The CYCPLUS A3 Mini tested in practice

CYCPLUS A3 Mini review: the key points in brief

An electric bike pump for use on the go must be compact while providing enough battery reserve for several tyres. This is precisely where the CYCPLUS A3 Mini comes in. It is larger than the extremely compact AS2-series models but has a significantly larger battery.

In my  CYCPLUS A3 Mini review , I examine how well this concept works in practice. I cover inflation speed, battery life, pressure accuracy, noise, heat build-up and how easily the pump can be carried on a ride.

The A3 Mini is designed to bridge the gap between an ultra-compact emergency pump and a larger electric bike pump. It is still small enough to take on a ride, but its 2,000 mAh battery provides substantially more reserve than the particularly small CYCPLUS pumps.

The desired target pressure is set through the display. Inflation then starts at the press of a button. Once the target is reached, the pump stops automatically.

In my test, this concept  worked very well. I was particularly impressed by  the pumping performance  and battery life.

CYCPLUS A3 Mini review: size and weight

The Mini name needs some context with the CYCPLUS A3 Mini. Compared with conventional electric compressors, it is compact. Compared with a CYCPLUS AS2 Ultra, however, it is significantly larger and heavier.

According to the product specifications, the pump measures approximately 106 × 52 × 42 millimetres. The stated weight is around 212 grams. In my test, the A3 Mini with hose weighed  225 grams  on the scales.

This means it is not a device that goes completely unnoticed in a jersey pocket. In my test, it fitted  well, but could get in the way while riding. Its weight is clearly noticeable during a ride.

The CYCPLUS A3 Mini can be  stored easily in a frame or top tube bag. For gravel, MTB and bikepacking rides, I find the higher weight less significant than on a road ride packed as minimally as possible. The bike pump does not fit in a conventional, normal road bike saddle bag.

Inflation Speed in Real-World Testing

Inflation speed depends heavily on tyre width, tyre volume, starting pressure and the desired target pressure. I therefore tested the CYCPLUS A3 Mini with several typical bike tyres.

For my Continental Grand Prix TT road tyre in size  25-622  , the pump took  1 min 7 sec to bring the tyre from  0 bar  to  5.5 bar .
The second tyre, a Continental Grand Prix S TR in size 28 - 622, was also inflated from 0 bar to 5.0 bar in 1 min 8 sec.

Tyres	Starting pressure	Target pressure	Time
Road bike 25-622	0 bar	5.5 bar	1 min 7 sec
Road bike 28-622	0 bar	5.0 bar	1 min 8 sec

Overall, I find the inflation speed very fast. For a puncture during a ride, it is particularly convenient that no physical effort is needed. Connect the hose, set the target pressure and start inflation; the A3 Mini handles the rest automatically. In a direct comparison with my  CYCPLUS AS2 Ultra , the A3 Mini was about equally fast on the road tyre.

Set the target pressure and inflate automatically

The built-in display lets you set the desired tyre pressure before inflation. During inflation, the pump shows the current pressure and stops automatically once the target is reached.

Operation takes just a few steps:

1. Switch on the pump.
2. Set the desired pressure.
3. Connect the hose to the tyre valve.
4. Start inflation.
5. Wait for automatic shut-off.
6. Carefully remove the hose from the valve.

The target is adjusted using the plus and minus buttons. You can also switch between bar and PSI by briefly pressing + and - simultaneously.
In my test, the buttons responded very well. The display was always easy to read in normal daylight.

Automatic shut-off worked reliably during all tested inflations. On the fourth run, however, the pump overheated and switched off early before reaching the set target pressure. Apart from this overheating protection, the A3 Mini reliably achieved the selected tyre pressure in my tests.

Maximum pressure and display accuracy

The CYCPLUS A3 Mini's maximum pressure is specified as 120 PSI or around 8.3 bar. In my hands-on test, the pump actually reached this figure.

For the maximum pressure test, I used a Continental Grand Prix 5000 S TR in 28 millimetres width. The CYCPLUS A3 Mini took 3 minutes and 2 seconds to inflate the tyre from 0 to 8.3 bar.

Even near the end of inflation, the motor continued to run evenly, although the load increases significantly at this high pressure.

To check the accuracy of the built-in pressure display, I subsequently measured the tyre pressure with a separate Schwalbe gauge. This showed 8.08 bar, making the difference relatively small. However, it must be considered that some air can escape both when unscrewing the pump hose and when attaching the gauge.

The measured difference therefore cannot be attributed entirely to pump measurement error. Overall, however, the cross-check confirms that the CYCPLUS A3 Mini's pressure display was comparatively accurate in my test.

Battery life: how many tyres can the A3 Mini inflate?

Battery life is the CYCPLUS A3 Mini's most important selling point. Its built-in battery has a stated capacity of 2,000 mAh. This makes its nominal capacity five times that of the AS2 Ultra's 400 mAh.

For my battery test, I fully charged the pump and then repeatedly inflated the same tyre from 0 bar to 5.5 bar.

My test conditions:

• Tyre: Continental Grand Prix TT - 25 mm,
• Inner tube system: tubeless
• Starting pressure: 0 bar
• Target pressure: 5.5 bar
• Ambient temperature: 24°
• Connection used: hose for French valve (Presta/Sclaverand)
• Cooling break between runs: 5 min

Inflation	Time	Pressure reached
1	1 min 1 s	5.5 bar
2	1 min 8 s	5.5 bar
3	1 min 7 s	5.5 bar
4	1 min 9 s	5.5 bar
5	1 min 13 s	5.3 bar
6	13 s	2.1 bar
6	41 s	2.1 - 5.5 bar
7	1 min 9 s	5.5 bar
8	1 min 10 s	5.5 bar
9	1 min 13 s	5.5 bar
10	1 min 9 s	5.3 bar
10	5 s	5.3 - 5.5 bar
11	1 min 34 s	5.5 bar
12	1 min 16 s	5.5 bar
13	1 min 24 s	5.5 bar
14	1 min 17 s	5.5 bar
15	1 min 18 s	5.3 bar

Under these conditions, one full battery charge was enough for 14 complete tyre inflations. This gives the A3 Mini significantly more reserve than the AS2 Ultra.

Actual capacity depends heavily on tyre volume, remaining pressure, target pressure and ambient temperature. A road tyre that only needs topping up requires considerably less energy than a completely empty gravel or mountain bike tyre.

For my usual rides, I find battery life more than sufficient. Nevertheless, you should get into the habit of checking the battery level before longer outings.

Charging time and USB-C port

The CYCPLUS A3 Mini charges through a USB-C port. This is practical when travelling because the pump does not require a special charging cable.

In my test, a full charge from 0 to 100 percent took a total of 1 hour and 24 min.

For the measurement, I used the following components:

• Power adapter: 96 watts
• Charging cable: USB-C CABLE

The casing became slightly warm during charging.

Summary

Verdict

The CYCPLUS A3 Mini particularly impressed me with its battery reserve in real-world testing. While very compact electric bike pumps often manage only a few complete tyre inflations, the A3 Mini achieved 14 complete inflations of a 25mm road tyre from 0 to 5.5 bar. This provides considerably more reserve than the much smaller AS2 Ultra.

There is also little to criticise in inflation performance. It inflated a 25mm Continental Grand Prix TT from 0 to 5.5 bar in 1 minute 7 seconds. A 28mm Continental Grand Prix S TR took 1 minute 8 seconds to reach 5.0 bar. I consider that very good speed for an electric pump of this size.

The A3 Mini also reached its stated maximum of 8.3 bar or 120 PSI. With a 28mm Continental Grand Prix 5000 S TR, inflation from 0 to 8.3 bar took 3 minutes 2 seconds. A subsequent check with my Schwalbe pressure gauge read 8.08 bar. Some air can escape when unscrewing the hose and attaching the gauge, so this suggests good overall accuracy from the built-in pressure display.

I also liked the adjustable target pressure and automatic shut-off. Auto-stop worked reliably in normal use. However, stress testing exposed a weakness: after several consecutive inflations, overheating protection intervened once, stopping the pump before the target pressure was reached.

For me, the biggest compromise is size and weight. My test unit weighed 225 grams with its hose. It fits in a jersey pocket but is clearly noticeable while riding. It is too large for a typical small road saddle bag, although it fits easily into a frame or top-tube bag.

Overall, the CYCPLUS A3 Mini is particularly interesting for riders who prioritise maximum battery reserve over minimum packed size. I like the concept for longer road, gravel and bikepacking rides. Anyone seeking an electric pump that disappears unobtrusively into a jersey pocket is probably better served by something smaller, such as the AS2 Ultra.

For me, the A3 Mini is a powerful electric bike pump with very good battery life, strong inflation performance and convenient operation, though its endurance comes with greater weight and size.

You might also be interested in…