The CYCPLUS AS2 Tiny E-Pump (Cube) is a compact and lightweight electronic pump that has won awards and is praised for its portability and convenience for road cyclists. However, independent lab testing reveals significant performance issues, including slow inflation, poor endurance, and a lack of temperature protection, making it less suitable for demanding use or larger tires.
Pros
- Very lightweight and compact, fitting easily in jersey pockets or saddle packs.123
- Can inflate a road bike tire to 80 psi in less than a minute.2
- Rechargeable via USB-C, convenient for on-the-go use.34
- Comes with useful accessories: flexible hose, needle ball inflator, silicone sleeve for heat protection.34
- Won an award at Eurobike 2023 for innovation.35
- Feels safer than CO2 cylinders and is more environmentally friendly.2
- Simple operation with a power button and battery level display.32
Cons
- Slow inflation: took 85 s to reach 70 PSI in lab test, ranking low among competitors.4
- Severe performance degradation: 34.9% drop after 100 cycles and died at 100 cycles.4
- No hose attachment, making it risky for TPU tubes; direct press-on can overheat valves (valve stem reached 180°F).42
- No temperature protection; unit reached 65 °C and failed to complete a third round in lab test.4
- Limited battery life: only 2.21 rounds per charge (28c tire equivalent) and may only inflate one MTB tire to under 20 PSI.43
- Not suitable for mountain biking due to low pressure and battery constraints.3
- Requires additional attachment to convert from Schrader to Presta valve.3
Key Facts
- Weight: 97 g (lab) vs 114 g (reviewer claim); dimensions: 4.35x6.52x2.81 cm; packed volume: 79.7 cm³.42
- Maximum pressure: 105 PSI (lab) or 120 PSI (Pro version claim).42
- Time to 70 PSI in 1.2 L tank: 85 seconds (lab); reviewer measured 1 min 20 sec to 7 PSI on a 29x2.4" MTB tire.43
- Battery: 2.8 Wh; rounds per charge: 2.21 (28c tire equivalent); air pumped per charge: 15.5 g.4
- Performance degradation: -34.9% after 100 cycles; died at 100 cycles.4
- Unit temperature reached 65 °C after round 2 and failed to complete round 3; no temperature protection.4
- Noise at 30 cm: 89 dB.4
- Price: 109.95 AUD.4
Sources
- 1BikeLabHQ5 Incredible Cycling Upgrades from Amazon (for only $10-$120!)
- 2Local Alien / CLIFFI try all 3 CYCPLUS Tiny e-Pumps. 2024 New Cycplus Bicycle Tire Mini Electric Air Pumps. AS2 Pro Max
- 3LoveMTBEasy Bike FLAT Repairs! The CYCPLUS AS2, AS2 Pro, AS2 Pro MAX Tiny e-Pump [Compressor]
- 4Zero Friction CyclingElectric Mini Pump Testing
- 5China CyclingYear in Review: 2023 Panda Podium Awards (CRW, Magene, Cybrei, OVERFAST, etc...)
Reviews & Ratings
05:31The reviewer discusses the CYCPLUS AS2 Tiny E-Pump (Cube), noting its compact size and light weight. They mention that it can inflate a road bike tire in about a minute and has been used for about a year. The reviewer highlights the new AS2 Pro version with a screen for setting pressure, and the larger Pro Max model. They test the pumps on various tires and comment on battery life and temperature concerns.
10:29The reviewer discusses the CYCPLUS AS2 Tiny E-Pump (Cube) as part of a comparison of portable pumps. They note that it is the original pump that won an award at Eurobike in 2023. They test it on a 29x2.4 inch mountain bike tire and find that it takes 1 minute and 20 seconds to inflate to 7 PSI, and the battery indicator shows about half, suggesting it would need a full battery to inflate one tire to under 20 PSI. They describe it as a cartridge replacement, not really for mountain biking, but suitable for road rides where it can fit in a back pocket.
14:10The reviewer briefly mentions the CYCPLUS Cube Mini Bike Pump but does not provide detailed analysis.
21:22The CYCPLUS Cube Mini Bike Pump is mentioned as a runner-up in the 'Best Innovation of 2023' award category. The reviewer highlights that while electronic pumps have been seen before, the CYCPLUS Mini Pump stands out for being the first of its kind to be this small and handy. They mention using it on most of their rides and consider it a good product.
The CYCPLUS AS2 Tiny E-Pump (Cube) ranked 16th out of 18 units tested, with a performance score of 16.49 out of 76. It survived 100 test cycles before dying from seal wear, showing a 34.9% performance drop by cycle 100. Its slow inflation (85 s to 70 PSI) and lack of hose make it risky for TPU tubes and tubeless repairs, and the tester recommends against it.
AI Summary
Full test data from Zero Friction Cycling
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Sign inTest data: Zero Friction Cycling · Electric Mini Pump Testing · v9 · July 2026
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CYCPLUS Cube Mini Bike Pump
CYCPLUS AS2 Tiny E-Pump For Bike
CYCPLUS AS2 Tiny E-Pump For Bike
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