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Charging Comparison

Alfa Romeo Junior Elettrica vs BYD SEAL U

Compared variants: 54 kWh vs 87 kWh Design

Updated April 2026

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Data shown is approximate and based on publicly available specifications and real-world estimates. For models with multiple battery versions, this page compares the variants listed above. Actual performance varies with driving conditions, temperature, state of charge, and charger hardware. Always check the manufacturer specification page and your vehicle's manual for official figures. EVcourse is not affiliated with any vehicle manufacturer.

Quick verdict

The BYD SEAL U has the higher published DC charging figure at 140 kW, but the published charge-time data matters more for road-trip stops. The Alfa Romeo Junior Elettrica is listed at about 27 minutes versus 34 minutes for the BYD SEAL U. The Alfa Romeo Junior Elettrica is more efficient at approximately 159 Wh/km. The BYD SEAL U offers more WLTP rated range at 500 km.

Side-by-Side Specs

Spec Alfa Romeo Junior Elettrica BYD SEAL U
Compared variant 54 kWh 87 kWh Design
Battery (approx.) ~50.8 kWh ~87 kWh
WLTP range (rated) ~400 km ~500 km
Efficiency (approx.) ~159 Wh/km ~205 Wh/km
DC fast charging (published) up to 100 kW up to 140 kW
10-80% charge time (approx.) ~27 min ~34 min
Max AC charging up to 11 kW up to 11 kW
DC connector CCS2 CCS2

Charging Speed

The BYD SEAL U has the higher published DC charging figure at 140 kW, which is roughly 40% higher than the Alfa Romeo Junior Elettrica at 100 kW. In practice, that figure only tells part of the story. The charging curve, battery temperature, and state of charge all affect how quickly your car actually charges.

For the published fast-charge window, the Alfa Romeo Junior Elettrica is listed at about 27 minutes, which is 7 minutes quicker than the BYD SEAL U at 34 minutes. On a road trip, that difference adds up over multiple stops.

Range and Efficiency

The BYD SEAL U has a WLTP rated range of approximately 500 km, which is roughly 100 km more than the Alfa Romeo Junior Elettrica at approximately 400 km. WLTP is a standardized lab test. Expect your actual range to be lower, varying with speed, weather, terrain, and driving style.

Efficiency matters more than battery size for daily driving costs. The Alfa Romeo Junior Elettrica consumes 159 Wh/km, compared to 205 Wh/km for the BYD SEAL U. That means the Alfa Romeo Junior Elettrica uses less energy per kilometer, which translates to lower charging costs and fewer charging stops on longer drives.

A more efficient car does not always mean more range. Battery size plays a role too. The BYD SEAL U has approximately 87 kWh of useable battery , while the Alfa Romeo Junior Elettrica has approximately 50.8 kWh.

Which One Should You Choose?

The BYD SEAL U has the higher published DC figure at up to 140 kW, but the Alfa Romeo Junior Elettrica has the shorter published charge time at approximately 27 minutes versus approximately 34 minutes. On road trips, published stop time matters more than the headline kW number alone.

Both cars support 11 kW AC charging, so home and workplace charging speeds will be similar.

If you mostly charge at home or at work and care more about daily driving costs, the Alfa Romeo Junior Elettrica is the more efficient choice at 159 Wh/km. Lower consumption means lower electricity bills over time.

For maximum range between charges, the BYD SEAL U has a WLTP rated range of approximately 500 km, which is roughly 100 km more. Both are capable EVs. The best choice depends on how you charge and how far you drive.

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From Finn, engineer: Charging specs alone do not tell the full story. Real-world charging speed depends on battery temperature, state of charge, and the charger itself. These comparisons use manufacturer-published data. Approximate values only.

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