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With a pack size of 72 x 49 x 54 millimetres (with valve without extension hose), the new Topeak E-Booster Digital Mini is ideal for the jersey pocket. Thanks to the adjustable target pressure, inflation is quick and precise. Topeak specifies a maximum pressure of 8 bar (120 PSI). The easy-to-read LED colour display shows the pressure down to a hundredth. Even a small LED light is integrated. The mini compressor is compatible with Presta and Schrader valves >> available here.
Topeak E-Booster Digital Mini: It pumps well
The 80 millimetre long extension hose makes tightly installed valves with a high number of spokes easily accessible and facilitates handling. What's more, the flexible rubber hose also serves as a temperature barrier between the hose valve and the brass air outlet on the device. Experience has shown that this can become quite hot under heavy use. For example, the valve stem of TPU hoses is sensitive to heat and can melt when exposed to excessive heat. The best-known competitors that we have already been able to test are the AS 2 Pro models from Cycplus and the nanoFumpa from Fumpa.
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Small, persistent and loud
After unpacking, the small Topeak compressor leaves a positive impression: the compact design with the pump head on the side is typical for this class, the surface is fairly smooth and the workmanship is good.
On the scales, we weighed in at 143 grams including the tube. This makes the Mini Topeak one of the lightest of the competition. The eight centimetre long hose adapter makes it much easier to attach to the valve; its mouthpiece - like the valve head on the housing - can be used for both valve types by simply turning it round.
The display with illuminated digits remains easy to read even in daylight, and the operating logic can be internalised after just a few attempts. For example: Set the desired pressure using the plus and minus buttons and start the pump. Once the target pressure is reached, the pump switches off. Topeak specifies a maximum pressure of eight bar and three fillings to 5.5 bar for 28 mm road bike tyres per battery charge.
In the test, we reached seven bar and pumped a total of four 32 mm tyres to 4.0 bar in an average of 65 seconds - with the usual loud background noise. The fifth tyre was pumped up to 1.6 bar after 30 seconds. In comparison, this is a respectable result for such a small compressor.
We also liked the readability of the colour display and the intuitive operation. All functions are self-explanatory, so there was no need to refer to the operating instructions. Accessories include a USB-C charging cable and a suitable transport bag for protection.
Topeak E-Booster Digital Mini: Technical data
- Weight: 143 grammes
- Dimensions: 72 x 49 x 54 millimetres, 80 millimetre tube
- Battery capacity: 500 mAh
- Charging current: 5 volts, 1.5 amps
- Valve standard: Presta and Schrader
- Maximum pressure: 8 bar (manufacturer's specification), 7 bar measured
- Performance test: 4 32 mm tyres to 4 bar in an average of 65 seconds
- Price: 109,95 Euro >> available here
Matthias Borchers
Editor
