Revitalize Your BMW i3: The Cost-Effective Battery Upgrade That Doubles Your Range
Tired of Short Ranges and Sky-High Replacement Costs?
Imagine cruising confidently with 290km of range instead of struggling with a mere 180km. That’s the reality for BMW i3 owners who’ve upgraded to CNS Battery’s premium conversion kits. If you’re frustrated with your aging battery’s shrinking range and the exorbitant cost of factory replacements, you’ve found the solution.
Why BMW i3 Owners Are Switching to CNS Battery
When your BMW i3’s battery degrades, most owners face a painful choice: pay $12,000+ for an OEM replacement or accept reduced range. CNS Battery offers a smarter path forward with brand-new CATL lithium cells at just 50% of the factory price.
Our 45kWh, 50kWh, and 62kWh battery conversion kits deliver:
- True range extension (up to 290km from the original 180km)
- Plug-and-play installation for complete battery packs
- No modifications needed to your vehicle’s system
- 2-year/80,000km warranty – longer than most competitors
- Seamless compatibility with all BMW i3 models
The CNS Advantage: Quality Without the Premium Price
Unlike refurbished batteries that swell and fail within months, CNS uses brand-new CATL battery cells – the same quality as BMW’s original supplier. This means:
- No unexpected swelling or safety concerns
- Consistent performance in all weather conditions
- Real-world range matching manufacturer specifications
- Longer lifespan than typical aftermarket alternatives
Our Berlin-based BMW i3 owner Lisa K. shared: “After the original battery degraded, the 4S dealership quoted €12,000. CNS provided a brand-new CATL battery at a fraction of the cost. Now, my full charge range has increased from 180km to 290km, and I only need to charge it once a week.”
Effortless Installation, Professional Support
The installation process is designed for both DIY enthusiasts and professional mechanics:
- Complete battery packs: Simply plug and play
- Battery modules: Connect just 6 power lines and 1 signal line
- Detailed video tutorials available for every step
- Remote technical support via video call
As noted by our Canadian repair shop partner Mike’s Auto Service: “The wiring connectors were a perfect match for the original factory parts, requiring no modifications. The installation was straightforward, and the range meets the stated specifications.”
Why Choose CNS Over Factory Replacement?
| Feature | CNS Battery | Factory Replacement |
|---|---|---|
| Price | 50% of OEM cost | $12,000+ |
| Battery Cells | Brand-new CATL | Original manufacturer |
| Warranty | 2 years / 80,000km | Typically 1-2 years |
| Installation | Plug-and-play or simple module connection | Requires dealership service |
| Range | Consistent with specs (290km+) | Matches original specs |
Real Results from Real BMW i3 Owners
“I was skeptical about aftermarket batteries, but the CNS 45kWh battery exceeded my expectations. The full charge range is now 290km, and I only need to charge it once a week. The sea shipping took 6 weeks, but the packaging was robust and the battery arrived without damage. The lifetime technical support is incredible!” – Lisa K., Berlin, Germany
“After replacing my BMW i3 battery with CNS, the range increased from 180km to 290km. The installation was straightforward with the detailed video guide. The customer service team provided remote video assistance when I encountered a minor wiring issue – resolved in just 5 minutes!” – Thomas B., Amsterdam, Netherlands
Frequently Asked Questions
Is the CNS battery compatible with all BMW i3 models?
Yes, our battery conversion kits are designed for all BMW i3 models (2013-2020). We provide a free compatibility check with your VIN before purchase to ensure perfect fit.
How long does installation take?
Complete battery packs require just 2 hours for installation (plug-and-play). For battery modules, expect 2-3 hours with the included wiring harness and detailed instructions.
What’s included in the package?
- Battery pack or modules (45kWh, 50kWh, or 62kWh)
- Wiring harness for module installation
- Detailed installation manual
- Technical support via phone, email, or video call
How does the warranty work?
We offer a 2-year or 80,000km warranty, whichever comes first. The original capacity indicator (12 bars) should not drop below 9 bars during this period. The warranty covers manufacturing defects but excludes damage from improper installation.
What shipping options are available?
- Ocean shipping: 4-8 weeks to most destinations
- Express shipping: DHL/FedEx/DPEX/EMS (3-8 business days)
- Fumigation-free wood packaging for safe international transport
Stop Paying for Range Anxiety – Get Your BMW i3 Range Back
Your BMW i3 deserves better than a degraded battery that limits your driving freedom. With CNS Battery’s premium conversion kits, you can enjoy extended range, reliable performance, and significant cost savings – all backed by our industry-leading warranty and support.
Don’t waste another day with limited range. The upgrade that transforms your driving experience is just a few clicks away.
Ready to Transform Your BMW i3?
Get your custom quote today and discover how much you can save on a battery that actually delivers on its promise.


