Dmegc - 21700 : 4500mAh Lithium Cell
YATI-4350Quick Highlight
DMEGC 21700 4500mAh Lithium Cell
The DMEGC 21700 4500mAh Lithium Cell is a cylindrical lithium-ion cell in the standard 21700 format, offering a 4500mAh nominal capacity at 0.2C and a 3.7V nominal voltage. It is designed for battery pack builders, OEMs, and businesses involved in assembling or rebuilding lithium-ion battery packs.
Price, MOQ & Stock: Contact Yati Infotech Solution Pvt. Ltd. for current pricing, minimum order quantity, and availability.
Product Overview
The DMEGC 21700 4500mAh Lithium Cell is a rechargeable cylindrical lithium-ion cell manufactured by Hengdian Group DMEGC New Energy Battery Division.
The 21700 designation refers to the cell's physical format. Compared with the older 18650 format, a 21700 cell is physically larger and can provide higher capacity per cell.
The cell has a maximum diameter of 21.5mm and maximum height of 70.75mm.
This product is supplied as a bare lithium-ion cell, not as a complete battery pack. It requires an appropriate charging system, protection circuitry, and correct pack assembly.
Key Features
- 4500mAh nominal capacity at 0.2C
- 4350mAh minimum capacity at 0.2C
- 3.7V nominal voltage
- 4.2V charge voltage
- Internal resistance of less than 30mΩ (ACIR)
- 80% or more capacity retention after 800 cycles under specified test conditions
- Charge temperature range: 0°C to 50°C
- Discharge temperature range: -20°C to 60°C
- Weight: less than 76g
- Standard 21700 cylindrical lithium-ion format
Key Benefits
High Capacity Per Cell
With a nominal capacity of 4500mAh, this 21700 lithium-ion cell can help battery pack designers achieve their required capacity with an appropriate cell configuration. The actual number of cells required depends on the voltage, capacity, current, and physical requirements of the final pack.
Defined Electrical & Operating Limits
The manufacturer's specifications provide defined charging, discharging, current, voltage, and temperature limits. These specifications can help engineers select suitable protection and battery management components for their application.
Defined Storage Characteristics
According to the manufacturer's specification, the cell provides:
- ≥90% retention after 28 days at 25°C
- ≥95% recovery after 28 days at 25°C
- ≥80% retention after 28 days at 60°C
- ≥90% recovery after 28 days at 60°C
Standard 21700 Format
The 21700 format provides a larger physical cell size than the 18650 format and is widely used in modern lithium-ion battery pack designs.
However, a 21700 cell is not a direct drop-in replacement for an 18650 cell because the physical dimensions are different.
Technical Specifications
| Specification | Details |
| Model | 21700-4500mAh |
| Manufacturer | Hengdian Group DMEGC, New Energy Battery Division |
| Cell Type | Cylindrical lithium-ion cell |
| Nominal Capacity | 4500mAh @ 0.2C |
| Minimum Capacity | 4350mAh @ 0.2C |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Standard Charge | CC-CV, 0.5C to 4.2V, 0.05C cut-off |
| Standard Discharge | CC, 0.2C to 2.5V |
| Discharge Cut-off Voltage | 2.5V |
| Maximum Charge Current | 1C (not for cycle) |
| Maximum Continuous Discharge | 3C (not for cycle) |
| Internal Resistance | <30mΩ (ACIR) |
| Cycle Life | ≥80% capacity after 800 cycles (+0.5C/-1C, 25°C) |
| Operating Temperature | Charge: 0°C to 50°C; Discharge: -20°C to 60°C |
| Weight | <76g |
| Maximum Dimensions | Ø21.5mm × 70.75mm |
| Shipping State | 3.500–3.700V open-circuit voltage, ≤30% SOC |
Discharge Capability
According to the manufacturer's datasheet, relative capacity after discharge is:
- 0.2C: 100%
- 0.5C: ≥95%
- 1C: ≥93%
- 2C: ≥90%
- 3C: ≥88%
Temperature Performance
After charging at 25°C and discharging at 1C:
- -10°C: ≥80%
- 0°C: ≥85%
- 25°C: 100%
- 55°C: ≥95%
Applications
The manufacturer's datasheet specifies that the cell should be used in dedicated applications within its stated operating limits.
Typical applications for 21700 lithium-ion cells in this capacity range may include:
- E-bike and light electric mobility battery packs
- Portable power banks and electronic devices
- Cordless power tools
- Robotics and other battery-powered equipment
- Custom lithium-ion battery packs
- Battery pack rebuilding and assembly projects
- OEM battery pack applications
Before selecting this cell, verify that the application's continuous and peak current requirements are compatible with the cell's specified discharge limits.
Handling & Battery Pack Assembly Guidelines
Lithium-ion cells must be handled and assembled carefully. The manufacturer's specification includes the following precautions:
- Use a dedicated lithium-ion charger. Do not connect the cell directly to a mains power outlet.
- Use appropriate overcharge protection to prevent the cell from exceeding its specified charging voltage.
- Use suitable over-discharge protection to prevent the cell from falling below the specified discharge cut-off voltage.
- Provide appropriate overcurrent protection in the battery pack.
- Use spot welding with suitable nickel strip for pack assembly. Do not solder directly onto the cell body.
- Do not mix cells from different manufacturers, models, or different aged batches within the same pack.
- Inspect cells before assembly and check their voltage and internal resistance.
- Keep cells away from young children.
- For long-term storage of three months or more, store cells in a dry, cool environment at -20°C to 25°C and ≤70% relative humidity.
Always follow the manufacturer's latest specification and applicable battery-pack safety requirements when designing or assembling a pack.
Safety Disclaimer
Important Safety Information: This product is a bare rechargeable lithium-ion cell, not a finished battery or consumer-ready battery pack. Improper charging, short-circuiting, physical damage, overcharging, over-discharging, overheating, or incorrect assembly may result in fire, explosion, serious injury, or property damage.
- Use the cell only with a suitable charger, protection circuit/BMS, and properly designed battery pack.
- Do not short-circuit, crush, puncture, disassemble, or physically damage the cell.
- Do not use cells that are swollen, leaking, dented, damaged, overheated, or otherwise abnormal.
- Do not solder directly onto the cell body.
- Battery pack assembly should be performed by qualified or experienced personnel using appropriate equipment and safety procedures.
- Do not mix cells from different manufacturers, models, ages, or specifications unless specifically permitted by the manufacturer.
- Always operate, charge, store, and assemble the cell within the manufacturer's specified limits.
- Keep cells away from heat sources, flames, conductive objects, and children.
- Do not leave lithium-ion cells or battery packs charging unattended.
The specifications provided on this page are for reference and should not replace the latest manufacturer's datasheet, applicable safety standards, or professional engineering evaluation. The purchaser is responsible for ensuring that the cell and completed battery pack are suitable and safely designed for the intended application.
Always follow the manufacturer's latest safety instructions and applicable regulations when handling or assembling lithium-ion battery packs.
Why Choose Yati Infotech Solution?
Yati Infotech Solution Pvt. Ltd. offers DMEGC lithium-ion cells for customers involved in battery pack assembly, OEM applications, and lithium battery solutions.
Rather than relying on generic product claims, customers can refer to the manufacturer's stated specifications when evaluating this 21700 4500mAh lithium-ion cell for their application.
For current pricing, MOQ, stock availability, bulk-order requirements, dispatch timelines, technical assistance, GST invoicing, and warranty/replacement terms, contact Yati Infotech Solution Pvt. Ltd. directly for verified details.
Frequently Asked Questions
What is the DMEGC 21700 4500mAh lithium cell?
The DMEGC 21700 4500mAh lithium cell is a rechargeable cylindrical lithium-ion cell with a 4500mAh nominal capacity and 3.7V nominal voltage. It is supplied as a bare cell for battery pack assembly.
What are the capacity and voltage of the 21700 4500mAh cell?
The cell has a 4500mAh nominal capacity at 0.2C and a 4350mAh minimum capacity at 0.2C. Its nominal voltage is 3.7V, with a specified charge voltage of 4.2V and discharge cut-off voltage of 2.5V.
How should the DMEGC 21700 4500mAh cell be charged?
The specified standard charging method is CC-CV at 0.5C to 4.2V, with charging ending when the current reaches 0.05C.
The datasheet lists 1C as the maximum charge current, but this is not specified for cycle operation. Charging should be performed using a suitable dedicated lithium-ion charging system and within the specified temperature range of 0°C to 50°C.
How many cycles does the 21700 4500mAh cell last?
The manufacturer's specification states at least 80% capacity retention after 800 cycles under the specified test conditions: 25°C, 0.5C charging and 1C discharge.
Actual cycle life can vary depending on charging conditions, discharge rate, temperature, storage, pack design, and usage.
What is the maximum discharge current?
The datasheet specifies 3C as the maximum continuous discharge rate, with the note that this rating is not for cycle operation.
For pack design, appropriate overcurrent protection should also be incorporated according to the manufacturer's recommendations and the requirements of the finished battery pack.
Can a 21700 cell replace an 18650 cell?
No. A 21700 cell is not a direct drop-in replacement for an 18650 cell.
The 21700 format is physically larger, so the battery holder, enclosure, spacing, busbars, and overall pack layout must be designed for the 21700 dimensions.
The cell has maximum dimensions of approximately 21.5mm × 70.75mm.
Where can I find the DMEGC 21700 4500mAh cell datasheet?
The manufacturer's specification contains the technical information for this 21700 lithium-ion cell.
If Yati Infotech Solution has permission to host the manufacturer's document, a verified datasheet download link can be added to this product page.
Does the DMEGC 21700 4500mAh cell come with a warranty?
The manufacturer's datasheet describes a one-year warranty from the date of shipment, subject to its stated terms and exclusions.
Yati Infotech Solution's own warranty, replacement, and return terms should be confirmed directly with Yati before purchase.
What is the price of the DMEGC 21700 4500mAh lithium cell?
Pricing can vary based on quantity, stock availability, and order requirements.
Contact Yati Infotech Solution Pvt. Ltd. for the latest price, MOQ, and availability.
Get Your Quote from Yati
Looking for DMEGC 21700 4500mAh lithium-ion cells for battery pack assembly, OEM applications, or custom battery projects?
Share your required quantity and application with Yati Infotech Solution Pvt. Ltd., and the team can provide current pricing and availability.
Contact Yati today for a quote and product availability.
Product Overview
DMEGC 21700 4500mAh Lithium Cell
The DMEGC 21700 4500mAh Lithium Cell is a cylindrical lithium-ion cell in the standard 21700 format, offering a 4500mAh nominal capacity at 0.2C and a 3.7V nominal voltage. It is designed for battery pack builders, OEMs, and businesses involved in assembling or rebuilding lithium-ion battery packs.
Price, MOQ & Stock: Contact Yati Infotech Solution Pvt. Ltd. for current pricing, minimum order quantity, and availability.
Product Overview
The DMEGC 21700 4500mAh Lithium Cell is a rechargeable cylindrical lithium-ion cell manufactured by Hengdian Group DMEGC New Energy Battery Division.
The 21700 designation refers to the cell's physical format. Compared with the older 18650 format, a 21700 cell is physically larger and can provide higher capacity per cell.
The cell has a maximum diameter of 21.5mm and maximum height of 70.75mm.
This product is supplied as a bare lithium-ion cell, not as a complete battery pack. It requires an appropriate charging system, protection circuitry, and correct pack assembly.
Key Features
- 4500mAh nominal capacity at 0.2C
- 4350mAh minimum capacity at 0.2C
- 3.7V nominal voltage
- 4.2V charge voltage
- Internal resistance of less than 30mΩ (ACIR)
- 80% or more capacity retention after 800 cycles under specified test conditions
- Charge temperature range: 0°C to 50°C
- Discharge temperature range: -20°C to 60°C
- Weight: less than 76g
- Standard 21700 cylindrical lithium-ion format
Key Benefits
High Capacity Per Cell
With a nominal capacity of 4500mAh, this 21700 lithium-ion cell can help battery pack designers achieve their required capacity with an appropriate cell configuration. The actual number of cells required depends on the voltage, capacity, current, and physical requirements of the final pack.
Defined Electrical & Operating Limits
The manufacturer's specifications provide defined charging, discharging, current, voltage, and temperature limits. These specifications can help engineers select suitable protection and battery management components for their application.
Defined Storage Characteristics
According to the manufacturer's specification, the cell provides:
- ≥90% retention after 28 days at 25°C
- ≥95% recovery after 28 days at 25°C
- ≥80% retention after 28 days at 60°C
- ≥90% recovery after 28 days at 60°C
Standard 21700 Format
The 21700 format provides a larger physical cell size than the 18650 format and is widely used in modern lithium-ion battery pack designs.
However, a 21700 cell is not a direct drop-in replacement for an 18650 cell because the physical dimensions are different.
Technical Specifications
| Specification | Details |
| Model | 21700-4500mAh |
| Manufacturer | Hengdian Group DMEGC, New Energy Battery Division |
| Cell Type | Cylindrical lithium-ion cell |
| Nominal Capacity | 4500mAh @ 0.2C |
| Minimum Capacity | 4350mAh @ 0.2C |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Standard Charge | CC-CV, 0.5C to 4.2V, 0.05C cut-off |
| Standard Discharge | CC, 0.2C to 2.5V |
| Discharge Cut-off Voltage | 2.5V |
| Maximum Charge Current | 1C (not for cycle) |
| Maximum Continuous Discharge | 3C (not for cycle) |
| Internal Resistance | <30mΩ (ACIR) |
| Cycle Life | ≥80% capacity after 800 cycles (+0.5C/-1C, 25°C) |
| Operating Temperature | Charge: 0°C to 50°C; Discharge: -20°C to 60°C |
| Weight | <76g |
| Maximum Dimensions | Ø21.5mm × 70.75mm |
| Shipping State | 3.500–3.700V open-circuit voltage, ≤30% SOC |
Discharge Capability
According to the manufacturer's datasheet, relative capacity after discharge is:
- 0.2C: 100%
- 0.5C: ≥95%
- 1C: ≥93%
- 2C: ≥90%
- 3C: ≥88%
Temperature Performance
After charging at 25°C and discharging at 1C:
- -10°C: ≥80%
- 0°C: ≥85%
- 25°C: 100%
- 55°C: ≥95%
Applications
The manufacturer's datasheet specifies that the cell should be used in dedicated applications within its stated operating limits.
Typical applications for 21700 lithium-ion cells in this capacity range may include:
- E-bike and light electric mobility battery packs
- Portable power banks and electronic devices
- Cordless power tools
- Robotics and other battery-powered equipment
- Custom lithium-ion battery packs
- Battery pack rebuilding and assembly projects
- OEM battery pack applications
Before selecting this cell, verify that the application's continuous and peak current requirements are compatible with the cell's specified discharge limits.
Handling & Battery Pack Assembly Guidelines
Lithium-ion cells must be handled and assembled carefully. The manufacturer's specification includes the following precautions:
- Use a dedicated lithium-ion charger. Do not connect the cell directly to a mains power outlet.
- Use appropriate overcharge protection to prevent the cell from exceeding its specified charging voltage.
- Use suitable over-discharge protection to prevent the cell from falling below the specified discharge cut-off voltage.
- Provide appropriate overcurrent protection in the battery pack.
- Use spot welding with suitable nickel strip for pack assembly. Do not solder directly onto the cell body.
- Do not mix cells from different manufacturers, models, or different aged batches within the same pack.
- Inspect cells before assembly and check their voltage and internal resistance.
- Keep cells away from young children.
- For long-term storage of three months or more, store cells in a dry, cool environment at -20°C to 25°C and ≤70% relative humidity.
Always follow the manufacturer's latest specification and applicable battery-pack safety requirements when designing or assembling a pack.
Safety Disclaimer
Important Safety Information: This product is a bare rechargeable lithium-ion cell, not a finished battery or consumer-ready battery pack. Improper charging, short-circuiting, physical damage, overcharging, over-discharging, overheating, or incorrect assembly may result in fire, explosion, serious injury, or property damage.
- Use the cell only with a suitable charger, protection circuit/BMS, and properly designed battery pack.
- Do not short-circuit, crush, puncture, disassemble, or physically damage the cell.
- Do not use cells that are swollen, leaking, dented, damaged, overheated, or otherwise abnormal.
- Do not solder directly onto the cell body.
- Battery pack assembly should be performed by qualified or experienced personnel using appropriate equipment and safety procedures.
- Do not mix cells from different manufacturers, models, ages, or specifications unless specifically permitted by the manufacturer.
- Always operate, charge, store, and assemble the cell within the manufacturer's specified limits.
- Keep cells away from heat sources, flames, conductive objects, and children.
- Do not leave lithium-ion cells or battery packs charging unattended.
The specifications provided on this page are for reference and should not replace the latest manufacturer's datasheet, applicable safety standards, or professional engineering evaluation. The purchaser is responsible for ensuring that the cell and completed battery pack are suitable and safely designed for the intended application.
Always follow the manufacturer's latest safety instructions and applicable regulations when handling or assembling lithium-ion battery packs.
Why Choose Yati Infotech Solution?
Yati Infotech Solution Pvt. Ltd. offers DMEGC lithium-ion cells for customers involved in battery pack assembly, OEM applications, and lithium battery solutions.
Rather than relying on generic product claims, customers can refer to the manufacturer's stated specifications when evaluating this 21700 4500mAh lithium-ion cell for their application.
For current pricing, MOQ, stock availability, bulk-order requirements, dispatch timelines, technical assistance, GST invoicing, and warranty/replacement terms, contact Yati Infotech Solution Pvt. Ltd. directly for verified details.
Frequently Asked Questions
What is the DMEGC 21700 4500mAh lithium cell?
The DMEGC 21700 4500mAh lithium cell is a rechargeable cylindrical lithium-ion cell with a 4500mAh nominal capacity and 3.7V nominal voltage. It is supplied as a bare cell for battery pack assembly.
What are the capacity and voltage of the 21700 4500mAh cell?
The cell has a 4500mAh nominal capacity at 0.2C and a 4350mAh minimum capacity at 0.2C. Its nominal voltage is 3.7V, with a specified charge voltage of 4.2V and discharge cut-off voltage of 2.5V.
How should the DMEGC 21700 4500mAh cell be charged?
The specified standard charging method is CC-CV at 0.5C to 4.2V, with charging ending when the current reaches 0.05C.
The datasheet lists 1C as the maximum charge current, but this is not specified for cycle operation. Charging should be performed using a suitable dedicated lithium-ion charging system and within the specified temperature range of 0°C to 50°C.
How many cycles does the 21700 4500mAh cell last?
The manufacturer's specification states at least 80% capacity retention after 800 cycles under the specified test conditions: 25°C, 0.5C charging and 1C discharge.
Actual cycle life can vary depending on charging conditions, discharge rate, temperature, storage, pack design, and usage.
What is the maximum discharge current?
The datasheet specifies 3C as the maximum continuous discharge rate, with the note that this rating is not for cycle operation.
For pack design, appropriate overcurrent protection should also be incorporated according to the manufacturer's recommendations and the requirements of the finished battery pack.
Can a 21700 cell replace an 18650 cell?
No. A 21700 cell is not a direct drop-in replacement for an 18650 cell.
The 21700 format is physically larger, so the battery holder, enclosure, spacing, busbars, and overall pack layout must be designed for the 21700 dimensions.
The cell has maximum dimensions of approximately 21.5mm × 70.75mm.
Where can I find the DMEGC 21700 4500mAh cell datasheet?
The manufacturer's specification contains the technical information for this 21700 lithium-ion cell.
If Yati Infotech Solution has permission to host the manufacturer's document, a verified datasheet download link can be added to this product page.
Does the DMEGC 21700 4500mAh cell come with a warranty?
The manufacturer's datasheet describes a one-year warranty from the date of shipment, subject to its stated terms and exclusions.
Yati Infotech Solution's own warranty, replacement, and return terms should be confirmed directly with Yati before purchase.
What is the price of the DMEGC 21700 4500mAh lithium cell?
Pricing can vary based on quantity, stock availability, and order requirements.
Contact Yati Infotech Solution Pvt. Ltd. for the latest price, MOQ, and availability.
Get Your Quote from Yati
Looking for DMEGC 21700 4500mAh lithium-ion cells for battery pack assembly, OEM applications, or custom battery projects?
Share your required quantity and application with Yati Infotech Solution Pvt. Ltd., and the team can provide current pricing and availability.
Contact Yati today for a quote and product availability.