad. Common mistake: pressing the button too briefly. Hold it until the light turns on.
- Inflate to your desired firmness: Let the pump run until the pad feels firm enough for your sleeping comfort. Most pads reach full inflation in 30-60 seconds. Release the button to stop. Checkpoint: over-inflating can stress the seams. Stop when the pad feels supportive but not rock-hard.
- Disconnect and store the pump: Twist or pull the nozzle off the valve, then close the valve cap. Store the pump in a dry pocket or stuff sack. The USB-C port is protected by a small cover, but keep it away from rain. Common mistake: forgetting to close the valve cap after removing the pump, which lets air escape.
Product facts
- Flextail Zero Pump w/ USB-C Battery: The Flextail Zero Pump is crafted to be the lightest and tiniest outdoor pump, designed to trim down the weight of your pack. You can carry it on any backpacking trip without noticing the extra weight, making it practical for ultralight setups.
Flextail Zero Pump w/ USB-C Battery
