BAK 18650 3500mAh 3.6V Rechargeable Lithium Ion Battery Cell
BAK 18650 3500mAh 3.6V Rechargeable Lithium Ion Battery Cell
2. Product Description
BAK 18650 3500mAh Rechargeable Lithium Ion Battery Cell
The BAK 18650 3500mAh lithium-ion rechargeable battery cell is designed for battery pack development and a wide range of portable electronic and industrial applications.
Featuring a nominal voltage of 3.6V and a typical capacity of 3500mAh, this cylindrical lithium-ion cell provides a compact energy solution for manufacturers developing customized battery packs.
With a standard charging cut-off voltage of 4.20V and a discharge cut-off voltage of 2.50V, the cell supports defined charging and discharging requirements for battery pack integration.
For professional B2B buyers, battery pack manufacturers and OEM/ODM partners, this cell can be evaluated according to the required pack configuration, operating current, thermal design and application conditions.
Key Product Highlights
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3500mAh typical nominal capacity
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3.6V nominal voltage
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Standard 18650 cylindrical cell format
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Rechargeable lithium-ion chemistry
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4.20V charging cut-off voltage
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2.50V discharging cut-off voltage
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Suitable for customized battery pack development
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Available for technical evaluation and B2B sourcing
Applications
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Portable electronic equipment
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Customized lithium-ion battery packs
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Power tool battery pack development, subject to application validation
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Industrial portable equipment
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Battery-powered devices
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OEM and ODM battery projects
For bulk orders or customized battery pack projects, please contact EH with your required quantity, application, operating current and target configuration.
| Specification | Parameter |
|---|---|
| Brand | BAK |
| Cell Type | Cylindrical Rechargeable Lithium-ion Cell |
| Cell Format | 18650 |
| Typical Nominal Capacity | 3500mAh |
| Minimum Capacity | 3380mAh |
| Nominal Voltage | 3.6V |
| Charge Cut-off Voltage | 4.20V |
| Discharge Cut-off Voltage | 2.50V |
| Maximum Charge Current | 1C* |
| Maximum Discharge Current | 3C* |
| Internal Resistance | ≤35mΩ (AC, 1000Hz) |
| Maximum Diameter | 18.55mm |
| Maximum Height | 65.10mm |
| Standard Charge Temperature | 25 ± 2°C |
| Standard Discharge Temperature | 25 ± 2°C |
*规格书注明：最大充电及放电电流参数为25°C条件下的参数，不支持据此承诺循环寿命。实际工作电流、温升和寿命应按具体应用验证。
Standard Charging Method
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Charge at 0.5C constant current to 4.2V.
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Continue constant-voltage charging at 4.2V until current decreases to 0.01C or below.
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Rest for 5 minutes.
Standard Discharging Method
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Discharge at 0.2C constant current to 2.5V.
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Standard test temperature: 25 ± 2°C.
Important Technical Note
The maximum current ratings should not be interpreted as recommended continuous operating currents for long-term cycling. Battery pack design must consider cell matching, protection circuitry, thermal management and application-specific validation.
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2. Product Description
BAK 18650 3500mAh Rechargeable Lithium Ion Battery Cell The BAK 18650 3500mAh lithium-ion rechargeable battery cell is designed for battery pack development and a wide range of portable electronic and industrial applications. Featuring a nominal voltage of 3.6V and a typical capacity of 3500mAh, this cylindrical lithium-ion cell provides a compact energy solution for manufacturers developing customized battery packs. With a standard charging cut-off voltage of 4.20V and a discharge cut-off voltage of 2.50V, the cell supports defined charging and discharging requirements for battery pack integration. For professional B2B buyers, battery pack manufacturers and OEM/ODM partners, this cell can be evaluated according to the required pack configuration, operating current, thermal design and application conditions. Key Product Highlights-
3500mAh typical nominal capacity
-
3.6V nominal voltage
-
Standard 18650 cylindrical cell format
-
Rechargeable lithium-ion chemistry
-
4.20V charging cut-off voltage
-
2.50V discharging cut-off voltage
-
Suitable for customized battery pack development
-
Available for technical evaluation and B2B sourcing
-
Portable electronic equipment
-
Customized lithium-ion battery packs
-
Power tool battery pack development, subject to application validation
-
Industrial portable equipment
-
Battery-powered devices
-
OEM and ODM battery projects
1. 3500mAh Typical Capacity
A 3500mAh typical nominal capacity provides a compact cylindrical cell solution for battery pack design and portable power applications.
2. Standard 18650 Cell Format
The cylindrical 18650 format supports integration into battery pack designs where this cell size and electrical specification are suitable.
3. Defined Operating Voltage
With a nominal voltage of 3.6V, the cell provides a defined electrical basis for battery pack configuration and system evaluation.
4. Rechargeable Lithium-Ion Technology
Designed as a rechargeable lithium-ion cell for applications requiring a rechargeable energy source.
5. Technical Parameters for Pack Design
Documented voltage, capacity, charging and discharging parameters help battery pack engineers evaluate the cell during product development.
6. B2B Project Cooperation
EH supports communication with battery pack manufacturers, distributors and OEM/ODM buyers regarding product specifications, samples and bulk sourcing requirements.
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YiFang specializes in batteries, chargers, battery packs, and power solutions, including Li-ion, LiMn (IMR), Ni-MH, and LiFePO₄ batteries.
Does YiFang provide OEM/ODM services?
Yes, we offer flexible OEM and ODM customization, including product design, specifications, and packaging to meet your exact requirements.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What is YiFang’s production capacity?
YiFang operates its own factory with automated production lines, producing up to 100,000 units daily, ensuring consistent quality and timely delivery.
How can I contact YiFang for orders or inquiries?
You can contact us via our website inquiry form, email, or phone. Our team is ready to provide professional guidance and customized solutions.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What industries use YiFang products?
Our products are widely used in e-cigarettes, UAVs, balance scooters, electric bikes, electronic equipment, toys, flashlights, and other commercial and industrial applications.
What warranty and after-sales support does YiFang offer?
We provide 6–12 months warranty, responsive customer support, and global insurance coverage for long-term reliability and customer peace of mind.
