It's the question every new EV owner in Saudi Arabia asks: how many hours do I need to fully charge my car at home?
There's no single answer. The time depends on three numbers:
- Your battery capacity in kilowatt-hours (kWh)
- Your car's onboard charger limit (OBC)
- Your home charger's rated power in kilowatts (kW)
This guide gives you the formula, charging time tables for the most common EVs in Saudi Arabia, factors that affect speed (especially Saudi summer heat), and how to plan your daily charging.
The basic formula
Time (hours) = Energy added (kWh) ÷ Effective charging power (kW)
Simple example: a 60 kWh battery, charging from 20% to 90% = adding 42 kWh. With an 11 kW charger:
`42 ÷ 11 = approximately 3.8 hours`
But that's ideal. Real-world adds 10–15% due to:
- AC-to-DC conversion loss inside the car
- Active battery cooling (especially in Saudi summer)
- Slowdown after 80% (tapered charging)
The golden rule: the car always sets the ceiling
Before any calculation, remember: your car cannot use more power than its onboard charger limit, no matter how big the home charger is.
OBC limit summary for popular EVs in Saudi Arabia:
- Tesla Model 3 / Model Y: 11 kW
- Lucid Air: 19.2 kW
- BYD Atto 3: 7.2 kW
- BYD Seal: 11.5 kW
- Hyundai Ioniq 5 / 6: 11 kW
(More detail in our guide: 7 vs 11 vs 22 kW chargers)
Charging time tables for popular cars (10% to 100%)
The numbers below are based on manufacturer-published battery capacities, assume the charger reaches its full rated power, and reflect moderate weather conditions:
Tesla Model Y Standard Range RWD (60 kWh, LFP, 11 kW OBC)
- 7 kW charger: ~9 hours
- 11 kW charger: ~6 hours
- 22 kW charger: ~6 hours (car is limited to 11 kW)
Tesla Model Y Long Range AWD (75 kWh, 11 kW OBC)
- 7 kW charger: ~11 hours
- 11 kW charger: ~7.5 hours
- 22 kW charger: ~7.5 hours
Lucid Air Pure (88 kWh, 19.2 kW OBC)
- 7 kW charger: ~13 hours
- 11 kW charger: ~9 hours
- 22 kW charger: ~5 hours (uses the full 19.2 kW OBC)
Lucid Air Touring (92 kWh, 19.2 kW OBC)
- 11 kW charger: ~9.5 hours
- 22 kW charger: ~5.5 hours
Lucid Air Grand Touring (117 kWh, 19.2 kW OBC)
- 11 kW charger: ~12 hours
- 22 kW charger: ~7 hours
BYD Atto 3 (60.4 kWh, LFP Blade, 7.2 kW OBC)
- 7 kW charger: ~10 hours
- 11 kW charger: ~10 hours (car is limited to 7.2 kW)
- 22 kW charger: ~10 hours (same reason)
Hyundai Ioniq 5 (72.6 kWh, 11 kW OBC)
- 7 kW charger: ~11 hours
- 11 kW charger: ~7.5 hours (Hyundai's recommended setup)
- 22 kW charger: ~7.5 hours
Note: numbers above are approximations assuming a constant charging rate. Real-world adds 10–15% for conversion loss and cooling.
Pairing a properly-sized home charger with smart charging habits dramatically extends battery health, especially in Saudi conditions. Read EVS’s guide on extending EV battery life in Saudi heat for the charging patterns that matter most during 45°C+ summers and how to avoid early cell degradation.
DC fast charging vs home AC
DC fast chargers at public stations are not limited by the car's OBC (they bypass the car's onboard converter and feed the battery directly):
- Tesla Model Y: up to 250 kW DC (on Supercharger V3)
- Lucid Air: up to 300 kW DC
- BYD Atto 3: 80–110 kW DC
- BYD Atto 3 Evo (next generation): up to 220 kW DC
- Hyundai Ioniq 5: up to 350 kW DC
In practice, home AC charging is the right choice for 90% of daily use. DC is for long trips only, because:
- AC charging is gentler on the battery (extends its lifespan)
- Overnight charging at home means a full battery in the morning, no downtime
- Home charging cost is much lower than public stations
How Saudi heat affects charging speed
Saudi summer hits 40–45°C in Riyadh and Jeddah, and higher in the Eastern Province. This affects charging in specific ways:
Above 45°C: automatic charging slowdown
Battery management systems (BMS) reduce the charging rate to protect the battery from overheating. In very hot conditions, the charger may deliver less than its rated power.
Sustained heat above 29°C: long-term wear
Studies in similar climates (Arizona, Texas) found capacity loss of up to 15% after one year of repeated exposure to high heat.
DC fast charging is more affected
DC fast charging generates more heat inside the battery, so it's more sensitive to ambient temperature. Home AC charging is less heat-sensitive.
How to mitigate
- Charge in covered parking: indoor parking can be 10–15°C cooler than open lots.
- Charge at night: lower ambient temperature, and electricity rates may be more favorable in some regions.
- Use home AC instead of frequent DC: for daily use.
- Avoid daily 100% charging: stick to 80–90% for daily use, and only charge to 100% before a long trip.
Real-world math: your daily pattern in Saudi Arabia
Assume an average daily commute of 80 km (typical for Riyadh). A mid-size EV consumes around 17 kWh per 100 km. So you need to top up roughly 13.6 kWh per day.
How many home-charging hours do you need each day?
- 7 kW charger: ~2 hours
- 11 kW charger: ~1.3 hours
- 22 kW charger: ~40 minutes (for cars that can use it)
Practical takeaway: for normal daily use, even a 7 kW charger is enough. The difference between 7, 11, and 22 kW shows up in:
- Recharging the battery from empty to full after a long trip
- Charging more than one car overnight
- Heavy use (200+ km/day)
When do you actually need DC fast charging?
DC fast makes sense in specific scenarios:
- Inter-city trips: Riyadh → Jeddah (~950 km) or Riyadh → Dammam (~400 km).
- Multi-trip workdays: Uber/Careem or Talabat drivers operating an EV.
- Apartment with no home charger: relying on public charging.
For the typical homeowner, overnight AC charging at home covers 95% of needs, and DC is only for long trips.
Frequently asked questions
Why does the last bit (90% → 100%) take longer?
Tapered charging — the battery accepts fast charging up to ~80%, then reduces the rate to protect the cells in the final stage. The effect is dramatic in DC fast charging, mild in home AC.
Can I leave the car on the charger overnight?
Yes. Modern EVs have a charge management system that automatically stops the current at the configured limit (we recommend 80–90% for daily use).
Does charging time decrease as the battery ages?
No, it increases slightly. As the battery ages, real capacity drops gradually (~2–3% per year in normal use), but the time to charge that remaining capacity stays close to the original numbers.
Do I need a DC charger at home?
No. Home DC chargers are impractical: high cost, require massive electrical infrastructure, and stress the battery without practical benefit. Stick with AC.
How often per week do I need to charge?
For typical Saudi driving (50–100 km/day), 2–3 charging sessions per week with a 7 or 11 kW charger is enough. It depends on your usage pattern and battery size.
Does a smart charger calculate the time for me?
Yes. OCPP-compatible chargers and car apps display the remaining time to the configured limit and let you schedule charging at specific hours (e.g. off-peak).
Summary: what to do
- Know your car's battery (kWh) and OBC rate (kW).
- Calculate your daily top-up: odometer reading × 0.17 kWh/km.
- Divide by your charger's rated power: that's your daily charging hours.
- Schedule charging at night, especially in Saudi summer.
- Use covered parking when possible to reduce heat impact.
Get a tailored home assessment for your needs
Official sources
- Lucid Motors — Charging Your Lucid Air
- Lucid Air Grand Touring — Technical Specs (PDF)
- Tesla — Model Y Specifications
- BYD Atto 3 — Charging Guide — battery 60.4 kWh, OBC 7.2 kW
- Insider EVs — Lucid Air Battery Specs
- IEC 61851 — charging power standard
- SERA — Saudi Arabian Grid Code
Note on numbers: OBC and battery capacity specs vary across model years and trims. For up-to-date figures on a specific car, check the official manufacturer documentation.
