smart #3 Charging Cost in Singapore
By mht-dev, Frontend Engineer & Creator
Estimate the cost and time to charge a smart #3 (full battery electric vehicle / BEV) in Singapore, calculated from its battery capacity and local electricity rates, both at public DC fast charging and at home.
smart #3 specifications
- Usable battery capacity
- 66 kWh
- DC fast-charge power (peak)
- 150 kW
- AC charge power (onboard)
- 22 kW
- Manufacturer-claimed range
- 455 km (WLTP)
- Realistic range estimate
- 387 km
- Estimated efficiency
- 17 kWh/100 km
- Estimated charging cost per 100 km
- $5.07
- Battery chemistry
- NMC
A real-world estimate discounted from the manufacturer's claimed figure; actual distance depends on driving style, speed, and conditions.
Estimated from the realistic range, not a measured consumption figure; actual use varies with driving and conditions.
smart #3 charging cost & time
| Scenario | Energy | Time | Cost |
|---|---|---|---|
| Public DC 20% → 80% | 39.6 kWh | 26 minutes | $30.49 |
| Public DC 0% → 100% | 66 kWh | 1 hours 7 minutes | $50.82 |
| At home (AC) 20% → 80% | 39.6 kWh | 1 hours 48 minutes | $11.77 |
smart #3 charging time by charger power
How long the smart #3 takes to charge at different charger power levels, capped by its own onboard limits.
| Charger | Power | Charge | Time |
|---|---|---|---|
| Standard outlet | 2.2 kW | 0% → 100% | 30 hours |
| Home wallbox | 7 kW | 0% → 100% | 9 hours 26 minutes |
| Public AC | 22 kW | 0% → 100% | 3 hours |
| DC fast | 150 kW | 10% → 80% | 30 minutes |
AC rows assume constant charging power and a 0% to 100% charge. Real times vary with the onboard charger, temperature, and the charger you use.
The DC fast row (10% to 80%) is anchored to a measured charging time for this model, so it reflects the real charging curve. Times still vary with temperature and conditions.
Charging speed
Based on measured data, the smart #3 charges 10% → 80% on DC fast charging in about 30 minutes, peaking at around 150 kW. Shares 66 kWh NMC pack with #1.
The smart #3 is estimated to charge from 20% to 80% on public DC fast charging in about 26 minutes (ultra-fast DC).
As of 2026-05-26
Battery care
This car uses an NMC battery. For daily use, charging to about 80% and topping up to 100% only before long trips helps it last longer; heat is the main thing that ages it.
Savings vs a petrol car
This charge adds about 232 km of range for $30.49. Driving the same distance on petrol would cost:
| Engine size | Petrol cost | You save |
|---|---|---|
| ≤ 1000 cc | $44.16 | $13.67 |
| 1000–1500 cc | $52.19 | $21.70 |
| 1500–2000 cc | $64.23 | $33.74 |
| 2000–2500 cc | $76.27 | $45.78 |
| > 2500 cc | $92.33 | $61.84 |
Estimated from typical combined fuel use by engine size and RON95 at $3.46/L. Charging at home saves the most; actual figures vary with driving and conditions.
Related vehicles
Compare with another car →Frequently asked questions
How much does it cost to charge a smart #3 from 20% to 80%?
- Charging a smart #3 from 20% to 80% at a public DC fast charger costs about $30.49.
How long does it take to charge a smart #3?
- Charging a smart #3 from 20% to 80% at a public DC fast charger takes about 26 minutes.