Home > Products > E-bike & Motorcylce Batteries > MATE-EB-5T 36V13Ah Down tube Style E-bike Lithium ion Battery
Model No.: MATE-EB-5T
Style: Down tube
Nominal Voltage: 36V
Nominal Capacity: 13Ah
Cells: ISR18650-2500mAh 3.6V
Configuration: 10S5P
BMS: Standard
Dimensions: 526*79*72 (mm)
Production Desciption
The Down Tube Style E-bike Lithium Ion Battery has become one of the most widely used battery configurations in today’s electric bicycle market. Mounted inside or along the bicycle’s down tube, this battery design offers a sleek appearance, improved weight balance, and enhanced riding stability. It is especially popular among commuter e-bikes, mountain e-bikes, and high-performance urban electric bicycles.
Designed with advanced lithium-ion technology and intelligent management systems, down tube batteries deliver strong performance, long lifespan, and reliable safety—making them an ideal solution for both OEM manufacturers and global e-bike distributors.
Main Features:
1. High Safety and Reliability: With EV A+ Grade 21700cells (3.7V5000mAh)
2. Long Cycle Life: 500 times of 0.5C charge&discharge, 100%DOD, the remaining capacity is 80%+ of initial Capacity.
3. Water-proof Design: We adopt water-proof technology to satisfy the use in the rainy or humid weather.
4. Smart BMS is optional.: Allows the riders to monitor battery status including SOC, voltage, current, temperature, cycle life etc through an smart phone APP.
5. GPS function is optional. People can locate their bikes through a smart phone APP.
Specification
| No. | Items | Specifications |
| 1 | Nominal Voltage | 36V |
| 2 | Nominal Capacity | 10Ah |
| 3 | Cell inside | 21700-5000mAh 3.7V |
| 4 | Configuration | 10S2P |
| 5 | Standard Charge Current | 2A (0.2C) |
| 6 | Max. Charge Current | 10A (1C) |
| 7 | Protected Circuit Board(BMS) | Standard BMS |
| 8 | Continuous Discharge Current | 10A |
| 9 | Peak Discharge Current | 40A |
| 10 | Full Charged Voltage | 42V (4.2V per cell) |
| 11 | Charge Cut-off Voltage | 42.5V (4.25V per cell) |
| 12 | Discharge Cut-off Voltage | 35V (2.5V per cell) |
| 13 | Battery Net Weight | 3.2kg approx. |
| 14 | Battery Dimension | 437.5*48.8*48.1(mm) |
| 15 | Charging/Discharging | DC connector |
| A pair of wire | ||
| 16 | Operating Temperature | Charging: 0°C ~ 45°C Discharging: -20°C ~ 55°C |
| 17 | Storage Temperature | (Recommended to store 20 ± 5°C for long term storage) |
| 18 | Life Cycle | >800 times (80% of initial capacity at 0.2C rate, IEC Standard) |
Integrated and Aesthetic Design
Down tube batteries blend seamlessly with the bicycle frame, creating a modern and streamlined appearance that many brands and consumers prefer.
Improved Riding Balance
The central mounting position lowers the bike’s center of gravity, improving:
Riding stability
Handling performance
Comfort during long-distance cycling
Higher Energy Density
Using 21700 lithium cells, the battery can provide more power while maintaining a compact structure.
Better Protection
Integrated installation within the frame offers better protection against:
External impacts
Environmental exposure
Theft risks
Down tube style lithium-ion batteries are widely used in:
City commuter e-bikes
Electric mountain bikes (e-MTB)
Trekking and touring e-bikes
High-performance urban electric bicycles
Smart connected e-bike systems
Their combination of performance, design, and intelligent features makes them a preferred choice in the global electric bike market.
With the rapid growth of electric mobility, manufacturers are increasingly focusing on batteries that combine performance, safety, and smart technology. Down tube style batteries meet these needs by offering:
Strong power output
Long lifecycle performance
Smart monitoring capabilities
Enhanced security options
Clean and integrated bike design
As a result, they are commonly adopted by premium e-bike brands and OEM manufacturers.
Details Photos:
Other Options
| Model No. | Cell Type | Size(mm) | Max. Cell(pcs) | Max. Capacity |
| MATE-SN-SSE123 | 18650 | 430*42*103 | 52 | 24V7Ah |
| MATE-SN-SSE116 | 18650 | 435.5*59*60.4 | 65 | 24V7Ah/36V10Ah |
ODM/OEM Customized Solution
For the needs of different types of customers such as electric bicycle manufacturers, modellers, and overseas distributors, we have developed three exclusive solutions:
1. Manufacturer support solution
Challenges addressed: For the customized vehicle model requirements of manufacturers, we can adjust the battery shell mold according to the specific dimensions and curvature of the lower tube of the frame, achieving seamless integration; customize BMS parameters to match the power curve of the vehicle controller, optimizing the starting smoothness and range performance; provide an integrated waterproof design for the battery and the entire vehicle, enhancing the protection level of the vehicle.
Additional services: Assist in completing international certification tests such as CE, UL, and UN38.3, providing a complete set of certification materials, and shortening the product launch cycle.
2. Market modification solution
Challenges addressed: For the general compatibility requirements of modellers, provide multiple specifications of adapter brackets, which can be adapted to different diameter bicycle lower tubes; provide installation toolkits and detailed tutorials to reduce the modification threshold; support the upgrade of fast charging function (42V3A), reducing the charging time to within 5 hours.
Additional services: Provide 7×24-hour technical guidance to assist in solving problems in the modification process such as circuit matching and installation fixation.
3. Overseas market exclusive solution
Challenges addressed: For overseas markets such as Europe and Southeast Asia, provide products that comply with local regulations (compatible with 250W motors and meeting speed limit requirements); customize multi-language power display interfaces to match local user habits; optimize packaging design to meet the standards of shock and short circuit prevention during cross-border transportation, reducing the rate of logistics damage.
Additional services: Provide MSDS, RoHS, etc. clearance documents to assist customers in handling cross-border logistics and certification matters.
Choosing MateLion means you chose a reliable mate to support your business with market-proved high-quality lithium ion batteries, advanced assembly technology and worry-free after-sale service. As a professional manufacturer for years, MateLion's capability covers providing professional lithium ion batteries to E-bike, E-motor cycle, EV, LEV, HEV, AGV, RV, VAN, Marine, Solar System, Golf Carts, Off-grid System etc. MateLion can customize batteries exactly according to your requirements with ODM/OEM service to help you market your own brand!
The Down Tube Style E-bike Lithium Ion Battery is a reliable and advanced power solution designed for modern electric bicycles. Equipped with EV A+ Grade 21700 cells, long cycle life, waterproof protection, optional smart BMS, and GPS tracking, it provides a balanced combination of safety, intelligence, and performance.
For e-bike manufacturers, distributors, and mobility companies, choosing a high-quality down tube battery can significantly enhance product competitiveness and improve the overall riding experience in the rapidly expanding e-bike market.
