Preset pressure cut-off is the feature, not the maximum bar rating · review
Oasser Cordless inflator, 10.3 bar, auto-off review
The most completely specified inflator in this hub: 10.3 bar, a road tire in a stated 86 seconds, four modes down to 0.2 bar and up to ten tires per charge.
Our conclusion The one to buy on specification. Nothing else here tells you as much before you spend the money.
Oasser’s LS4102 is the most thoroughly documented product in this hub, and that is genuinely the reason to choose it.
What the manufacturer publishes
Eighty decibels, up to 10.3 bar, using a 17 mm (0.67 in) cylinder and a 390 long-stroke motor, filling a road bike tire in 86 seconds. Compact at 12 × 8.5 × 4 cm (4.7 × 3.3 × 1.6 in). Pressure preselection: set a target value or a budget mode, start with a click, and it stops automatically when the target is reached. Four inflation modes — custom, auto, bicycle, ball — adjustable from 0.2 to 10.3 bar. Up to ten tires in succession on a full charge. A quick-coupling head with four nozzle types for small cars, SUVs, bicycles and balls. Explicitly not suitable for motorhomes.
Why the 0.2 bar figure matters
Most inflators are designed around car tires and their scales reflect it. A range starting at 0.2 bar means wide mountain bike and fat bike tires sit in a usable part of the scale rather than at its very bottom.
The 86 second claim
Specific enough to be checked, which is more than most makers offer. It is for a road tire; a high-volume mountain bike tire will take considerably longer, because volume rather than pressure is what a small compressor struggles with.
The motorhome exclusion
Stated by the manufacturer, and worth respecting: motorhome tires are high volume and high pressure at once, which is exactly what a compact unit cannot do.
What we rate and what we flag
Strengths
Every figure that matters is published — pressure, speed, modes, tires per charge, size and noise
A range starting at 0.2 bar, so wide mountain bike tires are within the useful part of the scale
Four nozzle types supplied for car, SUV, bike and ball
Compromises
The manufacturer states it is not suitable for motorhome tires
Eighty decibels is loud in a flat, whatever the comparison
Not listed on the US market
Where this model is listed
A listing is not an offer: the reference exists on these stores, availability changes daily.
France
Germany
Italy
Spain
United Kingdom
Specifications
Maximum pressure
10.3 bar
Stated speed
Road tire in 86 seconds
Modes
4 — custom, auto, bicycle, ball — 0.2 to 10.3 bar
Per charge
up to 10 tires
Dimensions
12 × 8.5 × 4 cm (4.7 × 3.3 × 1.6 in)
Noise
80 dB stated
Amazon reference
B0D3KM6T9T (identical on 5 markets)
EAN
6972988558658
The questions riders ask
How fast is it?
Oasser states a road bike tire in 86 seconds, using a 17 mm (0.67 in) cylinder and a long-stroke motor. That is a specific, checkable claim rather than a vague one.
Can it do low pressures accurately?
The stated range starts at 0.2 bar, which covers wide mountain bike and fat bike tires — a range many inflators handle poorly because their scales start higher.
Our score
8.1/ 10
The one to buy on specification. Nothing else here tells you as much before you spend the money.
Who buys this one, among bike gear
Anyone who wants to know exactly what they are buying — this is the best-documented inflator here.
Amazon reports what buyers took in the month before this page was last checked: at least 700.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Sources
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
439 g (15.5 oz) · 4000 mAh · up to 8 tires per charge · 4+N smart modes
The second best-selling item across this whole site, at rank 2: a 439 g (15.5 oz) cordless inflator with a 4000 mAh battery, improved sensor technology and up to eight tires per charge.
Best for: A household inflator for bikes, car and everything else, from the product most people actually buy.
The entry cordless inflator here, with five preset inflation modes, a torch at the tip for night-time repairs and a design the maker describes as quieter than comparable units.
Best for: A first electric inflator, kept in a car or a bag for the occasions a hand pump is not enough.