The 12V 6800mAh 3S2P 18650 Li-Ion Battery Pack is a rechargeable lithium-ion battery pack designed for compatible 12V portable electronics, robotics, LED systems, monitoring equipment, and DIY projects.
The battery uses a 3S2P configuration of 18650 lithium-ion cells and includes a built-in BMS / PCB protection board to provide essential battery protection during charging and discharging.
The pack has a nominal voltage of approximately 11.1V, reaches 12.6V when fully charged, and must be charged using a dedicated 12.6V CC/CV lithium-ion charger.
Key Features
- 3S2P 18650 lithium-ion battery configuration
- Nominal voltage approximately 11.1V
- Fully charged voltage 12.6V
- Rated capacity 6800mAh
- Built-in BMS / PCB protection board
- Maximum working current up to 3A
- Maximum instantaneous current up to 5A
- 5.5 × 2.1mm DC charging connector
- Rechargeable design
- Suitable for compatible portable 12V applications
- Requires a 12.6V lithium-ion CC/CV charger
3S2P Battery Configuration
The battery pack uses a 3S2P configuration.
3S means three lithium-ion cell groups are connected in series to increase the voltage.
2P means two cells are connected in parallel within each group to increase the available capacity and current capability.
This gives the pack a total configuration of six 18650 cells.
Battery Voltage
The voltage of a lithium-ion battery changes according to its state of charge.
-
Nominal Voltage: Approx. 11.1V
-
Maximum Fully Charged Voltage: 12.6V
-
Cell Configuration: 3S2P
The battery should therefore not be treated as a fixed regulated 12V power supply. Its output voltage changes as the battery charges and discharges.
6800mAh Rated Capacity
The battery pack is specified with a nominal capacity of:
6800mAh / 6.8Ah
This is the manufacturer's rated capacity for the complete battery pack.
Actual usable capacity and runtime can vary according to load current, operating temperature, cell condition, discharge cutoff, charging conditions, and age.
Built-In BMS Protection
The battery pack includes an integrated BMS / PCB battery protection board.
The protection board helps manage supported abnormal battery conditions and provides an additional level of safety for the lithium-ion cells.
A BMS does not replace the requirement for a proper lithium-ion charger.
Charging Requirements
This battery pack requires a dedicated 3S lithium-ion CC/CV charger.
Required charging specifications:
-
Charging Method: Constant Current / Constant Voltage (CC/CV)
-
Charging Voltage: 12.6V DC
-
Recommended Charging Current: 1A
-
Battery Chemistry: Lithium-Ion
-
Cell Configuration: 3S
A compatible charger may provide:
-
Red Indicator: Charging
-
Green Indicator: Fully Charged
Important Charging Warning
Do not charge this battery using a standard 12V lead-acid battery charger.
The battery requires a charger specifically designed for a 3S lithium-ion battery pack with a maximum charging voltage of 12.6V.
Using an incorrect charger can damage the battery and may create a serious fire or safety hazard.
Discharge Current
The specified discharge capabilities are:
-
Standard Discharge Current: 0.2C
-
Maximum Working Current: 3A
-
Maximum Instantaneous Current: 5A
The 5A value should be treated as a short-duration peak rating rather than the normal continuous operating current.
For continuous operation, keep the load within the specified 3A maximum working current.
Internal Resistance
The supplied specification lists the battery pack internal resistance as:
≤250mΩ
Actual internal resistance may vary with battery condition, temperature, state of charge, and cell characteristics.
Connections
The battery pack includes connections for charging and powering compatible equipment.
-
Charging Connector: 5.5 × 2.1mm DC Connector
-
Output Wiring: 22AWG
-
Output Wire Length: Approx. 150mm
Always verify connector polarity before connecting a charger or load.
Technical Specifications
-
Product Type: Rechargeable Li-Ion Battery Pack
-
Cell Type: 18650 Lithium-Ion
-
Configuration: 3S2P
-
Total Cell Count: 6
-
Nominal Voltage: Approx. 11.1V
-
Fully Charged Voltage: 12.6V
-
Rated Capacity: 6800mAh / 6.8Ah
-
Standard Discharge Current: 0.2C
-
Maximum Continuous Working Current: 3A
-
Maximum Instantaneous Current: 5A
-
Internal Resistance: ≤250mΩ
-
Protection: Built-In BMS / PCB Protection Board
-
Charging Method: CC/CV
-
Required Charging Voltage: 12.6V
-
Recommended Charging Current: 1A
-
Charging Connector: 5.5 × 2.1mm DC
-
Output Wire: 22AWG
-
Output Wire Length: Approx. 150mm
Approximate Energy Capacity
Based on the specified nominal voltage and rated capacity:
11.1V × 6.8Ah ≈ 75.5Wh
This is a theoretical value calculated from the manufacturer's stated nominal specifications. Actual usable energy will normally be lower and depends on the real cell capacity, load, BMS cutoff, temperature, and battery condition.
Typical Applications
Suitable for compatible applications such as:
- Robotics
- Portable electronics
- LED lighting
- CCTV equipment
- Monitoring systems
- DIY electronics
- Embedded systems
- Portable instruments
- Electronic prototypes
- Wireless equipment
- Battery-powered controllers
- Small portable projects
Important Voltage Compatibility Note
Although commonly described as a 12V battery pack, this is a 3S lithium-ion battery.
Its voltage is not fixed at exactly 12V.
The connected equipment must tolerate the battery's operating voltage range, including up to 12.6V when fully charged.
If your application requires a precisely regulated 12V supply, an appropriate DC-DC regulator may be required.
Safety Information
Lithium-ion batteries require proper handling and charging.
-
Use only a compatible 12.6V CC/CV 3S Li-Ion charger.
- Do not use a 12V lead-acid charger.
- Do not exceed the specified charging current.
- Do not exceed the specified discharge current.
- Do not short-circuit the battery.
- Do not reverse the polarity.
- Do not puncture, crush, disassemble, or modify the battery pack.
- Keep away from fire, excessive heat, water, and conductive objects.
- Do not use or charge a battery that is swollen, damaged, leaking, excessively hot, or physically deformed.
- Charge the battery in a safe location away from flammable materials.
- Do not leave the battery unattended while charging.
- Allow the battery to cool before charging if it becomes hot during use.
Package Includes
Charger and other accessories are not included.
Important Note
The 6800mAh capacity is the stated manufacturer rating. Actual measured capacity may vary depending on the cells used, operating conditions, load, temperature, age, and discharge cutoff.
For best performance and safety, use the battery only with equipment designed for a 3S lithium-ion battery pack and use a proper 12.6V CC/CV lithium-ion charger.
