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Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V
The Li-Ion Ebike Battery Case DP-9C is a professional-grade lithium-ion battery enclosure designed for high-performance electric bicycles, e-scooters, and lightweight electric vehicles requiring sustained power delivery. This 13S6P configuration (13 cells in series, 6 cells in parallel) delivers 21Ah capacity at 48V nominal voltage, providing approximately 1008Wh of usable energy for extended range applications. The DP-9C case solves critical challenges in ebike power systems including thermal management, vibration resistance, weatherproofing, and safe battery cell integration for demanding commuter and recreational cycling applications.
Product Overview
The DP-9C battery case employs a modular design architecture that houses 78 individual 18650 or 21700 lithium-ion cells in a precisely engineered 13S6P topology. The series configuration (13S) achieves the 48V nominal output required for mid-drive and hub-motor ebike systems, while the parallel configuration (6P) distributes current load across multiple cell branches, reducing individual cell stress and extending overall battery lifespan to 800-1000 charge cycles. The case features integrated nickel-plated copper busbars for low-resistance electrical connections, minimizing voltage drop and heat generation during high-current discharge scenarios typical in hill climbing or acceleration demands.
This battery enclosure incorporates advanced thermal management through aluminum heat-dissipation fins and internal airflow channels that maintain optimal operating temperatures between 15-45 degrees Celsius. The DP-9C case includes integrated Battery Management System (BMS) compatibility with 48V lithium-specific protection circuits that prevent overcharge, over-discharge, over-current, and cell-balancing failures. The weatherproof polycarbonate housing with IP65-rated connectors ensures reliable performance in wet commuting conditions, while the mounting bracket system accommodates standard ebike frame geometries for secure, vibration-damped installation.
Key Specifications
| Specification | Details |
| Product Type | Li-Ion Battery Case Assembly for Electric Bicycles |
| Brand | DP-9C Series |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Nominal Voltage | 48V (13S configuration) |
| Capacity | 21Ah (6P configuration) |
| Energy Content | 1008Wh (48V x 21Ah) |
| Cell Configuration | 13S6P (78 cells total) |
| Compatible Cell Types | 18650 or 21700 lithium-ion cells |
| Peak Discharge Current | 60A continuous, 100A burst |
| Charging Current | Maximum 10.5A (0.5C rate) |
| Operating Temperature | 15-45 degrees Celsius |
| Storage Temperature | -10 to 60 degrees Celsius |
| IP Rating | IP65 (dust and water resistant) |
| Weight | Approximately 2.8-3.2 kg (with cells) |
| Dimensions | Approximately 250mm x 150mm x 80mm |
| BMS Protection | Overcharge, over-discharge, over-current, cell balancing |
| Connector Type | XT90 or Anderson PowerPole (standard) |
Key Features
- 13S6P Cell Configuration: Delivers 48V nominal voltage with 21Ah capacity, providing 1008Wh energy suitable for 40-80km range depending on motor power and terrain
- Integrated BMS Protection: Comprehensive Battery Management System prevents overcharge, over-discharge, over-current conditions, and performs automatic cell balancing to maximize lifespan
- Thermal Management System: Aluminum heat-dissipation fins and internal airflow channels maintain optimal operating temperatures, preventing thermal runaway and extending cycle life
- Weatherproof Construction: IP65-rated polycarbonate housing with sealed connectors ensures reliable operation in rain, dust, and humid commuting environments
- High Discharge Capability: Supports 60A continuous and 100A burst discharge current, enabling responsive acceleration and hill-climbing performance on demanding terrain
- Modular Design: Accommodates standard 18650 or 21700 lithium-ion cells, allowing field replacement and customization for specific energy requirements
- Low-Resistance Busbars: Nickel-plated copper busbar connections minimize voltage drop and heat generation during high-current operation
- Universal Mounting: Bracket system compatible with common ebike frame geometries including downtube, seat tube, and rear rack mounting positions
Applications and Use Cases
- Urban Commuter E-Bikes: Powers 250W-750W hub motors and mid-drive systems for daily 40-60km commutes with single charge, ideal for professional cyclists and delivery personnel
- Mountain E-Bikes: Delivers sustained high-current output for climbing steep terrain and technical trails, with thermal management preventing performance degradation during extended uphill riding
- Cargo E-Bikes: Provides sufficient energy capacity for loaded cargo transport applications where sustained torque and hill-climbing ability are critical for commercial delivery operations
- Long-Range E-Touring: Supports extended recreational cycling trips with 70-80km range capability, allowing multi-day touring without frequent charging infrastructure access
- E-Scooter Systems: Compatible with 48V electric scooter motors and controllers, offering reliable power for urban micro-mobility applications and last-mile transportation
- DIY Electric Vehicle Projects: Serves as foundation battery pack for custom-built electric skateboards, electric motorcycles, and lightweight electric vehicles requiring 48V nominal voltage
How to Use
Begin installation by selecting an appropriate mounting location on your ebike frame that distributes weight evenly and maintains low center of gravity. Secure the DP-9C case using the included bracket system, ensuring vibration-damping rubber isolators are properly seated to minimize mechanical stress during riding. Connect the battery positive and negative terminals to your motor controller using appropriately rated XT90 or Anderson connectors, verifying polarity before final connection to prevent short-circuit damage. Install the integrated BMS connector to your controller's battery input, confirming the BMS is receiving proper communication signals for voltage monitoring and cell balancing functions.
Before first use, charge the battery using a compatible 48V lithium charger with 10.5A maximum output, allowing 4-6 hours for complete charging from empty state. Monitor the BMS status indicators during initial charging cycles to confirm proper cell balancing and voltage equalization. During operation, avoid discharging below 20% state of charge to preserve battery longevity, as deep discharge cycles accelerate capacity fade. Store the battery in a cool, dry location between 15-25 degrees Celsius when not in use for extended periods, maintaining 50% charge state for optimal preservation of electrochemical capacity.
Frequently Asked Questions
What is the expected range and riding time with the DP-9C 21Ah 48V battery?
Range depends on motor power, rider weight, terrain, and assist level. A 750W motor on flat terrain typically achieves 40-50km per charge, while 250W systems may reach 70-80km. In hilly terrain, expect 30-40% reduction in range. Riding time averages 2-4 hours at moderate assistance levels. Heavier riders and aggressive acceleration reduce range by 15-25% compared to light riders using eco mode.
How many charge cycles will the DP-9C battery last before capacity degradation?
The 13S6P configuration with quality 18650 or 21700 cells typically delivers 800-1000 full charge cycles before capacity drops to 80% of original specifications. Actual lifespan depends on charging practices, operating temperature, and depth of discharge patterns. Avoiding deep discharges below 20% and maintaining storage temperatures between 15-25 degrees Celsius significantly extends cycle life to 1000+ cycles.
Is the DP-9C case compatible with my existing ebike motor controller?
The DP-9C is compatible with most 48V lithium-compatible controllers from reputable manufacturers like Bafang, Bosch, and generic hub motor controllers. Verify your controller accepts 48V nominal input voltage and supports BMS communication protocols. The XT90 and Anderson PowerPole connectors are industry standard for ebike systems. If your controller uses proprietary connectors, adapter cables are readily available from ebike component suppliers.
Can I replace individual cells in the DP-9C case if one fails?
Yes, the modular design allows individual cell replacement if a specific 18650 or 21700 cell fails. However, this requires technical knowledge of series-parallel configurations and BMS operation. We recommend professional service for cell replacement to ensure proper electrical connections and BMS calibration. Replacing cells with mismatched capacity or chemistry may damage the BMS or reduce overall pack performance.
How do I know if my DP-9C battery needs charging?
Most DP-9C cases include LED status indicators or integrate with your motor controller's display to show remaining charge percentage. A fully charged pack shows green indicator, while yellow indicates 20-50% remaining capacity and red signals critical low battery below 20%. For extended storage, recharge when battery reaches 50% state of charge to optimize longevity and prevent deep discharge damage.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping
Buy Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V Online in India
Purchase the Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V
The Li-Ion Ebike Battery Case DP-9C is a professional-grade lithium-ion battery enclosure designed for high-performance electric bicycles, e-scooters, and lightweight electric vehicles requiring sustained power delivery. This 13S6P configuration (13 cells in series, 6 cells in parallel) delivers 21Ah capacity at 48V nominal voltage, providing approximately 1008Wh of usable energy for extended range applications. The DP-9C case solves critical challenges in ebike power systems including thermal management, vibration resistance, weatherproofing, and safe battery cell integration for demanding commuter and recreational cycling applications.
Product Overview
The DP-9C battery case employs a modular design architecture that houses 78 individual 18650 or 21700 lithium-ion cells in a precisely engineered 13S6P topology. The series configuration (13S) achieves the 48V nominal output required for mid-drive and hub-motor ebike systems, while the parallel configuration (6P) distributes current load across multiple cell branches, reducing individual cell stress and extending overall battery lifespan to 800-1000 charge cycles. The case features integrated nickel-plated copper busbars for low-resistance electrical connections, minimizing voltage drop and heat generation during high-current discharge scenarios typical in hill climbing or acceleration demands.
This battery enclosure incorporates advanced thermal management through aluminum heat-dissipation fins and internal airflow channels that maintain optimal operating temperatures between 15-45 degrees Celsius. The DP-9C case includes integrated Battery Management System (BMS) compatibility with 48V lithium-specific protection circuits that prevent overcharge, over-discharge, over-current, and cell-balancing failures. The weatherproof polycarbonate housing with IP65-rated connectors ensures reliable performance in wet commuting conditions, while the mounting bracket system accommodates standard ebike frame geometries for secure, vibration-damped installation.
Key Specifications
| Specification | Details |
| Product Type | Li-Ion Battery Case Assembly for Electric Bicycles |
| Brand | DP-9C Series |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Nominal Voltage | 48V (13S configuration) |
| Capacity | 21Ah (6P configuration) |
| Energy Content | 1008Wh (48V x 21Ah) |
| Cell Configuration | 13S6P (78 cells total) |
| Compatible Cell Types | 18650 or 21700 lithium-ion cells |
| Peak Discharge Current | 60A continuous, 100A burst |
| Charging Current | Maximum 10.5A (0.5C rate) |
| Operating Temperature | 15-45 degrees Celsius |
| Storage Temperature | -10 to 60 degrees Celsius |
| IP Rating | IP65 (dust and water resistant) |
| Weight | Approximately 2.8-3.2 kg (with cells) |
| Dimensions | Approximately 250mm x 150mm x 80mm |
| BMS Protection | Overcharge, over-discharge, over-current, cell balancing |
| Connector Type | XT90 or Anderson PowerPole (standard) |
Key Features
- 13S6P Cell Configuration: Delivers 48V nominal voltage with 21Ah capacity, providing 1008Wh energy suitable for 40-80km range depending on motor power and terrain
- Integrated BMS Protection: Comprehensive Battery Management System prevents overcharge, over-discharge, over-current conditions, and performs automatic cell balancing to maximize lifespan
- Thermal Management System: Aluminum heat-dissipation fins and internal airflow channels maintain optimal operating temperatures, preventing thermal runaway and extending cycle life
- Weatherproof Construction: IP65-rated polycarbonate housing with sealed connectors ensures reliable operation in rain, dust, and humid commuting environments
- High Discharge Capability: Supports 60A continuous and 100A burst discharge current, enabling responsive acceleration and hill-climbing performance on demanding terrain
- Modular Design: Accommodates standard 18650 or 21700 lithium-ion cells, allowing field replacement and customization for specific energy requirements
- Low-Resistance Busbars: Nickel-plated copper busbar connections minimize voltage drop and heat generation during high-current operation
- Universal Mounting: Bracket system compatible with common ebike frame geometries including downtube, seat tube, and rear rack mounting positions
Applications and Use Cases
- Urban Commuter E-Bikes: Powers 250W-750W hub motors and mid-drive systems for daily 40-60km commutes with single charge, ideal for professional cyclists and delivery personnel
- Mountain E-Bikes: Delivers sustained high-current output for climbing steep terrain and technical trails, with thermal management preventing performance degradation during extended uphill riding
- Cargo E-Bikes: Provides sufficient energy capacity for loaded cargo transport applications where sustained torque and hill-climbing ability are critical for commercial delivery operations
- Long-Range E-Touring: Supports extended recreational cycling trips with 70-80km range capability, allowing multi-day touring without frequent charging infrastructure access
- E-Scooter Systems: Compatible with 48V electric scooter motors and controllers, offering reliable power for urban micro-mobility applications and last-mile transportation
- DIY Electric Vehicle Projects: Serves as foundation battery pack for custom-built electric skateboards, electric motorcycles, and lightweight electric vehicles requiring 48V nominal voltage
How to Use
Begin installation by selecting an appropriate mounting location on your ebike frame that distributes weight evenly and maintains low center of gravity. Secure the DP-9C case using the included bracket system, ensuring vibration-damping rubber isolators are properly seated to minimize mechanical stress during riding. Connect the battery positive and negative terminals to your motor controller using appropriately rated XT90 or Anderson connectors, verifying polarity before final connection to prevent short-circuit damage. Install the integrated BMS connector to your controller's battery input, confirming the BMS is receiving proper communication signals for voltage monitoring and cell balancing functions.
Before first use, charge the battery using a compatible 48V lithium charger with 10.5A maximum output, allowing 4-6 hours for complete charging from empty state. Monitor the BMS status indicators during initial charging cycles to confirm proper cell balancing and voltage equalization. During operation, avoid discharging below 20% state of charge to preserve battery longevity, as deep discharge cycles accelerate capacity fade. Store the battery in a cool, dry location between 15-25 degrees Celsius when not in use for extended periods, maintaining 50% charge state for optimal preservation of electrochemical capacity.
Frequently Asked Questions
What is the expected range and riding time with the DP-9C 21Ah 48V battery?
Range depends on motor power, rider weight, terrain, and assist level. A 750W motor on flat terrain typically achieves 40-50km per charge, while 250W systems may reach 70-80km. In hilly terrain, expect 30-40% reduction in range. Riding time averages 2-4 hours at moderate assistance levels. Heavier riders and aggressive acceleration reduce range by 15-25% compared to light riders using eco mode.
How many charge cycles will the DP-9C battery last before capacity degradation?
The 13S6P configuration with quality 18650 or 21700 cells typically delivers 800-1000 full charge cycles before capacity drops to 80% of original specifications. Actual lifespan depends on charging practices, operating temperature, and depth of discharge patterns. Avoiding deep discharges below 20% and maintaining storage temperatures between 15-25 degrees Celsius significantly extends cycle life to 1000+ cycles.
Is the DP-9C case compatible with my existing ebike motor controller?
The DP-9C is compatible with most 48V lithium-compatible controllers from reputable manufacturers like Bafang, Bosch, and generic hub motor controllers. Verify your controller accepts 48V nominal input voltage and supports BMS communication protocols. The XT90 and Anderson PowerPole connectors are industry standard for ebike systems. If your controller uses proprietary connectors, adapter cables are readily available from ebike component suppliers.
Can I replace individual cells in the DP-9C case if one fails?
Yes, the modular design allows individual cell replacement if a specific 18650 or 21700 cell fails. However, this requires technical knowledge of series-parallel configurations and BMS operation. We recommend professional service for cell replacement to ensure proper electrical connections and BMS calibration. Replacing cells with mismatched capacity or chemistry may damage the BMS or reduce overall pack performance.
How do I know if my DP-9C battery needs charging?
Most DP-9C cases include LED status indicators or integrate with your motor controller's display to show remaining charge percentage. A fully charged pack shows green indicator, while yellow indicates 20-50% remaining capacity and red signals critical low battery below 20%. For extended storage, recharge when battery reaches 50% state of charge to optimize longevity and prevent deep discharge damage.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping
Buy Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V Online in India
Purchase the Li-Ion Ebike Battery Case DP-9C 13S6P 21Ah 48V online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.