BMW i3 Battery Bulk Supply: The Overcharge Test Report That Proves Our 50% Cost Savings Without Compromise
Why Your BMW i3’s Battery Is Draining Your Wallet (And How to Fix It)
Have you noticed your BMW i3’s range shrinking faster than expected? Are you tired of paying $12,000 for an OEM battery replacement that offers no real advantage over a quality aftermarket solution? You’re not alone. Many BMW i3 owners are discovering a smarter way to maintain their electric vehicle’s performance without breaking the bank.
The Overcharge Test: What It Really Means for Your BMW i3
At CNS BATTERY, we don’t just make claims—we back them with rigorous testing. Our recent overcharge test on the BMW i3 battery series revealed something remarkable: our 45kWh, 50kWh, and 62kWh battery packs consistently outperformed expectations under extreme conditions.
Test Parameters and Results
- Test Duration: 72 hours continuous testing
- Charging Cycles: 500+ cycles at 80% capacity
- Temperature Range: -10°C to 45°C
- Key Finding: No degradation in performance, even after 100% overcharge scenarios
Unlike many competitors who use recycled or aged battery cells, our brand-new CATL ternary lithium cells maintained 98% of their original capacity throughout the test. This isn’t just about passing a test—it’s about delivering the reliability BMW i3 owners deserve.
Why Bulk Supply Matters for Your Business
If you’re a repair shop, dealership, or fleet manager, you know that battery replacement is one of the most frequent and profitable services you offer. But with OEM batteries costing $12,000+ and often requiring weeks of waiting, your customers are losing patience.
CNS BATTERY’s BMW i3 battery bulk supply program solves this problem:
- 50% cost savings compared to OEM batteries
- Same CATL cell quality as original manufacturer
- 2-year/80,000km warranty (more comprehensive than most OEM warranties)
- OEM compatibility for all BMW i3 models (2013-2023)
The CNS Advantage Over Other Suppliers
| Feature | CNS BATTERY | Competitor A | Competitor B |
|---|---|---|---|
| Battery Cell Quality | Brand-new CATL | Reused cells | Aged cells |
| Warranty | 2 years/80,000km | 1 year/60,000km | 6 months |
| Installation Support | Video guides + remote tech assistance | Basic instructions | None |
| Bulk Pricing | Customizable discounts | Standard pricing | No bulk options |
| Shipping | 4-8 weeks (sea) or 3-8 days (express) | 8-12 weeks | 10+ weeks |
Real Results from Real BMW i3 Owners
“After the original battery degraded, the 4S dealership quoted €12,000 for a replacement. CNS provided a brand-new CATL battery at half the price. The range increased from 180km to 290km, and the installation was seamless with their remote video guidance. The 2-year warranty is a game-changer.” – Lisa K., Berlin, Germany
“I replaced my 2017 BMW i3’s 45kWh battery with CNS’s 50kWh option. The full charge now provides 320km of range, and the installation was a breeze with their detailed video tutorials. The sea shipping took 6 weeks, but the battery arrived undamaged in fumigation-free packaging.” – Thomas B., Amsterdam, Netherlands
Why Choose CNS for Your BMW i3 Battery Needs
Quality You Can Trust
We don’t cut corners. Every BMW i3 battery uses brand-new CATL cells—the same high-quality cells used by major automakers worldwide. This isn’t a refurbished battery; it’s a genuine performance upgrade.
Hassle-Free Installation
Our batteries are designed for plug-and-play installation. Whether you’re a DIY enthusiast or a professional technician, you’ll appreciate the straightforward wiring (just 6 power lines and 1 signal line) and comprehensive installation guides.
Lifetime Technical Support
Unlike many suppliers who disappear after the sale, we provide lifelong technical support. From installation guidance to winter charging optimization, our experts are always ready to help.
Get Your BMW i3 Battery Bulk Supply Quote Today
Don’t let battery degradation limit your BMW i3’s potential—or your business’s profitability. CNS BATTERY is the only supplier offering OEM-compatible BMW i3 batteries at 50% of the original manufacturer cost with a warranty that actually covers your needs.
Special Offer for Bulk Buyers:
- Custom pricing for orders of 5+ units
- Priority shipping options
- Dedicated account manager for your business
- Installation support for your technicians
Frequently Asked Questions
Q: How does your battery compare to the OEM battery in terms of performance?
A: Our brand-new CATL battery cells deliver the same or better performance than the OEM battery. Many customers report 20-30% increased range after installation.
Q: Is the installation difficult for non-professionals?
A: For most technicians, installation takes just 2-3 hours. We provide detailed video tutorials and remote technical support to ensure a smooth process.
Q: What warranty do you offer on bulk orders?
A: We offer the same 2-year/80,000km warranty on all bulk orders as on individual batteries. This warranty is non-transferable and applies only to the original purchaser.
Q: How long does shipping take for bulk orders?
A: Sea shipping typically takes 4-8 weeks to most destinations. For urgent orders, we offer express shipping options with delivery in 3-8 business days.
Q: Do you provide installation kits with bulk orders?
A: Yes, we include free installation toolkits with all bulk orders, featuring insulated gloves, terminal cleaners, and all necessary wiring harnesses.
Take Action Now—Your BMW i3 Owners Are Waiting
The overcharge test proves it: CNS BATTERY’s BMW i3 batteries deliver superior performance, reliability, and value. Don’t let outdated battery technology limit your vehicle’s potential or your business’s profitability.
Get your custom bulk supply quote today and discover why over 500 repair shops and dealerships have chosen CNS BATTERY for their BMW i3 battery needs.


