Calmara MY20 Rechargeable Electric Bike Pump, 130 PSI

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Product guide

Calmara MY20 Rechargeable Electric Bike Pump, 130 PSI

Electric Bike: The Calmara MY20 is a compact, battery-powered bicycle pump with a digital pressure gauge, automatic shut-off and claimed compatibility with Presta and Schrader valves. Its claimed 130 psi maximum and small listed weight suit riders seeking a rechargeable pump for carrying on rides, though the listing gives conflicting dimensions and inflation-time claims.

At a glance

The listing claims automatic shut-off at a selected pressure and a digital pressure gauge with accuracy within ±1 PSI.
The title and product details describe use with Presta and Schrader valves, with a Presta adapter listed among the contents.
The manufacturer claims a 2000mAh battery can inflate 2 to 3 road tires per charge, with the tire size and pressure varying between claims.
The listing states a 55-minute full charge time and claims 0–80 PSI inflation for a 700x23C tire in under one minute.

Price

$49.09Save 5%

Reference price: ~~$51.68~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Compact listed weight of 277 g for carrying in a ride bag or pack.
Auto shut-off and a digital gauge are intended to help set pressure without continuously monitoring inflation.
The included-components list names a hose, Presta adapter, Type-C charging cable, heat sleeve and storage bags.

Cons

The manufacturer notes that the brushless motor can produce noise and heat during use.

Technical specifications

12 specifications

Identity
Brand	Calmara
Model	MY20

Inflation and operation
Maximum pressure	130 psi
Air flow capacity	12 liters per minute
Operation mode	Automatic

Power and battery
Power configuration	Battery Powered
Battery type	Rechargeable
Voltage	7.4 volts
Battery listing	1 Nonstandard Battery batteries required. (included)

Dimensions and construction
Weight listed	277 g
Material listed	Acrylonitrile Butadiene Styrene
Colour	White

What to know before buying

Listing details to confirm

The listing's dimensions are contradictory: one detail gives 6L x 3.7W x 7.8H centimetres while another gives 6 x 3.7 x 7.8 cm, alongside a different weight figure. Inflation claims are also inconsistent: 700x23C from 0–80 PSI is claimed in under a minute, while another answer says 80–100 PSI takes about 35 seconds and 0–130 PSI takes around 3 minutes. Battery-life claims specify different tire sizes and pressures. Treat these as listing claims rather than settled performance figures, and confirm the details that matter for your use.

What’s in the box

Included

1 x Mini electric bike pump
1 x American air valve hose
1 x Presta valve adapter
1 x Type-C charging cable
1 x Silicone heat sleeve
1 x Drawstring bag
1 x Wrist lanyard
1 x Waterproof bag
1 x Manual

Who is it for?

A good fit for

Cyclists wanting a rechargeable emergency pump with a gauge and automatic stop.
Riders using Presta or Schrader valves who prefer a compact electric pump over manual inflation.
Buyers who value a listed accessory set with a hose, adapter, charging cable and carrying options.

Less suited to

Riders who need confirmed inflation times, battery capacity across a particular pressure range or exact dimensions before purchasing.
Anyone seeking a quiet pump, since the manufacturer says the motor may make noise during use.

Calmara MY20 Rechargeable Electric Bike Pump, 130 PSI · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 85 ratings

5 stars80%80%
4 stars5%5%
3 stars4%4%
2 stars8%8%
1 star3%3%

Customer feedback highlights perceived performance, quality and compactness. Those impressions are relevant for a small ride-carry pump, but they do not verify the listing's pressure accuracy, inflation speed or battery-life claims. The aggregate ratings are generally favourable but include lower ratings as well, and do not explain the reasons behind them.

Positive themes

Customers describe the pump's performance and quality positively.
Customers appreciate its compact size.

Frequently asked questions

Does the Calmara MY20 support both Presta and Schrader valves?

The listing claims compatibility with both. Its included-components list names an American air valve hose and a Presta valve adapter.

What is the stated maximum pressure?

The listing gives a maximum of 130 psi. Inflation times and battery-life claims elsewhere on the page are inconsistent, so treat them as claims rather than guaranteed results.

How many tires can it inflate on one charge?

The manufacturer claims 2 to 3 tires per charge, but the claims refer to different tire sizes and pressure ranges. The page does not provide one consistent estimate for a specific use.

What comes in the listed package?

The manufacturer contents list names the pump, air hose, Presta adapter, Type-C charging cable, silicone heat sleeve, drawstring bag, wrist lanyard, waterproof bag and manual.