Brief Description
Client Background
As electric vehicle technology continues to evolve, more EV owners are looking for cost-effective ways to improve vehicle range and battery performance. Harry, a Nissan EV owner from Bulgaria, wanted to upgrade his vehicle battery system to achieve longer driving distance and more stable power output.
The project focused on building a complete 50kWh vehicle power chassis using CALB 44.4V 147Ah battery modules while maintaining safety, stability, and compatibility with the original vehicle structure.
Project Information
- Client Name: Harry
- Country: Bulgaria
- Brand: CALB
- Product: 147AH Module
- Application: Nissan EV Battery Upgrade
- Manufacturer: Shenzhen XIHO Energy Technology Co., Ltd.
Why Choose CALB 44.4V 147Ah Modules?
When comparing battery options from different li ion battery manufacturers, Harry prioritized reliability, energy density, and cycle life. The CALB 44.4V 147Ah module offered several advantages for EV conversion and battery replacement projects.
The CALB 44.4V 147Ah module features high consistency, compact structure, and strong discharge capability. These characteristics make it suitable for vehicle chassis integration and long-range EV applications.
In addition, the CALB 44.4V 147Ah design provides excellent thermal stability and efficient energy utilization, helping improve overall vehicle performance while reducing maintenance costs.
Compared with traditional battery packs, the CALB 44.4V 147Ah solution also simplifies system assembly and wiring design, which is especially important for customized EV projects.
Project Challenges
Although the project had strong potential, several technical challenges had to be addressed during implementation.
1. Removal of the Original Battery System
The original Nissan battery pack required complete removal before installation of the new battery chassis. This process involved careful disassembly, voltage isolation, and connector modification.
2. BMS Modification and Communication
One of the biggest challenges was adapting the original Battery Management System. The new CALB 44.4V 147Ah battery modules required communication adjustments and compatibility testing with the Nissan vehicle control system.
3. Space Optimization
Installing eight sets of CALB 44.4V 147Ah modules inside the vehicle chassis required precise structural planning. The installation team needed to optimize spacing, cooling channels, and cable routing while maintaining vehicle balance.
Professional Solution Provided by XIHO
To ensure successful project completion, Shenzhen XIHO Energy Technology Co., Ltd.
Implementation Process
The installation process began with removal of the original battery system. After chassis inspection and cleaning, technicians installed eight sets of CALB 44.4V 147Ah modules into the customized battery frame.
Each CALB 44.4V 147Ah module was carefully connected to ensure voltage consistency and safe current distribution. After wiring completion, the BMS system was recalibrated and tested multiple times.
Cooling channels and insulation protection were also upgraded to improve long-term operational stability.
After several rounds of testing, the upgraded Nissan EV successfully passed road validation and charging performance tests.
Final Results
The final battery system achieved approximately 50kWh total capacity, significantly improving driving range and power stability.
Key project results included:
- Extended driving range
- Stable high-current discharge performance
- Improved battery efficiency
- Better thermal management
- Reduced charging frequency
Harry reported that the upgraded vehicle now performs much better during long-distance driving and daily commuting.
The CALB 44.4V 147Ah battery system also demonstrated reliable charging behavior and consistent voltage performance under different driving conditions.
Why More EV Owners Are Choosing Custom Battery Upgrades
As EV technology develops rapidly, more users are exploring customized battery replacement solutions instead of purchasing entirely new vehicles.
For many EV owners, modular battery upgrades provide:
- Lower investment costs
- Longer vehicle lifespan
- Improved driving range
- Better battery efficiency
- Flexible expansion options
Among available solutions, CALB 44.4V 147Ah battery modules have become increasingly popular due to their performance, safety, and proven reliability.
About Shenzhen XIHO Energy Technology Co., Ltd.
Shenzhen XIHO Energy Technology Co., Ltd. specializes in advanced lithium battery solutions for EV upgrades, energy storage systems, and DIY battery projects.
As one of the trusted suppliers cooperating with global li ion battery manufacturers, XIHO provides technical support, battery integration solutions, and customized battery systems for customers worldwide.
The company supports projects involving CALB, EVE, CALB, REPT, and other well-known battery brands.
Conclusion
Harry’s successful Nissan EV upgrade project in Bulgaria demonstrates the strong potential of CALB 44.4V 147Ah battery modules for customized electric vehicle applications. By combining professional installation support, optimized BMS integration, and high-quality CALB battery technology, the project achieved a stable 50kWh power system with significantly improved driving range. If you are looking for reliable battery upgrade solutions from experienced li ion battery manufacturers, Shenzhen XIHO Energy Technology Co., Ltd. can provide professional support for your next EV or energy storage project. Contact us today to learn more about customized lithium battery solutions and pricing options.
Welcome to contact us:
WhatsApp/Wechat/Mobile: +86 13332949210
Email: info@xihobattery.com
Website: www.xihobattery.com
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