Nissan Leaf battery cell size: technical parameters and compatibility

Nissan Leaf is one of the most popular electric vehicles in the world, but its battery requires special attention. Owners are often faced with the question: which cell size used in different generations of the model, and how this affects compatibility when replacing. In this article we will analyze the technical nuances, compare the parameters of cells for batteries with a capacity 24 kWh, 30 kWh, 40 kWh And 62 kWh, and also give practical recommendations on selection and installation.

Battery Nissan Leaf consists of modules, and those - of individual cells. Their physical dimensions and electrical characteristics depend on the vehicle generation and battery type. For example, cells for 24 kWh And 30 kWh visually similar, but have different energy content and internal design. If you're considering a repair or upgrade, it's important to understand these differences to avoid mistakes when purchasing parts.

What cells are used in the Nissan Leaf: types and generations

Batteries Nissan Leaf the first and second generations are equipped with lithium-ion cells from the manufacturer Automotive Energy Supply Corporation (AESC). These cells have a unique shape and size that differs from standard ones 18650 or 21700, which are used in other electric vehicles. Main types:

• 🔋 LEL (Laminated Energy Lithium) — cells for batteries 24 kWh And 30 kWh (2011–2017). They have a flat laminated design.
• 🔋 LEV50/LEV50N - improved battery cells 40 kWh (2018–2022) and 62 kWh (since 2019). Higher energy capacity and heat resistance.
• 🔋 LEV60 - the latest cells for Leaf e+ (62 kWh), optimized for fast charging.

Cells LEL And LEV50 similar in appearance, but not interchangeable due to different chemical compositions and voltages. For example, the rated cell voltage LEL — 3.7 V, and LEV50 — 3.8 V. This is critical when assembling the module, since a mismatch can lead to uneven wear or BMS malfunctions (Battery Management System).

Physical dimensions of cells: comparison of models

Cell sizes Nissan Leaf standardized within one generation, but differ between different battery types. Below is a table with the main parameters:

Cell type	Battery capacity	Dimensions (L×W×H), mm	Cell weight, g	Rated voltage, V
LEL	24/30 kWh	210 × 148 × 7.5	~450	3.7
LEV50	40 kWh	210 × 148 × 8.0	~480	3.8
LEV50N	62 kWh (Leaf e+)	215 × 150 × 8.2	~520	3.8

As can be seen from the table, cells LEV50N for 62 kWh slightly larger and heavier, which is associated with increased energy intensity. At the same time thickness cells increased by only 0.5–0.7 mm, which allows them to be used in the same modular housings, but with modified fasteners. Important: when replacing cells in the battery 24 kWh on LEV50 BMS will need to be re-flashed for correct balancing.

⚠️ Attention: Battery cells 40 kWh And 62 kWh have different connectors for temperature sensors. Please ensure compatibility before purchasing!

How many cells are in the Nissan Leaf module and battery?

Battery Nissan Leaf consists of modules, and each module consists of pairs of cells connected in series. The number of cells depends on the battery capacity:

• 🔢 24 kWh: 48 modules × 2 cells = 96 cells (system voltage: 364.8 V).
• 🔢 30 kWh: also 96 cells, but with increased energy capacity of each.
• 🔢 40 kWh: 192 cells (96 pairs), voltage 374.4 V.
• 🔢 62 kWh: 288 cells (144 pairs), voltage 374.4 V.

Modules in the battery 24/30 kWh are grouped by 4 pieces into “clusters”, and in 40/62 kWh - 8 each. This affects the complexity of disassembly: for example, to access cells in 62 kWh More fasteners will need to be removed. When replacing individual cells, it is recommended to replace them in pairs (modulo) to avoid voltage imbalance.

Why can’t you mix cells of different capacities?

Mixing cells of different capacities (eg LEL and LEV50) will cause the lower capacity cells to overcharge or discharge below safe levels. This shortens battery life and can cause thermal runaway. The BMS is not always able to compensate for such differences, especially in long-range batteries.

How to determine cell wear and whether replacement is necessary?

Over time, the cell capacity Nissan Leaf decreases due to the degradation of lithium-ion cells. Main signs of wear:

• 📉 Reduced power reserve by 20–30% of the original (for example, with 160 km to 110 km on 24 kWh).
• ⚡ Fast discharge at low temperatures (in winter, the power reserve drops by more than 50%).
• ⚠️ Errors appear P3170 or P3177 on the dashboard (battery fault).
• 🔥 Uneven heating of the modules (can be checked with a thermometer after charging).

For diagnostics use:

1. Scanner OBD-II with support Nissan Leaf (For example, Leaf Spy Pro).
2. Voltage measurement on each pair of cells (must be within 3.7–4.1 V for LEL).
3. Capacity test using a discharge device (if the voltage drops below 3.0 V under load, the cell must be replaced).

⚠️ Attention: If the voltage difference between cells in one module exceeds 0.1 V, this indicates critical imbalance. In this case, balancing or replacement of problematic cells is required.

Where to buy cells for Nissan Leaf and what to look for?

Cells for Nissan Leaf can be purchased:

• 🛒 Official Nissan dealers - original cells, but at a high price (from 15 000 ₽ per module).
• 🌍 Foreign suppliers (For example, eBay, AliExpress) - cheaper, but there is a risk of running into a fake.
• ♻️ Used cells from disassembled batteries - a budget option, but requires careful checking.
• 🔧 Specialized workshops — often offer refurbished modules with a guarantee.

When purchasing, pay attention to:

1. Marking: original cells have logo AESC and serial number.
2. Production date: Cells older than 3 years may have reduced capacity.
3. Contact status: Oxidation or deformation indicates improper storage.
4. Voltage check: all cells in a batch must have the same voltage (±0.05 V).

Cells labeled "Nissan 295A" are only suitable for 24/30 kWh batteries, and "Nissan 320A" are suitable for 40 kWh batteries. You can't confuse them!

Step-by-step instructions for replacing cells in a Nissan Leaf

Replacing cells is a labor-intensive process that requires care and compliance with safety precautions. Below are simplified instructions (for experienced users):

1. Battery disconnection: Remove the negative terminal from the 12V battery and wait for the high-voltage capacitors to discharge (at least 10 minutes).
2. Removing the battery: Remove the underbody protection, disconnect the BMS connectors and the power cable. The battery weighs 200–300 kg — use the lift!
3. Disassembling the module: Carefully disassemble the plastic housing of the module, avoiding damage to the temperature sensors.
4. Replacing cells: Install new cells, observing polarity. Use thermal paste for better heat transfer.
5. Assembly and balancing: Connect the BMS and perform the balancing procedure using Leaf Spy Pro or a dealer scanner.

⚠️ Attention: When working with a high voltage battery, use isolated tools and gloves. The system voltage exceeds 300 V - this is deadly!

Common mistakes when replacing cells and how to avoid them

Even experienced technicians make mistakes when working with batteries. Nissan Leaf. Let's look at the most common ones:

• ❌ Ignoring balancing: After replacing cells, be sure to carry out the balancing procedure through Leaf Spy Pro or dealer equipment. Otherwise, the BMS will calculate the charge incorrectly.
• ❌ Using non-original temperature sensors: Temperature sensors must be compatible with your version of BMS. A mismatch will result in false overheating errors.
• ❌ Incorrect tightening of fasteners: Tightening too tightly can deform the cells, while tightening too weakly can lead to vibration and damage.
• ❌ Replacing only one cell in a module: Always change cells in pairs to avoid imbalance.

Another typical problem is incorrect BMS calibration after replacement. If the system “does not see” new cells, you may need to reset errors via CONSULT-III Plus or similar equipment. In some cases, fully discharging/charging the battery helps, but this is risky for new cells.

FAQ: Frequently asked questions about Nissan Leaf cells

Is it possible to install cells from 40 kWh into a 24 kWh battery?

Technically yes, but it will require modification of the BMS and flashing of the controller. Cells LEV50 have a different voltage (3.8 V against 3.7 V at LEL), so without modifications this will lead to errors. In addition, the physical dimensions of the cells are slightly different, which may require changing the fasteners.

How much does it cost to replace all cells in a Nissan Leaf?

The cost depends on the battery capacity and cell source:

• 💰 24 kWh: 80 000–120 000 ₽ (with work).
• 💰 40 kWh: 150 000–200 000 ₽.
• 💰 62 kWh: 250 000–350 000 ₽.

Using used cells can reduce the price by 30-50%, but reduces the warranty.

How to increase the service life of cells?

To extend battery life:

• 🔌 Avoid deep discharge (keep charge within range 20–80%).
• ❄️ Do not leave your car in the cold with a low charge (below 40%).
• ☀️ Park in the shade in summer - overheating accelerates degradation.
• 🔄 Perform balancing regularly (once every 3 months).

What should I do if error P3170 appears after replacing the cells?

Error P3170 indicates a faulty battery or BMS. Possible reasons:

1. Incorrect connection of temperature sensors.
2. Voltage imbalance between modules (more than 0.2 V).
3. Cells are incompatible with the BMS version.

Solution: check the connections, perform balancing and reset the error via Leaf Spy Pro or a dealer scanner. If the error persists, BMS firmware may be required.

Is it possible to assemble a battery yourself from Tesla cells for a Nissan Leaf?

Theoretically possible, but highly not recommended. Cells Tesla (For example, 21700) have different sizes, voltage and control system. You will need:

• 🔧 Complete redesign of the battery case.
• 🖥️ Replacing BMS with custom firmware.
• ⚡ Re-soldering of all connections and temperature sensors.

Such modification voids the warranty and may be dangerous. It is better to use original cells AESC.