Product Specifications
| Model |
18650-3S2P |
| Nominal Voltage |
11.1V |
| Nominal Capacity |
5000mAh |
| Size |
Customized |
| Max Charge Current |
0.5C |
| Charging Method |
Constant current 1C to 12.6V, then charge with constant voltage 12.6V till charge current less than 0.01C |
| Max Discharge Current |
1C |
| Discharge Cut-off Voltage |
8V (over-discharge detection voltage of PCM) |
| Operating Environment |
Charging: 0°C~45°C, 65±20%RH
Discharging: -20°C~60°C, 65±20%RH |
| Storage Environment |
-20°C~45°C, 65±20%RH |
| Lifespan (80% Prime Capacity) |
>500 cycles |
Features:
Cell Type: 18650 cylindrical lithium-ion cell (diameter 18mm, length 65mm).
Packaging method: 3S2P (including Battery Management System (BMS) for overcharge, over-discharge, overcurrent, short circuit, and over-temperature protection).
Key parameters: Nominal voltage 11.1V, full charge voltage 12.6V, cut-off discharge voltage 9.0V; capacity 5000mAh (5.0Ah); Total energy = voltage × capacity = 11.1V × 5.0Ah = 55.5Wh.
Electrochemical and performance indicators:
Cell material: Mainstream is ternary material (NCM) (excellent safety, long cycle life, but nominal voltage needs to be matched with the equipment).
Cycle life: Standard NCM cells have ≥500 cycles (capacity retention ≥80%).
Main advantages:
High voltage and power consumption matching: 11.1V is the core nominal voltage for medium-sized portable devices, which can directly drive motors, high-power LEDs, power amplifiers, etc., without the need for complex boost converters/power supplies. Step-down circuit simplifies equipment design and reduces energy loss.
Dual advantages in capacity and energy, strong battery life: 5000mAh capacity + 55.5Wh energy.
Highly mature battery cells, excellent cost performance: The 18650 is the world’s largest mass-produced cylindrical battery cell, with a complete supply chain, good consistency, and controllable costs.
Excellent power performance, adaptable to multiple scenarios: Parallel structure increases the upper limit of discharge current, simultaneously meeting the dual requirements of “long battery life” and “high power”.
Safety and reliability are both ensured: Steel-cased battery cells + built-in BMS effectively avoid risks such as overcharging, over-discharging, and short circuits.
Application：
Portable power tools: Entry-level cordless drills, electric wrenches, mini grinders, lithium-ion screwdrivers, etc.
Consumer electronics and smart devices: High-end Bluetooth speakers (high-power models), handheld gimbals (professional grade), portable projectors, VR all-in-one machines (backup power), game controllers (long-lasting models).
Drones and model aircraft equipment: Small multi-rotor drones (aerial photography/… Toy-grade power supplies, power sources for model airplanes, remote-controlled cars and boats (high-power models), etc.
Portable energy storage and emergency equipment: Mini energy storage power supplies (outdoor camping/office backup), emergency jump starters (small devices), high-power emergency lights, portable air pumps, etc.
Medical and health equipment: Portable ventilators (home models), handheld ultrasound diagnostic instruments, mobile ECG monitors, electric wheelchairs (auxiliary power supplies), etc.
Security and law enforcement equipment: Mobile law enforcement recorders (high-definition, long-lasting models), wireless surveillance cameras (high-power gimbal models), portable security scanners, etc.
Other scenarios: Small service robots (backup power for robot vacuum cleaners), electric bicycles (auxiliary batteries), vehicle emergency equipment, etc.
