Compared with common 18650 cells with lower capacity, this High Capacity 18650 Cylindrical Lithium Ion Battery 3.7V 3000mAh provides additional runtime while maintaining the same cylindrical design concept. It helps product manufacturers increase operating hours without redesigning existing battery compartments.
The cell maintains a stable 3.7V voltage platform, making it suitable for applications that require reliable rechargeable power with moderate discharge requirements.
| Item | Specification |
| Model | 18650-3000mAh |
| Material | Li-ion Polymer Battery |
| Normal Capacity (0.2C) | 3000mAh |
| Minimum Capacity (0.2C) | 3000mAh |
| Energy | 11.1Wh |
| 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%) |
This 18650 3000mAh cylindrical cell adopts industry standard dimensions with great interchangeability, lowering difficulties for selection and assembly. The sturdy steel shell withstands vibration and mild extrusion, ideal for outdoor devices. It delivers a stable discharge voltage plateau with minor fluctuation under load for steady equipment operation. Rigorous cell sorting guarantees small deviation of capacity and internal resistance within batches for balanced battery packs. It supports steady moderate current discharge with decent cycle life. Protection circuits and diverse wire connectors can be equipped to meet various PACK assembly demands.
We provide full one-stop customized battery pack solutions to match different equipment requirements. Multiple assembly options are available for customers to select. You can choose bare battery cells, cells assembled with PCB and wires, units fitted with PCB, wires and connectors, or complete finished battery packs integrated with protection circuits, leads and terminals.
A wide range of customizable connectors are supported, including EH, PH, XH, SM, XT30, XT60, ZH, MOLEX and KET series with different pitches and pin counts. Meanwhile, we offer tailor-made PCB protection boards of various sizes and specifications. These PCBs deliver reliable functions such as overcharge, overdischarge, overcurrent and short-circuit protection.
Whether you need single-cell solutions or multi-cell combined packs, we can adjust wiring layout, dimensions and configurations according to your product structure. Flexible customization enables our batteries to fit diverse portable electronic devices perfectly.
The 18650 lithium-ion cell adopts a wound cylindrical internal structure. Its core components include cathode, anode and separator. The cathode stores lithium ions during charging, while the anode receives these ions. The porous separator sits between two electrodes to avoid direct contact and short circuits, allowing lithium ion passage.
All internal layers are tightly rolled and sealed inside a sturdy metal shell. The top is equipped with positive and negative terminals, together with a safety vent. The vent acts as a critical safety mechanism; it releases internal gas once abnormal pressure builds up inside the cell.
This coiled structure enables the 18650 cell to achieve stable discharge performance and good heat dispersion. The rigid metal casing offers reliable mechanical protection. Thanks to this mature structural design, 18650 cells deliver consistent cycle life and high safety, making them widely used for consumer electronics, power tools and customized battery packs.
Our 18650 lithium-ion cells are fully certified. We have obtained authoritative test documents including UN38.3, IEC62133, CE and CB, together with MSDS safety data sheets. Each cell passes rigorous safety tests and meets sea and air transportation standards. These certifications support market access for Europe, America, Southeast Asia, South Korea and other regions, simplifying customs clearance and providing complete documentation for all export orders.
A1: The 3000mAh version provides higher capacity, allowing devices to achieve longer working time while keeping the same standard 18650 size.
A2: Yes. Yideng supplies individual cells and supports customized battery pack assembly with PCM boards, wires and connectors.
A3: This model is designed for moderate discharge applications. Customers should confirm discharge current requirements before selecting the battery.
A4: Yes. Yideng supports customization including protection boards, wiring solutions, connectors and battery pack configurations.
A5: Each batch undergoes capacity grading, voltage checking, internal resistance inspection and aging testing to maintain consistent performance.
A6: Yes. Sample testing is available for customers who need to verify battery compatibility and performance before bulk purchasing.
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Xin'an Village industrial Park, Yonglejiang Town, AnrenCounty, Chenzhou City, Hunan Province, China
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