Dacia Spring: How a Chinese Platform Became a European Bestseller

The Secret of the Cheapest Electric Car in Europe

When Dacia engineers first laid eyes on the Renault City K-ZE in 2020 - a small electric car produced in China for the Asian market - they knew they had a problem. The car was too "Chinese" for European tastes, scored just one star in crash tests, and its air-cooled battery drew scepticism.

But there was a spark of something brilliant in it: a 27.4 kWh gross battery capacity, of which a remarkable 26.8 kWh is usable (1). That is almost 98% efficiency - a ratio other EVs could only dream of. In most electric cars the gap between nominal and usable capacity runs to 10-15%.

Why does this matter? Because every kilowatt-hour that has to be "locked away" for battery safety means extra weight and higher cost. Dacia showed it could be done differently.

DC Charging (Direct Current) - Fast Charging

CCS Combo 2 Connector - Up to 30 kW (optional)

The Spring can be equipped with a CCS Combo 2 connector, enabling fast DC charging at public stations (5, 9).

Important note: the maximum 30 kW is a theoretical figure you will only see under ideal conditions. In winter, as one tester from Autokult.pl noted, "charging from 20 to 80% achieved a maximum of 16 kW" (8). Why? Because the Spring has no battery pre-conditioning before charging - a feature Tesla introduced over a decade ago.

DC charging time 20-80% at public stations:

• Theoretical: 35 minutes (at 30 kW) (5)
• Winter real-world: 45-60 minutes (at 15-16 kW) (8)
• Summer optimal: ~40-45 minutes (6)

Interesting fact: during DC charging the Spring maintains a stable power curve - none of the dramatic drops seen in larger EVs. As Francuskie.pl reports: "The maximum speed we achieved was 25.2 kW, while the practical average across all charges was 17.2 kW" (3).

AC Charging (Alternating Current) - At Home and Work

7.4 kW Onboard Charger (Single-Phase)

At 7.4 kW the Spring charges from 0 to 100% in approximately 4 hours (4, 7).

AC charging options:

Important: the Dacia Spring has a single-phase onboard charger, so you will only achieve the full 7.4 kW from a 32A industrial socket (red CEE socket).

1. Portable charger 7.4 kW with 32A socket

• Time 0-100%: ~4 hours (7)
• Requires a 32A industrial socket installation
• Fastest home/portable option for the Spring
• Q74 has a mobile app for remote control

2. Portable charger 3.7 kW (our models Q37, P35)

• Time 0-100%: ~5-7 hours
• Works with a standard 230V socket (16A)
• Lower charger cost

3. Household 230V socket (with factory cable)

• Time 0-100%: ~9-11 hours (4, 7)
• Power: up to 2.3 kW (more than some Mercedes models) (7)
• Slowest option, but always available

Technical curiosity: as DailyDriver.pl notes, "from a household socket the Spring achieves up to 2.3 kW, which is more than many Mercedes models manage at 1.6 kW" (7). A luxury car loses to a budget EV on a basic function.

Charging Curve - Why the Spring Is Different

While the Tesla Model 3 or Hyundai IONIQ 5 boast a charging curve like a ski slope (sharp start, rapid drop), the Spring has a curve that is... flat as a table.

Why is this good? With a small battery (26.8 kWh) there is no room for high-power charging. The Spring holds a stable 25-30 kW through most of the DC process, which minimises battery degradation.

Typical DC charging curve:

• 0-20%: ~25 kW
• 20-60%: ~25-28 kW (stable phase)
• 60-80%: ~20-25 kW
• 80-100%: drops to ~10 kW

Battery - Air Cooling in 2025?

Yes, you read that correctly. While competitors cool their batteries with liquid (an expensive solution), the Spring uses fans (4). It is a cost saving, but also a trade-off.

Emergency provision: the Spring has a special opening in the battery casing through which emergency services can inject water in the event of a fire (4). This is a safety feature added during the adaptation of the Chinese platform to European standards.

Effect on charging: in winter, air cooling means the battery takes longer to warm up, which limits DC charging power. In summer it can run too hot, which also slows the process.

Comparison with Competition - Spring vs Smart EQ Fortwo

Parameter	Dacia Spring	Smart EQ Fortwo
Battery capacity	26.8 kWh usable	17.6 kWh
Max DC power	30 kW	22 kW
DC connector	CCS Combo 2 (optional)	CCS Combo 2
Time 20-80% DC	35-45 min	40 min
Max AC power	7.4 kW	7.4 kW
AC charger type	Single-phase	Single-phase
Base price	from ~€18,000	from ~€28,000

The Smart is €10,000 more expensive and has a 35% smaller battery. The Dacia wins by knockout.

V2L Function - An Unexpected Ace Up Its Sleeve

The Spring has something missing from more expensive EVs: bidirectional V2L (Vehicle-to-Load) charging at up to 3.5 kW (12).

What does this mean in practice? You can power:

• An electric kettle (2 kW)
• A coffee machine (1.5 kW)
• A drill (1 kW)
• A travel fridge (60 W)
• A mini electric hob (2 kW)

The Spring becomes a portable power station with a 26.8 kWh battery.

Which Ampere Point Charger to Choose?

The Dacia Spring has a 7.4 kW single-phase onboard charger. This means you need a single-phase charger - three-phase models (Q11, P11, Q22) make no sense here because the car cannot use the extra power.

Q74 (portable charger 7.4 kW) - IDEAL FOR SPRING

Features:

• Power: 7.4 kW (single-phase, 32A, CEE socket)
• Time 0-100%: ~4 hours (Spring)
• Mobile app for remote control and charging schedules
• Variant with adapters: also charges from 230V socket (3.7 kW)

Q74 - 7.4 kW portable charger

P72 (portable charger 7.4 kW)

Features:

• Power: 7.4 kW (single-phase, 32A, CEE socket)
• Time 0-100%: ~4 hours (Spring)
• Simpler operation, LCD display, no app

P72 - 7.4 kW portable charger

Q37 or P35 (3.7 kW) - budget option

If you drive less than 50 km daily and do not have a CEE socket, charging from a 230V socket is sufficient:

• Power: 3.7 kW
• Time 0-100%: ~7 hours (Spring)

Q37 - 3.7 kW portable charger

P35 - 3.7 kW portable charger

Q11, P11, Q22 - NOT for Spring

These are three-phase chargers (11 kW, 22 kW). The Dacia Spring has a single-phase 7.4 kW onboard charger, so you will not be able to use the extra power. You would be paying for capacity you cannot use.

Practical Tips - How to Charge the Spring Sensibly

1. In winter, always charge in a heated garage. An unheated battery combined with frost means half the DC charging power. AC charging does not have this problem.

2. Charge AC to 100%, DC to 80%. With home AC charging there are no restrictions. At DC stations it is better to stop at 80% - faster and cheaper.

3. On the road, look for 50 kW chargers, not 150 kW. The Spring will not draw more than 30 kW anyway. Using a 120 kW station means paying premium rates for power you cannot use.

4. Consider our portable Q74 charger. If you do not have a fixed parking space, the Q74 gives you flexibility. You can charge at your parents', at work, at a hotel. With the mobile app you can set charging schedules and monitor energy usage remotely. Remember: for 7.4 kW you need a 32A socket.

Why This Matters - A Success Story

Since its debut in 2021, Dacia has sold over 100,000 Springs across Europe (25, 29). In Poland in the first two months of 2025 it was the best-selling electric car (289 units) (27).

The secret was not revolutionary technology but simple arithmetic: while most manufacturers were competing over who had the fastest charging (Porsche Taycan 270 kW!), Dacia asked: "What if people simply need 30 kW and a lower price?" The market answered clearly.

What's Next? Spring Second Generation (2026)

The Spring II is expected to debut in 2026 on Renault's new AmpR Small platform (29). Anticipated changes:

• Battery ~30 kWh (up from 26.8 kWh)
• Range ~300 km
• Production in Europe (not China)
• Price from ~€19,000

The open question: will it keep CCS, or will it gain faster DC charging?

Sources

(3) Francuskie.pl winter test - real-world charging details
(4) Auto Swiat - battery and cooling technical data
(5) Dacia official - DC and AC charging times
(6) Chip.pl test - charging to 80% in 45 minutes
(7) DailyDriver.pl - charging power comparison with competitors
(8) Autokult.pl - winter charging test at low temperatures
(9) Dacia charging solutions - official CCS connector info
(12) Dacia Spring official - V2L function
(25) Polisoteka Moto - European sales history
(27) Interia Motoryzacja - Polish sales data
(29) Francuskie.pl Spring II - next generation details

BOTTOM LINE: The Spring does not have the fastest charging, but it has fast enough charging - at a price €10,000-12,000 lower than the competition. With our portable Q74 charger you charge it overnight. At a 30 kW DC station it is a 40-minute coffee break. In the world of EVs, sometimes "good enough" is better than "perfect".