Remarks: Quality and design: - Compact and self contained (extremely easy to store) - Both the air hose and power cord are tucked away tightly in the bottom of the case - Seems well made to be light weight medium use - High quality plastic housing, nylon air hose and air strap - The air strap will not let air through when connected to the bar attachment - There is a notch on the bottom of the housing to fit the air hose underneath and allow the base to sit flat - I'd like to see a longer air tube, so how it's impossible to get to the top of a tire when it's next to the top of a car tire (a small 6" stand solves the problem though). - No problem for bicycle tires (since you can easily spin them) or other inflatables - The buttons for the various functions are well distributed, logical and very easy to use - The handle is made of soft plastic, pleasant to the touch - Four valve attachments provided and Presta inflatable boats are of high quality and there is a spare fuse - LED screen is easy to read although gh could have better contrast - Has battery indicator icon, pressure type to choose from (PSI, BAR, etc.) - The instruction manual is large enough to make them legible, concise, and helpful. How to use the pump: - Charge the pump's internal battery before first use - Use a special USB cable with my 5.0V plug-in USB adapter from my phone to charge (emphasize that this is not a standard USB cable Charging indicator on USB cable, not on the base unit) - Battery charging took about 4-5 hours - Charging time from internal pump battery only (approximate time): - 2 bike tires (40- 60 lb capacity) flat to 45 PSI - 15-20 seconds flat to 55 PSI - 30-35 seconds - 2 e-bike tires (70-100 lb capacity) 60 to 80 lbs - 45 seconds 40 to 90 lbs - 90 SECONDS - 2 bike tires with presta valve (max inflation 110 lbs) Used presta connector with pump included. Flat to 70lb ((tires didn't go up since they were deflated for 3-4 years) - 2 car tires (205-55-ZR17) Used the same tire to do multiple tests by being deflated and then inflated - 24lbs to 37 lbs (actual) Reset to stop at 33.5 lbs Less than 2 minutes - 28 lbs to 35 lbs (actual) Preset to stop at 32 lbs 93 sec - LED display accuracy for preset PSI: - Auto shut off preset stops 1.5psi above set value (Example: if you set it to 50psi it will be 1.5psi higher but after start up was the correct PSI on bike tires. This may be intentional as You lose some air when removing the connection.) - Accuracy - Oddly enough, there was a difference between bike and car tires - Bike tires - Refueling multiple bike tires, the pump LED was between 1-2.0 pounds of the desired preset (always on the high side).Nac However, h after removing the clamp it was at or near the desired PSI - Car tires - Off on the high side of 3 to 3.5psi (just deflate to get the desired PSI) - Heat dissipation (Note: The manual says 8 - 10 minutes to 15 minutes) - Since it was switched on for a short time, the light hardly got warm - Light on the pump: - Press the "R" button once for permanent light - Press the "R" button twice for SOS light The main advantages of the pump: 1. Self-contained, light weight and easy to store in small spaces 2. Ability to inflate tires with built-in battery or external 12V DC cigarette lighter. I love having both in case you forget to charge the battery or it runs out. 3. Longer battery life than expected on a single charge - inflated 6 flat bike tires, 4 partially inflated bike tires, and 7 and 14 pounds of air inflated in 2 car tires (2 out of 4 bars stayed on the battery gauge 4. Preset pressure gauge for auto-stop and quieter than others Pumps I've used 5. Faster than I expected (no more than 2.5 minutes on any of the above tires I've inflated) Not sure about durability yet, got a longer inner tube and wanted a slightly more accurate sensor I would give 4.5 stars Since it is not available I thought it would be 5 stars rather than 4. Conclusion: Happy with the purchase Note 30 days after purchase: Cannot reply received from the company.promotion they are included in the box with the air pump.none of these letters have had a reply so i have to assume they may not respond if s you have a problem with the product. I lowered my rating by one star due to lack of support.
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