I'm in the UK, and mini electric bike pumps are what I spend my time on. A pressure number on the box is not a count of tyres. These notes are the order I use when I read the CYCLAMI A2S label before I take it out.
What the label actually says
The listing I keep going back to, read on 9 October 2026, shows:
- Preset pressure 0–120 PSI, with a stated measurement accuracy of ±1 PSI
- Airflow 18 L/min
- Battery printed as 2 × 500 mAh / 7.4 V
- USB-C charging, about 45 minutes from a 5 V 1.5 A input
- Pump-only weight 136 g, body 73.6 × 45 × 28.6 mm
- In the kit: an extension hose, a Presta adapter, a Schrader adapter, a ball needle, a silicone case, and a USB-C cable
7.4 V is the nominal voltage of two lithium cells in series. The "2 ×" is already in that voltage. The milliamp-hour figure to write down is 500, not 1,000. At 7.4 V that is 3.7 Wh on the label. It is a nameplate reading. It becomes a count of inflations only after the tyre, the start pressure, the stop pressure, and the reason the pump stopped are written down.
HOT on the display
The same page's FAQ says the display can show HOT. That is the over-temperature stop. The pump has cut out. Let it cool before the next start, and keep skin off the outlet while it is hot.
What I write down before a ride
I do not treat 120 PSI as a promise that every tyre will get there. I write the tyre, the pressure I start from, the pressure I stop at, and whether the pump stopped because it reached the preset or because the display said HOT. Airflow at 18 L/min is the label's rate, not a stopwatch result, until I time one tyre myself.
The hose and the two valve adapters are in the kit, so a Presta road tyre and a Schrader hybrid do not need a second pump. The ball needle is for a ball, not for a tyre. The pump-only weight of 136 g does not include the hose and the case. I pack those as well, or the number on the label is lighter than the bag.
The rest of these notes are at cyclami.co.uk.
