BMW iX3 Battery Size Explained: Capacity, Charging Times

If you're searching for "how many kW is the iX3 battery," here's the short answer: the BMW iX3 sold from 2020 to 2025 (G08) has a battery of 80 kWh gross and roughly 74 kWh usable. The next-generation Neue Klasse iX3, unveiled in late 2025, has 108.7 kWh usable. But that question really hides two separate ones: how much energy does the battery store (kWh), and how fast can the car charge (kW)? In this guide we cover both generations with hard numbers, then work out charging times, range and approximate costs in Turkish lira.

First, let's clear this up: kW or kWh?

These are the two units people mix up most often. Getting them right is the first step to understanding how the iX3 really performs:

kWh (kilowatt-hour): The amount of energy the battery stores, i.e. the "size of the tank." This is the figure that determines range.
kW (kilowatt): Power. It describes both how much power the motor produces and how quickly the battery can be charged. Think of it as the "flow rate" filling the tank.

So technically, the right way to ask "how many kW is the iX3 battery" is "how many kWh." The charging power the battery accepts matters too: the original iX3 tops out at 150 kW on DC, while the new iX3 goes up to 400 kW.

Original BMW iX3 (G08, 2020-2025): battery specs

The first-generation iX3 was a rear-wheel-drive electric SUV built in China on BMW's fifth-generation eDrive technology. It was sold in Turkey through Borusan Otomotiv, which is why it's the iX3 you'll see most often on the used market.

Battery and power figures

Gross capacity: 80 kWh
Net (usable) capacity: approx. 74 kWh
Motor output: 210 kW (286 hp), 400 Nm of torque
Drivetrain: Rear-wheel drive, single motor
WLTP range: approx. 450-460 km (facelifted 2021 "Impressive" versions sit near the top end)
WLTP consumption: approx. 18.5-19.5 kWh/100 km

The roughly 6 kWh gap between gross and net capacity is a buffer reserved to protect the battery. Drivers can't access it, so range calculations should always use the usable figure.

Charging power and times

AC charging: Up to 11 kW (three-phase). About 7.5 hours from 0 to 100%.
DC fast charging: Up to 150 kW. About 32-34 minutes from 10 to 80%.

The 150 kW peak only appears at low states of charge and at the right battery temperature. Above 50%, power tapers off gradually, which is why charging between 10% and 80% is the most efficient approach on road trips.

New BMW iX3 (Neue Klasse): battery specs

BMW unveiled the new iX3, the first model on its Neue Klasse platform, at IAA Munich in September 2025. It's built at the Debrecen plant in Hungary, and European deliveries began in 2026. The name stayed the same, but technically it's an entirely different car.

Battery and power figures (iX3 50 xDrive)

Net capacity: 108.7 kWh
Battery technology: Sixth-generation eDrive, cylindrical cells, 800-volt architecture
System output: 345 kW (469 hp), dual motor, all-wheel drive
WLTP range: Up to 805 km
DC fast charging: Up to 400 kW
10-80% charging time: approx. 21 minutes
Range added in 10 minutes: approx. 370 km (WLTP), according to BMW

An 800-volt architecture means delivering the same power at lower current. That generates less heat in the cables and cells, so high charging power can be sustained for longer. It's the reason the new iX3 can fill a battery roughly 47% larger than its predecessor's in less time.

Comparison table: old vs. new iX3

Spec	iX3 (G08, 2020-2025)	New iX3 50 xDrive (Neue Klasse)
Usable battery capacity	~74 kWh	108.7 kWh
Gross battery capacity	80 kWh	Quoted as net only
Voltage architecture	~400 V	800 V
Motor output	210 kW (286 hp)	345 kW (469 hp)
Drivetrain	Rear-wheel drive	All-wheel drive (xDrive)
WLTP range	~450-460 km	Up to 805 km
Max DC charging power	150 kW	400 kW
10-80% DC time	~32-34 min	~21 min
Max AC charging power	11 kW	11 kW (standard)
Built in	Shenyang, China	Debrecen, Hungary

How does iX3 battery capacity translate into real-world range?

WLTP figures are measured in a lab. Real-world driving in Turkey varies with the season, speed and type of road. The general trends:

City driving, mild weather: Thanks to regenerative braking, you can get close to WLTP figures, sometimes even better.
Motorway at 120 km/h: Consumption rises with aerodynamic drag. Real range usually lands around 70-80% of WLTP.
Winter (0 °C and below): Cabin heating and cold battery chemistry can cut range by up to 20-30%. A heat pump reduces this loss.

A rough example: on the motorway, the original iX3 consumes 21-23 kWh/100 km, so its 74 kWh usable battery gives roughly 320-350 km. If the new iX3 stays around 18-20 kWh/100 km in similar conditions, 540-600 km from 108.7 kWh is a reasonable expectation. Independent long-term tests of the new model are still limited, so treat these figures as estimates.

iX3 charging costs in Turkey (in TL)

Charging cost depends on three things: how much energy goes into the battery, the price per kWh and charging losses. As of 2026, public AC charging in Turkey typically costs around 9-10 TL/kWh, and DC fast charging around 12-15 TL/kWh. Home electricity is much cheaper, even with tiers and taxes. In the calculations below we assumed 3.5 TL/kWh for home charging; swap in the unit price from your own bill.

Scenario	Original iX3 (74 kWh)	New iX3 (108.7 kWh)
Home, 0-100% (3.5 TL/kWh)	~260 TL	~380 TL
Public AC, 0-100% (9.5 TL/kWh)	~700 TL	~1,030 TL
DC, 10-80% (13.5 TL/kWh)	~52 kWh → ~700 TL	~76 kWh → ~1,030 TL
Cost per 100 km, DC (20 kWh/100 km)	~270 TL	~270 TL

These figures don't include charging losses. With AC charging, about 8-10% of the energy drawn from the grid is lost as heat; DC losses are lower. Your actual bill may come out slightly higher than the table.

The last row makes an important point: cost per 100 km is driven by consumption, not battery size. A bigger battery costs more per full charge but takes you further, so the cost per kilometre stays about the same.

Watch out for idle fees

Many charging operators in Turkey charge a per-minute idle fee if your car stays plugged in after charging has finished. Especially at DC stations, keeping an eye on the "charging complete" notification in the app helps you avoid unnecessary costs.

Practical tips for a longer battery life

Whether you drive the old or new iX3, the habits that extend lithium-ion battery life are the same:

Set an 80% limit for daily use. You can set a charging target from the iX3's menu and the My BMW app. Charging to 100% before a long trip is fine.
Use DC when you need it. Fast charging isn't harmful, but constant high-power charging heats the cells more than home charging does.
Precondition in winter. When you enter a DC station as a navigation destination, the car warms the battery so charging starts at a higher power level.
Don't leave the battery near 0% or at 100% for long periods. If the car will be parked for a while, 50-70% is ideal.

BMW typically offers an 8-year or 160,000 km warranty on the iX3's high-voltage battery. If capacity drops below a set threshold within that period, it's covered. When buying used, always check how much warranty is left and ask for a battery health report from an authorised service centre.

What to check on the battery when buying a used iX3

Almost every iX3 on Turkey's used market is the G08 generation. Here's what to look at battery-wise:

Model year and version: Facelifted cars from 2021 onward received efficiency improvements through software updates.
Charging history: Cars charged mostly on DC may lose capacity somewhat faster. Authorised service records can show this.
Real-world range test: Compare the displayed range at 100% with the WLTP figure, keeping in mind that the display bases its estimate on recent driving style.
DC charging test: If a short DC session at a low state of charge goes above 100 kW, the battery and cooling system are most likely healthy.

Frequently Asked Questions

How many kWh is the BMW iX3 battery?

The iX3 sold from 2020 to 2025 (G08) has an 80 kWh gross and roughly 74 kWh usable battery. The new iX3 50 xDrive on the Neue Klasse platform has 108.7 kWh usable.

How many kW does the iX3 accept on DC charging?

The original iX3 charges at up to 150 kW and goes from 10% to 80% in about 32-34 minutes. Thanks to its 800-volt architecture, the new iX3 reaches up to 400 kW and completes 10-80% in about 21 minutes. To hit these speeds, the charging station must also be able to deliver that power.

How long does the iX3 take to charge at home?

Both generations accept 11 kW AC as standard. The original iX3 charges from 0 to 100% in about 7.5 hours on a three-phase 11 kW wallbox. The new iX3's larger battery takes about 10-11 hours at the same power. On a single-phase 3.7 kW connection, these times more than double.

How much does a full iX3 charge cost?

Assuming a home rate of 3.5 TL/kWh, the original iX3 costs about 260 TL to fill and the new iX3 about 380 TL. At public AC stations at around 9.5 TL/kWh, those figures rise to about 700 TL and 1,030 TL respectively. The exact amount depends on the operator's tariff and charging losses.

Conclusion

The answer to "how big is the iX3 battery" depends on which generation you're looking at. The original iX3, with its 74 kWh usable battery, 150 kW DC charging and around 450 km of WLTP range, is a well-balanced car for both city and highway driving. The new Neue Klasse iX3 moves to the top of its segment with a 108.7 kWh battery, 400 kW charging power and more than 800 km of WLTP range. For both models, what really drives cost per kilometre is consumption and where you charge. Using AC at home and DC in the 10-80% window on the road protects both your budget and your battery. When planning a trip, you can find AC and DC charging points along your route on the map in the ADZE Charge app.

Cover image: Damian B Oh — CC BY-SA 4.0 — https://commons.wikimedia.org/wiki/File:BMW_G08_LCI_iX3_M_Sport_Mineral_White_Metallic_(9).jpg

BMW iX3 Battery Size Explained: Capacity, Charging Times and Costs for Both Generations