Join Thousands of Satisfied CNS Battery Owners
Are you tired of the anxiety that comes with a degraded EV battery? Does the thought of paying an exorbitant price for an Original Equipment Manufacturer (OEM) replacement make your wallet hurt? You are not alone. Thousands of Nissan Leaf and BMW i3 owners face this dilemma every day.
The good news? There is a smarter, more affordable solution. CNS BATTERY has empowered a global community of drivers to reclaim their vehicle’s range and performance. By choosing a high-performance aftermarket solution, these owners have saved over 50% compared to OEM prices, all without compromising on safety or reliability.
Why Trust CNS BATTERY?
At CNS, we are not just a manufacturer; we are a team of engineers and EV enthusiasts dedicated to solving the #1 problem facing used EV owners: battery degradation. With over a decade of technological accumulation, we have perfected the art of crafting Original EV Powertrains specifically for Nissan and BMW models.
Our secret? We combine the rigorous standards of factory-grade R&D with the affordability of aftermarket innovation. We utilize brand-new, top-tier CATL lithium-ion cells—the same quality found in premium batteries—but at a fraction of the cost. This ensures that when you install a CNS battery, you are not just patching up your car; you are giving it a new lease on life.
The CNS Difference: Quality You Can See
What sets us apart from the competition (and the expensive OEM options) is our obsessive attention to detail. We don’t just assemble cells; we engineer complete systems.
- Unbeatable Warranty: We back our confidence with a 2-year / 80,000 km warranty (whichever comes first). This coverage is significantly longer than what most refurbished battery sellers offer and even surpasses some OEM standards for used parts.
- Zero-Fault Reliability: Our batteries undergo strict quality control to ensure zero failures. We guarantee at least 70% capacity retention over the warranty period.
- Plug-and-Play Perfection: We understand that compatibility is king. Our packs are designed to meet OEM standards for voltage, capacity, and interface matching. Whether you drive a Nissan Leaf ZE0, AZE0, ZE1, or a BMW i3, our battery fits like a glove—no modifications required.
Real Stories from Real Owners
Don’t just take our word for it. The proof is in the thousands of satisfied customers who have already made the switch. Here is what some of them have experienced:
- Mark T. (California, USA) – Nissan Leaf ZE0 62kWh Upgrade: “Replacing my battery with an OEM unit would have cost $16,000—ridiculous! I chose CNS for $7,800. The installation was plug-and-play, and now my full charge range is 430km. The 2-year warranty is incredibly reassuring.”
- Mike’s Auto Service (Vancouver, Canada) – Repair Shop: “As a shop, we replace EV batteries monthly. CNS is our most reliable supplier. Their compatibility assessment is flawless, and we have a virtually zero failure rate. The 2-year warranty is a major selling point for our clients.”
- Lisa K. (Berlin, Germany) – BMW i3: “After my original battery degraded, the dealership wanted €12,000. CNS saved me. The brand-new CATL cells performed perfectly. Even with the sea shipping time, the fumigation-free crate arrived undamaged, and the range jumped from 180km to 290km.”
More Than Just a Battery: A Complete Support System
We know that replacing a high-voltage battery can seem daunting. That is why we have built a support ecosystem to ensure your journey is seamless.
1. Pre-Sales Peace of Mind
Before you buy, we offer a free VIN compatibility assessment. Simply provide your Vehicle Identification Number, and our experts will confirm the perfect fit for your specific model year. This eliminates the risk of buying the wrong part.
2. Installation Made Easy
Whether you are a professional technician or a DIY enthusiast, we have you covered.
- Video Tutorials: Step-by-step HD guides walk you through every bolt and connector.
- Video Call Guidance: Stuck on a step? Schedule a free video call with our engineers for real-time, hands-on help.
- Toolkit: We even provide insulated gloves and cleaning tools to ensure your safety.
3. Lifetime Technical Support
Our relationship doesn’t end at the sale. We offer lifetime technical support. Whether it is optimizing charging in winter or troubleshooting a minor glitch, our team is just an email or call away.
Ready to Join the Movement?
Why settle for a limited range or an empty bank account? Join the thousands of smart EV owners who have upgraded to a CNS BATTERY. Experience the freedom of long-distance driving and the confidence of a robust warranty.
Get Your Free Custom Quote Today
Our process is simple:
- Select your vehicle model.
- Enter your specifications (40kWh, 62kWh, etc.).
- Submit to receive a personalized recommendation and quote.
Let CNS BATTERY put your mind at ease. Click below to start your journey toward a reliable, long-range future.
Get Your Free Custom Quote Now
Frequently Asked Questions (FAQ)
Q1: Are CNS batteries compatible with my specific Nissan or BMW model?
Yes, absolutely. We specialize in Nissan Leaf (ZE0, AZE0, ZE1) and BMW i3 models. To ensure 100% compatibility, we recommend providing your VIN (Vehicle Identification Number) for a free pre-purchase assessment. This confirms that the voltage, capacity, and connectors match your vehicle perfectly.
Q2: How long does the installation take, and do I need a professional?
Installation typically takes 1-2 hours. For a professional technician, it often takes less than an hour. While we provide detailed video tutorials and even video call support for DIYers, we strongly recommend having a certified technician perform the installation to maintain warranty validity and ensure safety.
Q3: What is the warranty coverage for CNS batteries?
We offer an industry-leading 2-year / 80,000 km warranty (whichever comes first). This covers defects in materials and workmanship, including free replacement or repair. We also guarantee that the battery will maintain at least 70% capacity during this period.
Q4: How does the pricing compare to the original manufacturer?
CNS batteries offer exceptional value. You can expect to save over 50% compared to the cost of an OEM replacement battery. You get brand-new CATL cells and a longer warranty for less than half the price of the original factory option.
Q5: Can I get a battery shipped internationally?
Yes, we support international sales to over 50 countries. We handle customs compliance and offer DDP (Delivered Duty Paid) service to most regions. However, due to lithium-ion regulations (UN 3480), shipping times may vary. We recommend contacting our sales team for specific details regarding your country.



