Coleman Rechargeable QuickPump Air Pump with Hose I measured the noise level of this unit at 97dBA at arm’s length. That’s about as loud as a train going by a hundred feet away. If you pull into a campground at night and want to inflate something, you better have a bullet-proof vest on if you use this thing.

The hose is a convenient feature, especially for air mattresses. However, the unit does not come with any provision for stowing the hose, greatly increasing the likelihood that you will lose or damage it.

This unit uses a 6V sealed lead-acid battery. That means it feels heavy, thanks to the lead.

My unit arrived with a dead battery. If you’ve ever had a dead battery in your car, and then found that it never really was as good afterwards, you’ll understand why lead-acid batteries are usually shipped in a charged state (unless they are shipped dry).

In addition, after a full day of charging, the unit still did not work. A few seconds of charging corrected this, indicating that there is some other defect.

Despite these shortcomings, this is a useful unit, assuming you get one that is defect-free.