Functional Integration for E-Bike Manufacturers
This 48V/52V triangle lithium ion battery pack is engineered specifically for electric bicycle manufacturers and OEMs requiring space-efficient power modules. Designed to fit within constrained frame geometries, the triangular form factor optimizes center of gravity and ergonomics, facilitating balanced handling and simplified assembly. Target users include custom e-bike developers and battery pack suppliers seeking scalable capacity options, including 20Ah, 25Ah, and 28Ah models. Our solution supports integration where compactness and ease of mounting are critical, enabling developers to customize energy density without compromising structural design. The pack’s form allows accessible wiring and straightforward installation procedures suited for high-volume production environments.
Technical Specifications Guaranteeing Performance and Safety
Equipped with high-energy-density 18650 lithium ion battery pack cells, all configurations operate at nominal voltages of 48V or 52V with a choice of 13S8P or 14S8P arrangements. The battery pack supports charge voltages up to 54.6V for 48V setups and 58.8V for the 52V variants. Continuous discharge currents range from 30A to 40A, depending on the model, ensuring stable power output for varied riding conditions. An integrated battery management system (BMS) monitors over-charge, over-discharge, over-current, and thermal conditions, enabling safe, reliable operation. Precise dimensions (395 × 365 × 232 × 80 mm) and weights between 6.2 and 6.4 kg aid precise mechanical integration planning. Compliance with CE, RoHS, UN38.3, IEC62133, and UL standards aligns with industry safety requirements.
Industrial Applications and Value in Custom E-Bike Solutions
This lithium ion battery pack is an optimal choice for electric bicycle assembly lines, aftermarket upgrades, and prototype development within mobility industries. It delivers consistent and safe energy supply essential for daily commuting and extended-range applications. Its modular design facilitates adaptation to various e-bike frame sizes and capacities, appealing to battery pack suppliers aiming to support diversified OEM requests. The pack enhances the reliability and performance of electric drive systems while reducing total system weight and data validation complexity. Integration with performance analytics and thermal management workflows further enables precise energy management, contributing to a comprehensive supply chain solution for custom battery manufacturer partners worldwide.
Product Advantages
Engineering-Optimized Structural Design
The triangular geometry of this lithium ion battery pack exemplifies advanced design considerations promoting frame integration with minimal spatial intrusion. Modular construction allows flexible configurations in 13S8P or 14S8P arrangements, enabling tailoring of capacity and voltage within a standardized casing. The integrated BMS architecture streamlines the protection circuitry, reducing ancillary components and simplifying manufacturing assembly. Precise dimensioning and weight distribution facilitate balanced incorporation into electric bicycle frames without requiring extensive customization. This design approach optimizes system-level compatibility and supports scalable production, setting a benchmark for battery pack suppliers focusing on efficiency and reliability in custom battery manufacturer collaborations.
Enhanced Operational Performance and User-Centric Benefits
This pack delivers high discharge currents up to 40A continuous, supporting dynamic e-bike operational demands with stable voltage supply. The use of robust 18650 cells guarantees consistency in energy density and cycle life, minimizing capacity fade over time. The incorporated BMS provides comprehensive safeguards enhancing battery longevity and protecting against adverse thermal and electrical events, increasing system uptime and reducing maintenance interventions. Accessibility in wiring and form factor simplifies installation and replacement processes, benefiting end users and manufacturers alike. The battery pack’s certified compliance assures confidence in cross-regional shipping and regulatory adherence, simplifying market entry and after-sales support for battery pack suppliers.
Product Specifications
| Item |
Specifications |
Remark |
| Model No. |
SJB-48V20Ah |
|
| Nominal Voltage |
48V |
|
| Nominal Capacity |
20Ah |
Customized |
| Dimensions |
395*365*232*80mm |
|
| Weight |
6.2kg |
|
| Cycle Life |
≥1000 times
|
80% DOD |
| Charge Voltage |
54.6V |
|
| Discharge Cut-off Voltage |
36.4V |
|
| Max Charge Current |
5A |
|
| Max Continuous Discharge Current |
30A |
Peak: 80A |
| Operating Temperature |
Charge: 0℃ ~ 45℃ |
|
| Discharge: -20℃ ~ 60℃ |
|
| Storage Temperature |
-10℃ ~ 40℃
|
|
| Charging Port |
XLR/RCA/DC5521/DC5525 |
|
| Discharge Port |
Anderson/XT60/XT90/Bullet/T Port |
|
| BMS Function |
Over-charge protection, over-discharge protection, over-current protection, over temperature, balancing, etc. |
|
| IP Class |
IP55 |
|
| Case Material |
ABS+PC |
|
Product Showcase
Product Features
 |
 |
 |
 |
| Low self discharge |
High cycle and service life |
High performance lithium battery |
Easy installation |
 |
 |
 |
 |
| Excellent high temperature performance |
High energy density and conversion efficiency
|
Advanced BMS |
Safe lock design |
| |
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|
Quality Assurance
 |
|
(1) Brand new A-grade domestic or imported cells
* Stable material composition greatly reduces the safety risks of the battery pack
* Good battery consistency greatly improves the overall life of the battery pack
* With safety explosion-proof valve
* High cycle life of more than 1,000 times
|
|
(2) Safe and secure internal battery assembly
* Using fixed brackets for enhanced safety and stability.
* Spot-welded with formed pure nickel strips, offering lower resistance, higher efficiency, rust resistance, and longer lifespan.
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 |
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(3) Strict Cell Matching
Cells are paired based on capacity, voltage, and internal resistance. Strict testing ensures optimal stability, performance, and lifespan.
|
Applications
 |
 |
| Electric Bicycle |
Electric Mountain Bike |
 |
 |
| Wheelchair Tractor |
Electric ATV |
Triangle Ebike Batteries
| Voltage & Capacity |
Configuration |
Max Dimensions |
Weight |
Applicable Motor |
BMS |
Charge Voltage |
Discharge Cut-Off Voltage |
| 48V 20Ah |
18650-2600-13S8P |
395*365*232*80mm |
approx. 6.2kg |
250W-1000W |
30A |
54.6V |
36.4V |
| 48V 28Ah |
18650-3500-13S8P |
395*365*232*80mm |
approx. 6.2kg |
250W-1500W |
40A |
54.6V |
36.4V |
| 52V 20Ah |
18650-2600-14S8P |
395*365*232*80mm |
approx. 6.4kg |
250W-1000W |
30A |
58.8V |
39.2V |
| 52V 25Ah |
18650-3500-14S8P |
395*365*232*80mm |
approx. 6.4kg |
250W-1500W |
40A |
58.8V |
39.2V |
Precautions
1. No Memory Effect: Lithium batteries do not have a memory effect, but it is recommended to fully charge new batteries before use. Cycling the battery a few times will improve performance.2. Avoid Deep Discharge: Recharge the battery when it reaches about 10% to avoid deep discharge, which can damage the battery's lifespan.3. Timely Recharging: Avoid storing the battery under low voltage after use. Please recharge it promptly.4. Long-Term Storage Requirements: If the battery will not be used for a long time, first disconnect it from the device, then charge each cell to about 3.8V for storage. Check the voltage every 3-6 months, and if it drops below 3V per cell, recharge it in time.5. Proper Charging Method: First, connect the charger to the battery pack, then plug the charger into the AC power supply. Charge according to the manufacturer's recommended parameters.6. Waterproof, Moisture-Proof, and Shockproof: Ensure the battery pack is protected against water, moisture, and shocks.7. Do Not Disassemble: It is strictly forbidden to impact, squeeze, or privately disassemble the battery pack.8. Transportation Requirements: Do not transport the battery pack with a full charge over long distances.
Use Scenarios
Integration in Electric Bicycle OEM Manufacturing
In electric bicycle production environments, where frame space constraints necessitate innovative battery solutions, this custom lithium ion battery pack serves as a core power component. Its triangular design integrates seamlessly into frame cavities, optimizing the bike’s center of gravity and spatial utilization. The battery pack’s specifications, including voltage options of 48V and 52V and variable capacities, align with different e-bike performance tiers. Embedded BMS functionality ensures safety compliance, fulfilling regulatory and operational standards demanded by leading manufacturers. This solution supports streamlined assembly workflows, reducing manual integration time and enhancing product consistency for OEMs and battery pack suppliers focused on high-volume deliveries.
Role in Aftermarket Upgrades and Prototype Development
For repair shops and R&D teams engaged in upgrading existing e-bike fleets or prototyping new models, this lithium ion battery pack offers a reliable, compact power source. Its modular electrical configuration adapts to diverse usage patterns, supplying sustained current output critical for performance testing and extended endurance rides. The integrated safety features and industry certifications enable dependable operation during accelerated testing cycles and field validation. Seamless mounting and accessible wiring design reduce retrofit complexity, enabling quicker turnaround and iterative development. This battery pack thereby supports continuous innovation and service improvements within the custom battery manufacturer and battery pack supplier sectors catering to evolving market demands.
FAQ
What customization options are available for your lithium ion battery packs?
We offer tailored configurations for our lithium ion battery pack solutions, including various voltages (48V or 52V) and capacities (20Ah to 28Ah). Custom pack dimensions, cell arrangements, and BMS features can be designed to fit specific e-bike frame requirements or OEM needs.
How do you ensure the safety and reliability of your battery packs?
Our battery packs integrate advanced Battery Management Systems (BMS) to protect against over-charge, over-discharge, over-current, and thermal events. The batteries undergo strict quality testing in accordance with CE, UL, and UN38.3 certifications to maintain high reliability and safety standards.
Can your battery packs be shipped internationally under current regulations?
Yes, all our batteries comply with UN38.3, MSDS, CE, RoHS, and related transportation certifications. We provide full documentation and testing reports to support safe and legal shipment into North America, the EU, and other global markets.
Do you provide technical support for integrating your battery packs into custom e-bike designs?
We assist clients with engineering and production guidance for integrating our custom battery manufacturer solutions. Our experienced team supports dimension planning, wiring accessibility, and mounting to facilitate smooth installation and performance optimization.
