Dmegc - 18650 : 2900mAh Lithium Cell
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DMEGC 18650 2900mAh Lithium Cell
The DMEGC 18650 2900mAh Lithium Cell (INR18650-29E) is a rechargeable cylindrical lithium-ion cell designed for battery pack assembly, replacement applications, portable electronics, and OEM projects.
With a 2900mAh nominal capacity and 3.7V nominal voltage, this 18650 cell offers a practical balance of capacity, size, and performance for applications that require dependable energy storage in a compact format.
Price & MOQ: Request a quote for current pricing, MOQ, GST details, and bulk-order availability.
At a Glance
| Specification | Details |
| Capacity | 2900mAh nominal / 2800mAh minimum |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Maximum Discharge | 6A |
| Internal Resistance | Under 28 mΩ (ACIR) |
| Cell Size | 18.25 × 64.95 mm |
| Weight | Under 47g |
| Cell Format | 18650 cylindrical |
| Chemistry | Lithium-ion |
| Rechargeable | Yes |
Product Overview
The DMEGC 18650 2900mAh lithium cell is a standard cylindrical 18650 rechargeable cell intended for battery pack builders, repair professionals, OEMs, and other applications requiring a compact lithium-ion power source.
The 18650 designation refers to the cell's approximate physical dimensions—around 18mm in diameter and 65mm in length.
This is a bare lithium-ion cell, not a complete battery pack. When building a pack, the cell must be used with an appropriate charging system, protection circuit/BMS, and pack configuration designed according to the cell's electrical and thermal limits.
Key Features
- 2900mAh nominal capacity with 2800mAh minimum capacity
- 3.7V nominal voltage
- 4.2V charging voltage
- Maximum discharge capability of 6A
- Internal resistance of less than 28 mΩ (ACIR)
- Rated for at least 80% capacity retention after 1000 cycles under specified test conditions
- Charging temperature range of 0°C to 50°C
- Discharge temperature range of -20°C to 60°C
- Lightweight construction at under 47g per cell
- Standard 18650 cylindrical form factor
Key Benefits
Good Capacity in a Compact 18650 Format
With a rated capacity of 2900mAh, this cell can help achieve the required pack capacity without using as many cells as lower-capacity 18650 options.
Clearly Defined Operating Limits
The specified charge voltage, discharge limits, temperature ranges, and current ratings provide useful parameters for designing a suitable battery pack and protection system.
Rated for Long-Term Use
The cell is specified to retain at least 80% of its original capacity after 1000 cycles when operated under the manufacturer's stated test conditions.
Convenient for Pack Building and Replacement
The 18650 format is widely used in battery holders, pack assemblies, portable electronics, lighting products, and other applications, making it practical for both new pack construction and replacement work.
Technical Specifications
| Specification | Details |
| Brand / Maker | DMEGC |
| Model | INR18650-29E |
| Cell Type | Cylindrical rechargeable lithium-ion |
| Nominal Capacity | 2900mAh @ 0.2C |
| Minimum Capacity | 2800mAh @ 0.2C |
| Energy per Cell | Approximately 10.7Wh |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Charge Method | CC-CV, 0.5C to 4.2V, 0.05C cut-off |
| Standard Charge Current | 0.5C / 1.45A |
| Maximum Charge Current | 1C / 2.9A |
| Discharge Cut-off Voltage | 2.5V |
| Standard Discharge Current | 1C / 2.9A |
| Maximum Discharge Current | 6A |
| Internal Resistance | < 28 mΩ (ACIR) |
| Cycle Life | ≥80% capacity after 1000 cycles |
| Charging Temperature | 0°C to 50°C |
| Discharge Temperature | -20°C to 60°C |
| Diameter | 18.25 ± 0.20mm |
| Height | 64.95 ± 0.20mm |
| Weight | Under 47g |
Discharge Performance
The supplied specification lists the following relative-capacity performance:
| Discharge Rate | Relative Capacity |
| 0.5C | 100% |
| 1C | ≥95% |
| 2C | ≥90% |
| 3C | ≥85% |
Specification note: Terminal configuration (flat top or button top) and protection status should be confirmed before publishing the product listing.
Applications
The DMEGC 18650 2900mAh cell can be considered for a range of battery pack and portable-power applications, including:
- Custom lithium-ion battery packs
- Battery pack rebuilding and replacement
- Power banks
- Portable electronic devices
- Flashlights and lanterns
- LED lighting systems
- Emergency lighting
- E-bike and light electric mobility packs
- OEM battery pack projects
For higher-current applications, always calculate the required continuous current and configure enough cells in parallel to keep each cell within its rated limits.
Battery Pack Assembly & Safety Guidelines
Working with bare lithium-ion cells requires proper handling and suitable battery-pack assembly practices.
Use the Correct Charger
Always use a charger specifically designed for lithium-ion cells and set to the appropriate charging voltage. Never connect a bare cell directly to a mains power source.
Respect Voltage Limits
Do not charge the cell above its specified 4.2V charge voltage or allow it to discharge below the specified 2.5V cut-off voltage.
Control Charging Conditions
Avoid charging outside the specified temperature range. Charging under unsuitable conditions can affect cell performance, cycle life, and safety.
Use a Suitable BMS
For multi-cell battery packs, use a properly rated BMS/protection system with appropriate overcharge, over-discharge, short-circuit, and overcurrent protection.
Avoid Direct Soldering to the Cell
For pack assembly, spot-welding nickel strip is generally preferred for cell connections. Wires can then be soldered to the appropriate connection points rather than directly heating the cell terminals.
Match Cells Carefully
Do not mix cells with different capacities, models, ages, or conditions within the same battery pack unless the pack design specifically allows it and the cells are properly matched.
Store Cells Properly
For longer-term storage, keep the cells in a cool, dry environment and follow the manufacturer's recommended storage conditions.
Important Points Before Building a Battery Pack
Before assembling a pack, calculate:
- Required pack voltage
- Required capacity
- Number of cells in series
- Number of cells in parallel
- Expected continuous and peak current
- BMS voltage and current rating
- Charger voltage and current
- Cell temperature during operation
- Physical spacing and insulation requirements
For example, cells connected in series increase voltage, while cells connected in parallel increase available capacity and current capability.
Why Choose Yati Infotech Solution?
Yati Infotech Solution Pvt. Ltd. supplies lithium cells, BMS units, battery-pack components, and related materials for different battery-building requirements.
Customers can discuss their required cell quantity, application, pack configuration, and other project requirements before placing an order.
Yati can help with:
- Lithium-ion cells
- Battery pack components
- BMS solutions
- Pack-building materials
- Bulk requirements
- OEM and custom battery projects
Add only verified information regarding GST invoicing, dispatch timelines, warranty terms, years of business, and bulk-order support.
Frequently Asked Questions
Is the DMEGC 18650 2900mAh cell rechargeable?
Yes. The INR18650-29E is a rechargeable lithium-ion cell. It should be charged using a suitable lithium-ion charging system designed for a 4.2V-per-cell charging limit.
What is the capacity of the DMEGC 18650 2900mAh cell?
The nominal capacity is 2900mAh, while the specified minimum capacity is 2800mAh under the stated test conditions.
What is the voltage of this 18650 cell?
The cell has a 3.7V nominal voltage and a 4.2V charge voltage.
What is the maximum discharge current?
The specified maximum discharge current is 6A. The appropriate current for an actual battery pack depends on the pack configuration, operating conditions, and protection system.
How long can this lithium-ion cell last?
The supplied specification states at least 80% capacity retention after 1000 cycles under defined test conditions. Actual service life depends on charging, discharge rate, temperature, storage, and overall usage.
What is the difference between a 2600mAh and 2900mAh 18650 cell?
A 2900mAh cell has a higher rated capacity than a 2600mAh cell. This can provide longer runtime when the cells are used under comparable operating conditions, although the complete specifications should always be compared before selecting a cell.
What does 18650 mean?
The term 18650 refers to the standard cylindrical cell format. The name broadly represents a cell measuring approximately 18mm in diameter and 65mm in length.
Can this cell be used for battery packs?
Yes. It is a bare rechargeable lithium-ion cell intended for applications such as custom battery packs. A suitable BMS, charger, cell configuration, insulation, and assembly method are required.
Can I solder directly onto the cell?
Direct soldering onto a lithium-ion cell is generally not recommended because excessive heat can damage the cell. For battery-pack construction, spot welding is normally preferred for connecting nickel strips.
Can these cells be used in e-bike applications?
They may be suitable for certain light e-mobility and e-bike pack designs, provided the pack is correctly configured and the required current remains within the cell and BMS limits.
How should I choose the number of cells for my battery pack?
The required number depends on your target voltage and capacity. Cells connected in series increase voltage, while cells connected in parallel increase capacity and current capability. The complete pack should be designed around the cell's electrical and thermal limits.
What should I check before purchasing?
Check the cell model, capacity, voltage, discharge rating, internal resistance, physical dimensions, terminal type, condition/grade, packaging, and supplier documentation before placing a bulk order.
Get a Quote from Yati
Looking for DMEGC 18650 2900mAh lithium cells for a battery-pack project, replacement requirement, or bulk order?
Send Yati your required quantity and application details. The team can provide current pricing and availability based on your requirement.
Product Overview
DMEGC 18650 2900mAh Lithium Cell
The DMEGC 18650 2900mAh Lithium Cell (INR18650-29E) is a rechargeable cylindrical lithium-ion cell designed for battery pack assembly, replacement applications, portable electronics, and OEM projects.
With a 2900mAh nominal capacity and 3.7V nominal voltage, this 18650 cell offers a practical balance of capacity, size, and performance for applications that require dependable energy storage in a compact format.
Price & MOQ: Request a quote for current pricing, MOQ, GST details, and bulk-order availability.
At a Glance
| Specification | Details |
| Capacity | 2900mAh nominal / 2800mAh minimum |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Maximum Discharge | 6A |
| Internal Resistance | Under 28 mΩ (ACIR) |
| Cell Size | 18.25 × 64.95 mm |
| Weight | Under 47g |
| Cell Format | 18650 cylindrical |
| Chemistry | Lithium-ion |
| Rechargeable | Yes |
Product Overview
The DMEGC 18650 2900mAh lithium cell is a standard cylindrical 18650 rechargeable cell intended for battery pack builders, repair professionals, OEMs, and other applications requiring a compact lithium-ion power source.
The 18650 designation refers to the cell's approximate physical dimensions—around 18mm in diameter and 65mm in length.
This is a bare lithium-ion cell, not a complete battery pack. When building a pack, the cell must be used with an appropriate charging system, protection circuit/BMS, and pack configuration designed according to the cell's electrical and thermal limits.
Key Features
- 2900mAh nominal capacity with 2800mAh minimum capacity
- 3.7V nominal voltage
- 4.2V charging voltage
- Maximum discharge capability of 6A
- Internal resistance of less than 28 mΩ (ACIR)
- Rated for at least 80% capacity retention after 1000 cycles under specified test conditions
- Charging temperature range of 0°C to 50°C
- Discharge temperature range of -20°C to 60°C
- Lightweight construction at under 47g per cell
- Standard 18650 cylindrical form factor
Key Benefits
Good Capacity in a Compact 18650 Format
With a rated capacity of 2900mAh, this cell can help achieve the required pack capacity without using as many cells as lower-capacity 18650 options.
Clearly Defined Operating Limits
The specified charge voltage, discharge limits, temperature ranges, and current ratings provide useful parameters for designing a suitable battery pack and protection system.
Rated for Long-Term Use
The cell is specified to retain at least 80% of its original capacity after 1000 cycles when operated under the manufacturer's stated test conditions.
Convenient for Pack Building and Replacement
The 18650 format is widely used in battery holders, pack assemblies, portable electronics, lighting products, and other applications, making it practical for both new pack construction and replacement work.
Technical Specifications
| Specification | Details |
| Brand / Maker | DMEGC |
| Model | INR18650-29E |
| Cell Type | Cylindrical rechargeable lithium-ion |
| Nominal Capacity | 2900mAh @ 0.2C |
| Minimum Capacity | 2800mAh @ 0.2C |
| Energy per Cell | Approximately 10.7Wh |
| Nominal Voltage | 3.7V |
| Charge Voltage | 4.2V |
| Charge Method | CC-CV, 0.5C to 4.2V, 0.05C cut-off |
| Standard Charge Current | 0.5C / 1.45A |
| Maximum Charge Current | 1C / 2.9A |
| Discharge Cut-off Voltage | 2.5V |
| Standard Discharge Current | 1C / 2.9A |
| Maximum Discharge Current | 6A |
| Internal Resistance | < 28 mΩ (ACIR) |
| Cycle Life | ≥80% capacity after 1000 cycles |
| Charging Temperature | 0°C to 50°C |
| Discharge Temperature | -20°C to 60°C |
| Diameter | 18.25 ± 0.20mm |
| Height | 64.95 ± 0.20mm |
| Weight | Under 47g |
Discharge Performance
The supplied specification lists the following relative-capacity performance:
| Discharge Rate | Relative Capacity |
| 0.5C | 100% |
| 1C | ≥95% |
| 2C | ≥90% |
| 3C | ≥85% |
Specification note: Terminal configuration (flat top or button top) and protection status should be confirmed before publishing the product listing.
Applications
The DMEGC 18650 2900mAh cell can be considered for a range of battery pack and portable-power applications, including:
- Custom lithium-ion battery packs
- Battery pack rebuilding and replacement
- Power banks
- Portable electronic devices
- Flashlights and lanterns
- LED lighting systems
- Emergency lighting
- E-bike and light electric mobility packs
- OEM battery pack projects
For higher-current applications, always calculate the required continuous current and configure enough cells in parallel to keep each cell within its rated limits.
Battery Pack Assembly & Safety Guidelines
Working with bare lithium-ion cells requires proper handling and suitable battery-pack assembly practices.
Use the Correct Charger
Always use a charger specifically designed for lithium-ion cells and set to the appropriate charging voltage. Never connect a bare cell directly to a mains power source.
Respect Voltage Limits
Do not charge the cell above its specified 4.2V charge voltage or allow it to discharge below the specified 2.5V cut-off voltage.
Control Charging Conditions
Avoid charging outside the specified temperature range. Charging under unsuitable conditions can affect cell performance, cycle life, and safety.
Use a Suitable BMS
For multi-cell battery packs, use a properly rated BMS/protection system with appropriate overcharge, over-discharge, short-circuit, and overcurrent protection.
Avoid Direct Soldering to the Cell
For pack assembly, spot-welding nickel strip is generally preferred for cell connections. Wires can then be soldered to the appropriate connection points rather than directly heating the cell terminals.
Match Cells Carefully
Do not mix cells with different capacities, models, ages, or conditions within the same battery pack unless the pack design specifically allows it and the cells are properly matched.
Store Cells Properly
For longer-term storage, keep the cells in a cool, dry environment and follow the manufacturer's recommended storage conditions.
Important Points Before Building a Battery Pack
Before assembling a pack, calculate:
- Required pack voltage
- Required capacity
- Number of cells in series
- Number of cells in parallel
- Expected continuous and peak current
- BMS voltage and current rating
- Charger voltage and current
- Cell temperature during operation
- Physical spacing and insulation requirements
For example, cells connected in series increase voltage, while cells connected in parallel increase available capacity and current capability.
Why Choose Yati Infotech Solution?
Yati Infotech Solution Pvt. Ltd. supplies lithium cells, BMS units, battery-pack components, and related materials for different battery-building requirements.
Customers can discuss their required cell quantity, application, pack configuration, and other project requirements before placing an order.
Yati can help with:
- Lithium-ion cells
- Battery pack components
- BMS solutions
- Pack-building materials
- Bulk requirements
- OEM and custom battery projects
Add only verified information regarding GST invoicing, dispatch timelines, warranty terms, years of business, and bulk-order support.
Frequently Asked Questions
Is the DMEGC 18650 2900mAh cell rechargeable?
Yes. The INR18650-29E is a rechargeable lithium-ion cell. It should be charged using a suitable lithium-ion charging system designed for a 4.2V-per-cell charging limit.
What is the capacity of the DMEGC 18650 2900mAh cell?
The nominal capacity is 2900mAh, while the specified minimum capacity is 2800mAh under the stated test conditions.
What is the voltage of this 18650 cell?
The cell has a 3.7V nominal voltage and a 4.2V charge voltage.
What is the maximum discharge current?
The specified maximum discharge current is 6A. The appropriate current for an actual battery pack depends on the pack configuration, operating conditions, and protection system.
How long can this lithium-ion cell last?
The supplied specification states at least 80% capacity retention after 1000 cycles under defined test conditions. Actual service life depends on charging, discharge rate, temperature, storage, and overall usage.
What is the difference between a 2600mAh and 2900mAh 18650 cell?
A 2900mAh cell has a higher rated capacity than a 2600mAh cell. This can provide longer runtime when the cells are used under comparable operating conditions, although the complete specifications should always be compared before selecting a cell.
What does 18650 mean?
The term 18650 refers to the standard cylindrical cell format. The name broadly represents a cell measuring approximately 18mm in diameter and 65mm in length.
Can this cell be used for battery packs?
Yes. It is a bare rechargeable lithium-ion cell intended for applications such as custom battery packs. A suitable BMS, charger, cell configuration, insulation, and assembly method are required.
Can I solder directly onto the cell?
Direct soldering onto a lithium-ion cell is generally not recommended because excessive heat can damage the cell. For battery-pack construction, spot welding is normally preferred for connecting nickel strips.
Can these cells be used in e-bike applications?
They may be suitable for certain light e-mobility and e-bike pack designs, provided the pack is correctly configured and the required current remains within the cell and BMS limits.
How should I choose the number of cells for my battery pack?
The required number depends on your target voltage and capacity. Cells connected in series increase voltage, while cells connected in parallel increase capacity and current capability. The complete pack should be designed around the cell's electrical and thermal limits.
What should I check before purchasing?
Check the cell model, capacity, voltage, discharge rating, internal resistance, physical dimensions, terminal type, condition/grade, packaging, and supplier documentation before placing a bulk order.
Get a Quote from Yati
Looking for DMEGC 18650 2900mAh lithium cells for a battery-pack project, replacement requirement, or bulk order?
Send Yati your required quantity and application details. The team can provide current pricing and availability based on your requirement.