Battery-powered air pumps: 4 mobile & 4 stationary mini compressors in the test
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Panting and smelling of overheating, the mini compressor struggles as it tries to force air through its valve hose into our rigid steel tyre measuring dummy; the display on its digital pressure gauge remains far below the desired maximum pressure. "You can do it, little compressor!", you want to shout at the vibrating and ever slower working metal box. But then the small battery-powered air pump runs out of air. Overheated and motionless, it hangs on its air hose and no longer makes a sound.
Not all of the 8 devices tested performed so miserably - after all, the test task was not particularly demanding. We simply wanted to check whether the mini compressors actually achieve the maximum pressure promised by the manufacturer and how long they need to inflate two to four bicycle tyres with a width of approx. 2.35 inches to 1.8 or 2.5 bar.
The four cordless air pumps in the test
- Airbank Pocket SE >> available here
- Cycplus AS 2 >> available here
- Graceemc Man Ltd mini bicycle pump with LCD
- Qchmm Bicycle Tire Inflater HW-125
The four stationary cordless air pumps in the test
- Atkam car air pump model CZK-5617 >> available here
- Neakhmer Wireless Air Pump
- Osram Tireinflate 2000 >> available here
- Xiaomi Portable Electric Air Compressor 2 >> available here
Battery-powered air pumps: Tens of models - one source?
Well-known manufacturers of mini or floor pumps, such as Lezyne, Pedros or SKS, are not - or not yet - represented in this segment. Only Topeak announced at Eurobike that it will be launching a battery-powered mini compressor on the market next spring. New and yet well-known is lamp manufacturer Osram, which has also brought out a rechargeable air pump for the trade fair.
This device segment is currently dominated by unknown or sometimes nameless manufacturers from China who use online department stores such as Amazon and similar platforms as marketplaces. It is striking that many of these devices look almost identical and only have minimal visual differences, such as a different coloured display border. Examples of this are the models from "Atkam" and "Neakhmer", which are available in different variants. The seriousness of these providers can often be recognised by the labels on the packaging or in the operating instructions; sometimes the manufacturer and product name on the device and packaging do not match.
One pump, many names
The minis from Airbank and Cycplus and the slightly larger models from Osram and Xiaomi stand out from the multitude of similar rechargeable air pumps for bicycles. Due to their larger pump volume and more powerful batteries, the latter are not only suitable for bicycle tyres, but also for car tyres, motorbike tyres, air mattresses or paddling pools. Prices range from 40 to 85 euros, with the Cycplus AS 2 being the most expensive. Osram and Xiaomi are around 60 euros.
Apart from the minimalist models from Airbank and Cycplus, which only have an LED battery status indicator and a pressure switch, the other 6 devices are fairly similarly equipped. The scope of delivery usually includes various valve adapters, valve hoses and charging cables. Models such as those from Atkam, Neakhmer or Osram also offer practical additional functions such as a charging socket for smartphones or an integrated torch. In the practical test, the eight rechargeable air pumps had to prove their strengths and weaknesses. As already mentioned, there were weak points that we had not expected. It was disappointing that only 3 out of 8 mini compressors reached the maximum pressure promised by the manufacturer, which also indicated a lack of product safety.
For several devices, the test had to be aborted after around 5 minutes due to worrying heat, noise and odour development. One negative example was the mini-pump from QCHMM, which left the test with a 70-degree housing. Nevertheless, all devices managed the minimum requirement of inflating two or four tyres to 1.8 or 2.5 bar - without any cheering.
Conclusion of the battery-powered bicycle air pump test
The classic pump manufacturers do not currently offer battery-powered air pumps, although Topeak has announced a model for the 2025 season. Most of our test devices are available via Amazon and similar platforms, with the best-known brands being Osram and Xiaomi, which are better known for their lamps and smartphones respectively. In the practical test, only the two branded devices reached the specified maximum pressure; the other mini compressors failed, overheated and produced at least an overheated odour.
The test results of the cordless air pumps
Mobile battery-powered air pumps
Airbank Pocket SE
- Price*: 40 Euro >> available here
- Extras: 2 Adapter
- Valve types: Presta, Schrader
- Functions: On/off switch, battery indicator
- Maximum pressure should/is: 7.0 / 5.0 bar
- Dimensions/weight: 6.5 x 3.1 x 6.6 cm / 92 grams
- Battery: 300 mAh
TOUR rating
- Maximum pressure (30 %): 5,0
- Pumping capacity bar/time** (30 %): 2,5
- Handling/display (20 %): 4,0
- Equipment (10 %): 4,0
- Battery (10 %): 4,0
Overall grade (100 %): 3.9
Conclusion on the Airbank Pocket SE: Mobile handheld flatterer, very compact, minimalist equipment; battery reliably manages two 30 mm tyres up to 2.5 bar; vibrates very strongly and does not reach the maximum pressure.
Cycplus AS 2
- Price*: 85 Euro >> available here
- Extras: Replacement seal, ball valve adapter, valve hose (15 cm)
- Valve types: Presta, Schrader, ball valve
- Functions: On/off switch, battery indicator
- Maximum pressure should/is: 7.0 / 5.0 bar
- Dimensions/weight: 3.2 x 4.7 x 6.7 cm / 115 grams
- Battery: 300 mAh
TOUR rating
- Maximum pressure (30 %): 5,0
- Pumping capacity bar/time** (30 %): 3,0
- Handling/display (20 %): 3,0
- Equipment (10 %): 1,0
- Battery (10 %): 4,0
Overall grade: 3.5
Conclusion on the Cycplus AS 2: Expensive hand flatterer, like the Airbank very compact; sufficient pumping power in the event of a puncture, better handling thanks to hose; gets hot.
Graceemc Man Ltd mini bicycle pump with LCD
- Price*: 50 Euro
- Extras: Valve hose (12 cm), 3 adapters, valve caps
- Valve types: Presta, Schrader, ball valve
- Functions: 4 memory values, battery indicator
- Maximum pressure should/is: 6.9 / 6.8 bar
- Dimensions/weight: 7.0 x 3.3 x 9.2 cm / 321 grams
- Battery: 4400 mAh
TOUR rating
- Maximum pressure (30 %): 2,0
- Pumping capacity bar/time** (30 %): 2,0
- Handling/display (20 %): 3,0
- Equipment (10 %): 1,5
- Battery (10 %): 1,0
Overall grade: 2.1
Conclusion on the Graceemc Man Ltd - Mini bicycle pump with LCD: Still an acceptable size for a jersey pocket, but (too) heavy; works well up to about 4 bar, then vibrates strongly; gets very hot at maximum pressure; best mobile pump.
Qchmm Bicycle Tire Inflater HW-125
- Price*: 70 Euro
- Extras: Valve hose (10 cm), 2 adapters, spare seal
- Valve types: Presta, Schrader, ball valve
- Functions: Battery indicator, 3 memory values
- Maximum pressure should/is: 10.2 / 4.1 bar
- Dimensions/weight: 7.2 x 5.0 x 3.2 cm / 155 grams
- Battery: 500 mAh
TOUR rating
- Maximum pressure (30 %): 5,0
- Pumping capacity bar/time** (30 %): 4,0
- Handling/display (20 %): 2,0
- Equipment (10 %): 1,0
- Battery (10 %): 3,0
Overall grade: 4.5
Conclusion on the Qchmm Bycicle Tire Inflater HW-125: Impostor - only displays the unit PSI, not bar; vibrates strongly and gets 70 degrees hot; falls significantly below the specified maximum pressure.
Stationary cordless air pumps
Atkam car air pump model CZK-5617
- Price*: 60 Euro >> available here
- Extras: 12-volt charging cable, 2 valve hoses, adapter for balls and air mattress
- Valve types: Presta, Schrader, Ball, Luma
- Functions: Charging function, battery indicator, torch, 4 memory values, drain valve
- Maximum pressure should/is: 10.0 / 8.0 bar
- Dimensions/weight: 49 x 67 x 165 mm / 520 grammes
- Battery: 20,000 mAh
TOUR rating
- Maximum pressure (30 %): 4,0
- Pumping capacity bar/time** (30 %): 2,5
- Handling/display (20 %): 1,3
- Equipment (10 %): 1,0
- Battery (10 %): 1,0
Overall grade: 2.4
Conclusion on the Atkam car air pump model CZK-5617: Pump performance increased after several attempts; vibrates weakly, still quiet; does not reach the specified maximum power, smelled of warm metal at the end; the battery is top.
Neakhmer Wireless Air Pump
- Price*: 45 Euro
- Extras: Power supply unit, 12-volt charging cable, valve hose (38 cm), 4 adapters
- Valve types: Presta, Schrader, Ball, Luma
- Functions: Charging function, battery indicator, torch, 4 memory values
- Maximum pressure should/is: 10.3 / 7.5 bar
- Dimensions/weight: 50 x 68 x 170 mm / 621 grammes
- Battery: 6000 mAh
TOUR rating
- Maximum pressure (30 %): 4,0
- Pumping capacity bar/time** (30 %): 2,0
- Handling/display (20 %): 2,8
- Equipment (10 %): 1,0
- Battery (10 %): 1,0
Overall grade: 2.6
Conclusion on the Neakhmer Wireless Air Pump: Vibrates relatively strongly and is loud; falls well short of the maximum pressure; smelled of hot grease at the end of the test; features and battery very good.
Osram Tireinflate 2000
- Price*: 60 Euro >> available here
- Extras: Bottle holder, valve tube (15 cm), ball valve adapter
- Valve types: Presta, Schrader, ball valve
- Functions: Charging function, battery indicator, torch, 4 memory values
- Maximum pressure should/is: 8.3 / 8.3 bar
- Dimensions/weight: 70 x 170 mm / 503 grammes
- Battery: 5200 mAh
TOUR rating
- Maximum pressure (30 %): 1,0
- Pumping capacity bar/time** (30 %): 2,0
- Handling/display (20 %): 1,8
- Equipment (10 %): 2,0
- Battery (10 %): 1,0
Overall grade: 1.6
Conclusion on the Osram Tireinflate 2000: Pumps quietly and with low vibration; reaches maximum pressure linearly without overheating; clear display and operation; includes torch.
Xiaomi Portable Electric Air Compressor 2
- Price*: 60 Euro >> available here
- Extras: Valve hose (21 cm), ball valve adapter, Presta replacement head
- Valve types: Presta, Schrader
- Functions: Battery indicator, torch, 5 memory values
- Maximum pressure should/is: 10.3 / 10.3 bar
- Dimensions/weight: 45 x 75 x 124 mm / 500 grammes
- Battery: 2000 mAh
TOUR rating
- Maximum pressure (30 %): 1,0
- Pumping capacity bar/time** (30 %): 1,5
- Handling/display (20 %): 1,3
- Equipment (10 %): 2,0
- Battery (10 %): 3,0
Overall grade: 1.5
Conclusion on the Xiaomi Portable electric Air Compressor 2: Well-designed test winner without weaknesses; pumps pleasantly quietly and quickly up to maximum pressure; switches on and off with integrated hose switch.
* Prices may vary depending on the provider
** At 1.8 and 2.5 bar
How BIKE tests
Maximum pressure (30 per cent): We checked the specified maximum value with a pressurised tank. Only three pumps reached the target value and were awarded an A for this. For the other five candidates, we cancelled the test at a housing temperature of 65 degrees.
pumping capacity (30 per cent): In the performance test, the compact pumps had to pump a 29x2.35 tyre to 1.8 bar, while the larger pumps had to pump the same tyre to 2.5 bar. The pumps from Graceemc Man Ltd and Xiaomi achieved a fast finish and thus the top score in this category.
Handling/display (20 per cent): The operation of the individual functions, the readability of the display and the fitting of adapters and valve hoses were assessed. Deductions were made if the tyre valve was difficult to reach or if the pump vibrated extremely or became too hot during operation.
equipment (10 per cent): We used different criteria for the compact and large models. While a hose, a spare valve and three valve adapters were enough for the small compressors to achieve a very good grade, the equipment package of the bottle-sized pumps also had to include a 12-volt charging cable, a charging function for third-party devices and adapters for an air mattress in order to achieve an A grade.
Battery (10 per cent): The battery capacity of the eight test devices ranges from 300 to 20,000 mAh. The minimum requirement for the battery life of the small pumps was to inflate two 29x2.35 tyres at 1.8 bar, while the large ones had to cope with four tyres and 2.5 bar.
Matthias Borchers
Editor
