Guide · Pumps
Electric bike pumps: what published inflation tests found, and what they did not
BikeRadar, TOUR and road.cc timed CYCPLUS electric pumps on different tires and targets. Their results, their conditions, and why they cannot be ranked.
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Short answer
Three publications timed CYCPLUS electric pumps: BikeRadar, TOUR and road.cc. Each used a different tire, target pressure and reference gauge, so their seconds cannot be ranked against each other or against the makers' own claims. Read each result with its conditions, and compare only within one test.
Maker claims first, labeled as claims
These figures come from the makers, under protocols they do not publish in full.
- CYCPLUS AS2 Pro: CYCPLUS lists 120 psi maximum, 120 g and USB-C charging.[1] It claims about 80 psi in roughly 50 seconds and 120 psi in about 2 minutes, and up to two 110 psi or four 80 psi fills on 700x25c tires per charge.[1]
- Fumpa miniFumpa: Fumpa lists 120 psi maximum and 190 g with USB-C charging, and claims 3-4 tires per recharge.[2]
- Topeak E-BOOSTER DIGITAL: Topeak lists 120 psi maximum with a 7.4 V, 600 mAh battery and USB-C charging.[3]
A maker's time is its own protocol. It is never directly comparable with a magazine's time.
BikeRadar, 2026
Method. BikeRadar's October 2026 electric-pump test describes 32 mm Tufo tires set up tubeless on a Zipp 303 SW wheel, with a 53 psi front target checked against the SRAM AXS app.[4] Units that got too hot were left to cool before testing continued. The AXS app is a reference, not a traceable calibration.
Results. BikeRadar reported that the CYCPLUS AS2 took 59.3 seconds to reach 51 psi and completed three inflations of a 35 mm tire before stopping at 42.2 psi on the fourth.[4] It reported averages of 43.4 seconds for the AS2 Pro and 24.65 seconds for the AS2 Pro Max to reach 51 psi.[4]
The catch. The results cite a 35 mm tire and 51 psi, while the method section says 32 mm and 53 psi. It is also not explicit whether the 59.3-second AS2 timing used the 35 mm tire. BikeRadar's article gives no AS2 Pro endurance figure we can use.
| BikeRadar result | Tire | Target | Reference |
|---|---|---|---|
| AS2: 59.3 s | 32 mm (method) or 35 mm (results); not explicit | 51 psi (method says 53 psi) | SRAM AXS app |
| AS2: three fills, fourth stopped at 42.2 psi | 35 mm | 51 psi | SRAM AXS app |
| AS2 Pro: 43.4 s average | As above | 51 psi | SRAM AXS app |
| AS2 Pro Max: 24.65 s average | As above | 51 psi | SRAM AXS app |
The AS2 Pro and the AS2 Pro Max are different products: CYCPLUS publishes separate manuals for the AS2, AS2 Pro, AS2 Pro Max and AS2 Ultra.[5] A result for one does not carry over to another.
TOUR, 2026
TOUR measured the CYCPLUS AS2 Pro reaching 4 bar in 59 seconds and 7 bar in 161 seconds on a 700x30c tire, with the housing reaching 62 °C at 7 bar.[6] TOUR also reported 35 °C at 4 bar and about 4.25 tires per charge. It is one sample, and the temperature is the housing only.
| TOUR result | Tire | Target | Reference |
|---|---|---|---|
| AS2 Pro: 59 s | 700x30c | 4 bar | TOUR's measurement |
| AS2 Pro: 161 s | 700x30c | 7 bar | TOUR's measurement |
| Housing: 35 °C / 62 °C | 700x30c | 4 bar / 7 bar | Housing only |
road.cc, 2024
A road.cc reviewer found the CYCPLUS AS2 Pro took about 50 seconds to inflate a 30 mm tire to 60 psi and managed four such inflations per charge.[7] The reviewer checked the pump's gauge only against a track pump, and reported a weight of 138 g against the maker's 120 g. It is a single sample from a May 2024 review.
| road.cc result | Tire | Target | Reference |
|---|---|---|---|
| AS2 Pro: about 50 s | 30 mm | 60 psi | Track pump gauge |
| AS2 Pro: four fills per charge | 30 mm | 60 psi | Track pump gauge |
Why you cannot rank these
Each publication used a different tire width, setup and target, and a different reference for pressure. A pump that reaches 51 psi on one tire in one test cannot be lined up against a pump reaching 60 psi on another tire in another test. Within a single article, such as BikeRadar's AS2 vs AS2 Pro results, the comparison is fairer, but BikeRadar's own method conflict still applies. For more on reading figures, see maker claims vs independent measurements.
What no test here covers
- Other brands. The independent results above cover CYCPLUS pumps only. We found no matching published result for the Topeak E-BOOSTER DIGITAL or the miniFumpa.
- Long-term battery health. None of these tests covers how a pump's battery holds up over months.
- Cycling Weekly's group test. We could not read its results, so we do not cite them.
Heat matters too: TOUR's 62 °C housing figure is why some makers give hose and rest instructions. See electric pump heat and TPU tube valves.
The pick these tests cover
The CYCPLUS AS2 Pro is the approved electric pump with independent results above.
Picks that fit1 product
Choose the AS2 Pro (black). It is not the AS2, AS2 Pro Max or AS2 Ultra, which CYCPLUS documents as separate products, and the results above do not transfer between them.
More on choosing
On Amazon, check that 'Ships from / Sold by' shows Amazon.com or CYCPLUS.
Electric pump for a pocket or bag
CYCPLUS AS2 Pro electric mini pump (120 psi, Presta and Schrader)
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Questions
How long does an electric bike pump take to inflate a tire?
It depends on the pump, tire and target. TOUR measured the CYCPLUS AS2 Pro reaching 4 bar in 59 seconds and 7 bar in 161 seconds on a 700x30c tire, and a road.cc reviewer found about 50 seconds to 60 psi on a 30 mm tire. Those are different conditions, so the numbers are not comparable.[6][7]
Is the CYCPLUS AS2 Pro faster than the AS2?
In BikeRadar's 2026 results, the AS2 Pro averaged 43.4 seconds to 51 psi and the AS2 took 59.3 seconds. BikeRadar's method and results disagree on tire size and target, and it is not explicit that both timings used the same tire, so treat this as one publication's report.[4]
How many tires does an electric pump fill per charge?
Makers claim figures under their own conditions: CYCPLUS claims up to two 110 psi or four 80 psi fills on 700x25c tires for the AS2 Pro. A road.cc reviewer managed four 60 psi fills of a 30 mm tire, and TOUR reported about 4.25 tires per charge.[1][7][6]
Are maker inflation times accurate?
They describe the maker's own protocol, which is not published in full and is not comparable with third-party times. Read them as claims, and compare only results from the same test.[1]