The 18650 3.7V 5200mAh Rechargeable Lithium Ion Cylindrical Battery is a factory-assembled 1S2P battery pack from Yideng, designed for portable devices requiring longer operating time from a compact 3.7V power source. Combining two matched 18650 cells with customized protection circuits, wiring and connectors, this rechargeable lithium battery pack helps manufacturers simplify integration and reduce secondary assembly work. With stable capacity output, strict quality inspection and UN38.3 compliant shipping support, Yideng provides reliable battery solutions for global wholesalers, equipment manufacturers and OEM customers.
Many portable electronic devices require more energy without increasing the working voltage. The 18650 3.7V 5200mAh Rechargeable Lithium Ion Cylindrical Battery adopts a parallel cell configuration, combining two 2600mAh-class cylindrical lithium ion cells to achieve higher capacity while maintaining the standard 3.7V platform.
This structure increases available energy and improves continuous working time, making it suitable for equipment where frequent charging is inconvenient. Compared with single-cell solutions, the 1S2P design provides additional capacity while keeping compatibility with existing 3.7V battery systems.
The pack arrives as a finished power module, allowing customers to directly integrate it into their products without additional cell matching or welding processes.
Yideng provides more than standard battery supply. According to different equipment requirements, customers can customize:
- Protection circuit board configuration
- Wire length and specifications
- Connector types
- Output terminals
- Outer packaging design
Each battery pack is assembled according to defined electrical parameters to ensure reliable connection with the target device.
For new product development, customers can request samples for testing before mass production. This helps engineers verify size compatibility, runtime performance and protection functions during the design stage.
The 18650 3.7V 5200mAh Rechargeable Lithium Ion Cylindrical Battery is designed for repeated charging applications that require stable output and long service life.
During production, matched cylindrical cells are selected according to voltage, capacity and internal resistance. This reduces performance differences between individual cells and improves overall pack consistency.
The integrated protection system helps prevent common battery risks including:
- Overcharge
- Over-discharge
- Overcurrent
- Short circuit
Combined with aging inspection before shipment, the finished battery pack provides dependable power performance for daily-use electronic products.
| Item | Specification |
| Model | 18650-1S2P |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 5200mAh |
| Minimum Capacity (0.2C) | 5200mAh |
| Energy | 19.24Wh |
| Normal Voltage | 3.7V |
| Delivery Voltage | 3.7V ~ 4.2V |
| Standard Charge Method | Charge at maximum current. When the battery or pack terminal voltage reaches the charging limit voltage, charge at constant voltage until the charging current is less than or equal to 0.02 C, then stop charging. |
| Discharge Program | The battery or the battery pack carries on the constant current discharge with the maximum discharge current to the discharge termination voltage. |
| Max Charging Current | 1C CC/CV → 0.02C cutoff |
| Max Discharging Current | 1C CC/CV → 3.0V cutoff |
| Over-Discharging Current | 3.0V |
| Operation Temperature Range |
Charging: 0°C ~ 50°C Discharging: -20°C ~ 60°C |
| Allowable Maximum Surface Temperature |
Charging: Tmax ≤ 50°C Discharging: Tmax ≤ 60°C |
| Storage T/H Range (time) |
-20°C ~ 60°C (Less than 1 month) -20°C ~ 45°C (Less than 3 months) -20°C ~ 25°C (Less than 1 year) |
| Cycle Life |
≥ 300 times (Thickness expansion rate ≤ 10%) ≥ 500 times (Thickness expansion rate ≤ 12%) |
The 18650 3.7V 5200mAh Rechargeable Lithium Ion Cylindrical Battery is widely selected for portable equipment that requires higher capacity and rechargeable operation.
Typical applications include:
- Portable speakers
- Heated clothing and hand warmers
- Beauty devices
- Medical monitoring equipment
- Outdoor electronic products
- Walkie-talkies
- Smart portable instruments
Its balanced capacity, standard voltage platform and customizable assembly options make it suitable for manufacturers developing various battery-powered products.
Expansion of automatic cell production plants in Dongguan, Guangdong and Anren, Hunan in 2023
• After the expansion of production base in Dongguan, it's expected to reach the production capacity by 500,000 pieces/day.
• The first-phase expansion of the Anren Production Base is expected to reach the production capacity by 600,000 pieces/day.
• Second phase of the Anren production Base is newly established and expanded, with an estimated production capacity of 400,000 pieces/day.
The whole production capacity will reach 1,500,000 pieces/day.
A1: Please kindly send us an email specifying the items, quantity or other specification to place an order.
A2: We accept Paypal, Western Union, TT, L/C etc. Please do only pay to the official account.
A3: For our brand, normally 3 ~ 7 working days after payment; For OEM, 15 ~ 30 days after confirming the order.
A4: The samples will be shipped by HKDHL, UPS, TNT, DDP and so on.
A5: Yes, it's available. The OEM MOQ is 100,000pcs.
Address
Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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