The CYCPLUS AS2 Ultra Tiny E-Pump is a highly portable, lightweight electric pump that impresses reviewers with its ability to inflate tires multiple times on a single charge, despite some concerns about heat, noise, and battery life. It is seen as a reliable replacement for hand pumps, though its price and limited battery capacity may deter some.
Pros
- Very small and lightweight, fitting easily in a pocket.1234
- Can inflate multiple tires on a single charge (2-3 tires to typical pressures).2345
- Includes a digital gauge with auto-stop at desired pressure.234
- USB-C charging is convenient and fast.5134
- Comes with useful accessories: silicone case, extension hose, adapters for Presta/Schrader/ball, and spare parts.5123
- Reliable over long-term use; never failed to inflate in 12 months of testing.4
- Silicone skin helps keep the pump cool to the touch.51
- Effective for roadside punctures, turning them into a quick stop.524
Cons
- Gets very hot during operation, especially at high pressure, making it difficult to handle.153
- Battery life is limited, allowing roughly three inflations per charge; may not handle multiple high-pressure tires.413
- Pressure accuracy is slightly off, reading about 3 PSI low.31
- Noisy during operation.134
- Requires an adapter for Schrader or ClickValve valves, adding an extra item to carry.35
- Price is considered high for an emergency pump.14
- Slightly slower than the AS2 Pro when inflating tires.2
Key Facts
- Weighs between 87-106g depending on case/protector, with bare weight quoted as 87-92g.1234
- Battery capacity is 400 mAh, operating at 7.4V (2.96 Wh).12
- Maximum pressure is 120 PSI (8.3 bar).14
- Charges via USB-C, with charging time around 20-30 minutes.314
- Dimensions approximately 47.1mm x 65mm, with a length of about 6.3 inches.31
- Includes a digital gauge with 1 PSI accuracy, but readings can be off by about 3 PSI.43
- Can inflate a 30mm tire to 60 PSI in about 56 seconds, and a 29x2.35 tire from 0 to 3 bar in one attempt.41
- Price is around $119 or €100.41
Sources
- 1vit:bikesCycplus AS2 Ultra im Test 🔧🚲 Die perfekte Pumpe für die Tour?
- 2Don't Get Dropped CyclingThe Best Mini Electric Pump Just Got BETTER // Cycplus AS2 Ultra
- 3Cycling unboxedCycplus AS2 Ultra Tiny Review | Is Smaller Better? 🤨
- 4veloracycling.comCycplus AS2 Ultra long-term review: 12 months with the 88g e-pump that makes you forget hand pumps existed
- 510 Percent More ComplicatedCycplus AS2 Ultra Review – Portable Electric Bike Pump Tested
Reviews & Ratings
06:10The reviewer received the CYCPLUS AS2 Ultra Tiny E-Pump and initially had low expectations but was pleasantly surprised by its performance. They tested it on multiple bikes and a wheelbarrow tire, finding it capable of inflating high-volume tires from low pressures while retaining charge. They appreciated its compact size, USB-C charging, and the included adapter for tubed tires, and plan to incorporate it into their riding kit.
08:00The reviewer discusses the CYCPLUS AS2 Ultra Tiny E-Pump, highlighting its smaller and lighter design compared to the AS2 Pro, while maintaining functionality. He notes it is suitable for everyday carry and can inflate tires multiple times on a single charge. The reviewer also mentions that the Ultra is slightly slower than the Pro but still effective.
26:26The reviewer praises the CYCPLUS AS2 Ultra Tiny E-Pump for its compact size and portability, noting it can inflate a mountain bike tire from 0 to 3 bar in one go, though it gets very hot during use. They highlight its suitability as a backup pump for sporty riders and suggest that touring cyclists might prefer a larger model with a bigger battery.
09:57The reviewer tests the CYCPLUS AS2 Ultra Tiny E-Pump, comparing it to larger models in size, weight, and performance. It is slightly smaller and lighter than the standard size, but not significantly. It successfully inflated three tires to 70 PSI before running out, with each fill taking about 1 minute 20 seconds. The pump's pressure accuracy was consistent but read about 3 PSI low. It has a USB-C charging port and a silicon case for protection. The reviewer notes compatibility issues with ClickValve and Schrader valves, requiring an adapter, but it can be used without it with more force. Overall, the reviewer recommends it for those needing extra space, but prefers the larger model for an extra tire inflation.

The reviewer found the CYCPLUS AS2 Ultra Tiny E-Pump to be a reliable and convenient replacement for a traditional hand pump after 12 months of use. It is lightweight, accurate, and quick, making roadside punctures a minor inconvenience. However, it has a limited battery life and is relatively expensive.
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