BMW i3 BATTERY

BMW i3 Battery Module Kit 45kWh Long cycle life 300kms New Car Range

Package size & weight:

45kWh battery module:

Module A & Module B & Module C:  768*468*208mm, 65kg.
Module D: 860*468*208mm, 72kg.

For four modules with pallet : 110*100*60cm，275kg

Get a Free Custom Quote

Product Details

Battery module upgrade installation detailed

Installation is very convenient:
If you want to purchase a complete battery pack, just plug and play.
If in a separate battery module, you only need to connect 6 power lines and 1 signal line.

Packing & shipping

Packing:
Transport package: Fumigation-Free Wood Packaging
 
Shipping options:
* By sea;
* Other non-electric products can choose DHL/FeDex/DPEX/EMS and other international express.
 
Shipping Charge:
When you place an order, please contact our sales person and we will check the cost according to the address you provided.
If you have shipping agent, We will deliver to your designated locations in mainland China free of charge.
 
Shipping Time:
* Ocean shipping normally takes 4 to 8 weeks to reach majority of the world, but shipping time is greatly affected by factors beyond our control, like weather, post office delay, custom and etc. We couldn’t guarantee a timely delivery but will perform the best on our side.
* It normally takes around 3-8 business days for DHL/FeDex/DPEX/EMS to arrive at its destination. You can track the current state of your shipment in their websites.
 
Attention:
All orders must be delivered to a valid physical address, in any case, PO box addresses and overseas (APO/FPO/DPO) addresses cannot be shipped.
Please check your shipping address carefully before placing an order, and if your address changes, please notify us before your order is marked “shipped” to avoid package loss. If your order is marked “shipped”, change of address is no longer supported.
In accordance with standard express practice, you need to check the contents of the package before signing for the goods. If you fail to do so, we are not liable for any damage that may occur during transport.

FAQ

Please consult our sales, they will guide you to match the right product and provide fair price.

CNS provides 2 years warranty or 80,000 kms, which ever comes first from the delivery date, both for single modules and full battery pack.


Within 2 years and 80,000 km range, the original capacity indicator 12 bars should not drop to less than 9 bars, after full charge.


The warranty is non-transferable and only applies to the original purchaser of the product.


If the customer does not install according to the operating instructions provided by CNS, the warranty will not cover damages in the vehicle, battery module or battery cell, short circuit and other problems.


For customers who purchase battery packs, if the customer opens the battery packs without CNS’s permission, CNS will no longer be responsible for the warranty.

Please contact us immediately, our after-sales personnel and engineers will assist you to check and solve the problem as soon as possible. If the product is under warranty, we will provide you with relevant accessories/parts for free.

For products that are not in stock or customized, such as battery modules or battery packs, we plan to ship within 20 working days. But during busy periods, the delivery time may be extended a little, we will try to deliver as expected. For other products in stock, they will be shipped within 1-3 working days.

If you need to cancel your order, you must do so within 24 hours of the order to receive a full refund. Please contact us by email to cancel your order immediately.


If you cancel your order after more than 24 hours, CNS will determine whether to give the customer a full refund and the percentage of the refund based on the order processing or production schedule.


Please provide order details, including order number, recipient name and/or email address. We will process your refund and automatically apply the refund to the original payment method within 3 business days.


Orders cannot be canceled after delivery.

If it is not a quality problem, we do not accept any return or exchange.


When you receive the product, you should immediately and thoroughly inspect all items. If you believe that you have received a defective product, please contact us immediately. After confirming the responsibility for the problem, CNS will negotiate with you to replace/exchange the damaged/incorrect product with a similar product or a new product, or give you a full refund (excluding shipping costs).


All shipping charges are borne by the customer by default and are non-refundable. However, depending on the circumstances, CNS may bear the cost of shipping the product back to the customer or reimburse the customer for the reasonable cost of returning the defective product to CNS.

1) If you want to receive your items eagerly, please make notes for which date you wish to receive and mark the email as “urgent”, our customer service will contact you within 24 hours.


2) You can contact us directly and tell us your requests after you placing the order. We will give priority for your order.

If you have any product/technical question, please feel free to contact us. CNS provides customers with lifelong technical support.
CNS provides technical support to customers in the following two ways:


1. Technical/installation/maintenance documents or videos related to the product.


2. Remote video calls.

CNS uses brand new ternary lithium cell, and we usually choose to use CATL brand cells.

First of all, we need to explain that installing battery modules requires you to have certain technical skills and related tools. If you do not have sufficient confidence in this (technology and tools), it is recommended that you buy the battery pack directly, the installation will be simpler and less risky.


If you are fully prepared and willing to purchase battery modules, we will provide you with installation instructions/videos and all wiring harnesses/installation accessories. If you have any questions during the installation process, please feel free to contact our engineers.

Help CENTER

Pre-sales & after-sales service

We are committed to providing you with a comprehensive Nissan Leaf / BMW i3 car battery purchasing experience, from pre-sales consultation to after-sales support, ensuring every step is reliable and professional. This is our customized service designed to give you peace of mind during your purchase.

Before you decide to purchase, we offer a range of free support services to help you understand the product and ensure it meets your needs:

1. Personalized Consultation: Through online chat, phone, or email, our professional consultants will answer your questions about the specifications, range, and charging compatibility of the Nissan Leaf / BMW i3 battery, ensuring the battery is perfectly compatible with your vehicle model (e.g., Leaf 2011-2023 models).

2. Compatibility Assessment: Upload your vehicle information (such as VIN or model year), and we will check the battery compatibility for free to avoid any mismatches after purchase.

3. Detailed Product Demonstration: We provide high-definition videos demonstrating the battery structure, installation steps, and comparisons with original factory batteries, helping you intuitively understand the performance advantages (such as higher capacity and longer lifespan).

4. Transparent Pricing and Calculation: Based on your needs, we provide instant quotes, including battery price, shipping costs, and potential discounts.

These services are designed to address your concerns and ensure everything is transparent and efficient before you make a purchase.

Get a Free Custom Quote

After your purchase, our commitment extends beyond delivery to continuous support and assurance:

1. Installation Guidance and Support: We provide detailed installation manuals and video tutorials to ensure safe installation.

2. Quality Warranty: All batteries come with a minimum 2-year/80,000KM warranty (depending on the model), covering manufacturing defects; free replacement or repair will be provided if any problems occur.

3. Technical Support Hotline: Online support is available to answer your questions regarding battery maintenance, charging optimization, or troubleshooting.

4. Customer Feedback Mechanism: A dedicated account tracks your usage experience, collects feedback, and provides optimization suggestions to ensure the long-term stable operation of your battery.

Choosing us means not only buying a battery but also gaining a reliable partner. Contact us today to start your electric journey!

Get a Free Custom Quote

User reviews

Mark T. (California, USA)
Mark T. (California, USA)
Nissan Leaf ZE0 (2015 model) | 40kWh upgraded to 62kWh
“The original battery in my car lasted 8 years, but the range had dropped to only 120km. Replacing it with an original manufacturer battery would cost $16,000, which was ridiculous! After comparing options, I chose a 62kWh battery from CNS, which cost only $7,800, less than half the price of the original. Before purchasing, I uploaded my VIN for a free compatibility assessment, which confirmed perfect compatibility. After receiving the battery, I installed it following the video tutorial; it was plug-and-play and only took 2 hours. The BMS programming was also successful on the first try. Now, the full charge range is 430km, slightly less than the official 440km, but more than enough for daily commuting, and there's no significant power drain even when using the air conditioning on the highway. I've been using it for almost a year, and the battery capacity is still at 11 out of 12 bars. The 2-year/80,000km warranty is reassuring, and customer service is responsive when I occasionally contact them with maintenance questions.”
Tom H. (Texas, USA)
Nissan Leaf ZE0 (2014 model) | 62kWh
"I used to struggle for ages just to change a car light bulb, so for something as major as changing the battery, I initially wanted to find a professional mechanic. But the installation fee was £800, which I thought was too expensive. CNS customer service sent me an installation video, and I asked a friend (who's into cars) for advice. He said, 'The steps in the video are very detailed, explaining everything clearly from disconnecting the power to programming. You only need basic tools like a wrench and screwdriver, and it should take about 2 hours.' Following the video, it took me 1 hour to remove the old battery (mainly because the fixing screws were a bit tight), and another hour to install the new one. The wiring was very simple (the connectors were color-coded, matching the steps in the video). I encountered a small problem during programming, but I contacted customer service and they guided me remotely for 5 minutes, and the problem was solved. Now the full charge range is 430km, 200km more than before. The installation was a bit tiring, but I saved a lot of money. Even if you're not technically inclined, you can easily do it yourself with the help of someone who knows a little about cars and by following the video!"
Lisa K. (Berlin, Germany)
Lisa K. (Berlin, Germany)
BMW i3 (2017 model) | 45kWh
‘’After the original battery degraded, the 4S dealership quoted €12,000 for a replacement. My friend recommended CNS, so I decided to give them a try. Unexpectedly, the brand-new CATL battery cells were of the same quality as the original. When I encountered wiring connection problems during installation, I contacted customer service, and they arranged remote video guidance within an hour. The engineer guided me through the wiring step by step, making it completely hassle-free. Now, the full charge range has increased from the original 180km to 290km, and I only need to charge it once a week for daily commuting. The sea shipping took 6 weeks, and the packaging was a fumigation-free wooden crate, so the battery arrived without any damage. The most surprising thing is the lifetime technical support. Last month, I consulted about winter charging optimization, and customer service directly sent me a customized guide. The value for money is incredible!‘’
David L. (London, UK)
Nissan Leaf ZE1 (2021 model) | 62kWh
"Previously, I tried to save money by replacing my battery with a refurbished one, but it swelled up after only six months, and the range dropped drastically. I was considering buying a new car, but a friend who works in car repair told me that replacing the battery would be much cheaper than buying a new car. He strongly recommended CNS BATTERY. After listening to my friend's advice and replacing my battery with a 62kWh CNS battery, I realized the difference that brand-new CATL battery cells make! The full charge range is 440km, consistent with the specifications, and the charging speed is the same as the original. It feels like my car has been revived! Haha. Before the purchase, they performed a VIN compatibility check to confirm that it wouldn't affect the original car warranty. The installation technician said the wiring connectors were a perfect match for the original factory parts, requiring no modifications. Most importantly, the price was only $8200, saving me nearly $10,000 compared to the original manufacturer's price. The 2-year warranty also provides peace of mind. I highly recommend it!"
Mike's Auto Service (Vancouver, Canada)
Mike's Auto Service (Vancouver, Canada)
Repair shop procurement | Compatible with multiple Leaf ZE1/ZE0 models
"As a repair shop, we replace electric vehicle batteries for our customers every month, and CNS is currently our most reliable supplier. Their batteries have excellent compatibility, covering all Leaf ZE0/AZE0/ZE1 models, and they also support OEM customization. What's most convenient is their pre-sales compatibility assessment; after the customer provides the VIN, they can confirm the matching solution within one day, avoiding order errors. The batteries use brand-new CATL cells, resulting in an almost zero failure rate. Customer feedback indicates that the range meets the stated specifications, and the 2-year/80,000km warranty is longer than other brands. Now, all our Leaf battery replacement orders use CNS BATTERY."
Javier R. (Paris, France)
Nissan Leaf ZE0 (2014 model) | 68kWh
"The original battery had degraded to only 80km of range. After replacing it with a CNS 68kWh battery, the full charge now provides 470km of range, and even in cold winter conditions, it maintains around 400km, which is perfectly sufficient for long-distance travel. I installed it myself; the video tutorial was very detailed, and connecting the 6 power lines and 1 signal line was straightforward with no errors. The only drawback was that sea shipping took 8 weeks; if you need your car urgently, I recommend choosing the expedited service. The battery weight is similar to the original one, and the handling hasn't been affected. I've been using it for 10 months, and I can see the battery health status in real-time. The 2-year/80,000km warranty is more substantial than many other brands, making it incredibly cost-effective."
Thomas B. (Amsterdam, Netherlands)
Nissan e-NV200（2022 款）| 50kWh
"My old car battery was 5 years old and had degraded to the point where it could only travel 150km, requiring daily charging, which was very inconvenient. I replaced it with a 50kWh battery from CNS, and the installation was surprisingly simple. The complete battery pack was plug-and-play; it automatically matched the system after plugging in the connector, without any additional steps. Now, the full charge consistently provides 348km of range, and even with the air conditioning on during highway driving in the summer, the range never dropped below 330km, which is much better than the old battery. Last month, I went to the beach, and even in the high temperature of 38℃, the battery didn't experience any overheating protection issues; the discharge was very stable. The seller also provided a free installation toolkit, including insulated gloves and terminal cleaner, which was very thoughtful. After two months of use, the battery capacity is still at 12 bars, and the after-sales service even sent a battery maintenance manual explaining how to extend its lifespan – truly professional! Thank you, CNS team!"
EK Auto Repair (Rome, Italy)
Repair shop supplies | Compatible with multiple Leaf models + BMW i3
‘’Our shop specializes in electric vehicle repair, and we've been cooperating with CNS for almost two years, having purchased over 30 battery packs from them. The biggest advantage of their batteries is their strong compatibility; they work perfectly with Leaf ZE0/AZE0/ZE1 and BMW i3 models, and they also support OEM customization to meet the specific needs of some customers. The quality of their CATL brand new battery cells is excellent, with virtually zero failure rate, and customer feedback indicates that the range meets the advertised specifications. After-sales service is very responsive; last time a customer encountered a BMS programming issue during installation, and an engineer provided remote video guidance, resolving the problem in just one hour. Although logistics take 4-8 weeks, the packaging is very robust, and there have never been any instances of damage. The price is 50% lower than the original manufacturer, and the 2-year warranty is longer than other brands. Customer satisfaction is very high, and we will continue to cooperate with them!‘’

Advantages of CNS automotive batteries

Comparison dimensions

CNS BATTERY

Numerous brands

Original factory battery

Battery cell quality

Utilizes brand-new, original battery cells from CATL (manufactured by China's largest battery factory, offering top-tier performance and safety).

Discarded batteries are being repaired and reused, despite the fact that the battery cells are aged and their performance has severely degraded.

The battery cells are supplied by the original manufacturer, guaranteeing quality but offering no additional technological advantages.

Battery life

Stable and durable, with a lifespan far exceeding that of refurbished batteries, suitable for long-term use.

The battery life is significantly shortened, and problems such as swelling, power failure, and a sudden drop in battery life are likely to occur.

Stable lifespan, meeting original vehicle factory standards.

Warranty Coverage

24-month/80,000-kilometer official warranty, far exceeding the warranty standards of most original car batteries, ensuring worry-free use.

There is no clear warranty or the warranty period is extremely short (26 months/60,000 kilometers), making it difficult to seek redress in case of malfunction.

Standard warranty (usually shorter than 80,000 kilometers), with limited coverage.

Price advantage

For only about 50% of the price of an original manufacturer battery, you can enjoy a quality experience twice as good as that of a refurbished battery.

The price is high, usually 70%-80% of the original manufacturer's price, but the cost-effectiveness is extremely low (due to frequent repairs/high replacement costs).

The price is expensive, including a brand premium, and the value for money is poor.

Core advantages

The best choice for value for money, combining brand-new battery cell quality, extended warranty, and an affordable price.

Lack of core competitive advantages, posing numerous potential risks.

Strong brand endorsement, suitable for users who prefer original, factory-matched parts.

Customize your Nissan/BMW battery solution – Get a free quote!

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2. Enter your specifications preferences;
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CNS EV BATTERY

Original equipment manufacturer (OEM) compatible, saving 50%+ in costs.

Specializing in Nissan/BMW automotive batteries, defining reliability with expertise - we have deep expertise in the battery field for the entire Nissan/BMW model range, providing original factory-grade precise adaptation solutions for every vehicle.

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