Description
BAK 2S 7.4V 50000mAh 2S10P 3C Lithium-Ion Battery Pack | Rechargeable NMC Battery
The BAK 2S 7.4V 50000mAh 2S10P 3C Lithium-Ion Battery Pack is a high-capacity rechargeable NMC lithium-ion battery pack designed for applications requiring a 7.4V power source with high energy capacity and strong current capability.
This pack uses BAK 21700 5000mAh cells arranged in a 2S10P configuration. It provides 7.4V nominal voltage, 8.4V maximum charging voltage, and 50Ah / 50,000mAh capacity.
The 3C-rated cell configuration makes this battery suitable for applications requiring higher discharge capability, subject to the selected BMS, wiring, connectors and thermal management.
Key Features
- Brand: BAK
- Battery Chemistry: NMC Lithium-Ion
- Configuration: 2S10P
- Nominal Voltage: 7.4V
- Maximum Charge Voltage: 8.4V
- Capacity: 50Ah / 50,000mAh
- Cell Type: BAK 21700
- Cell Capacity: 5000mAh
- Cell Discharge Rating: 3C
- Total Cells: 20
- Rechargeable lithium battery pack
- High-capacity configuration
- Suitable for higher-current applications
- Custom BMS and connector options available
2S10P Battery Configuration
The battery contains 20 BAK 21700 cells arranged in a 2S10P configuration:
- 2 cells/groups in series
- 10 cells in parallel
- 10 × 5000mAh = 50,000mAh / 50Ah
- 2 × 3.7V = 7.4V nominal
- 2 × 4.2V = 8.4V full charge
- Nominal energy: 7.4V × 50Ah = 370Wh
The 10P configuration provides 50Ah capacity while the 2S configuration establishes the 7.4V nominal pack voltage.
3C Discharge Capability
Based on the 50Ah pack capacity:
50Ah × 3C = 150A theoretical current
The 150A figure is a theoretical calculation and should not automatically be treated as the guaranteed continuous discharge rating of the completed battery pack.
Actual allowable current depends on:
- BAK cell specifications
- BMS current rating
- Nickel strip/busbar design
- Wire size
- Connector rating
- Pack construction
- Operating temperature
- Thermal management
BMS Protection
A suitable 2S BMS can provide protection against:
- Overcharge
- Over-discharge
- Over-current
- Short circuit
- Cell imbalance
- Temperature-related conditions when temperature sensing is included
The BMS current rating should be selected according to the actual load requirements.
Connector & Wire
Connector and wiring can be customized according to the application.
Possible options include:
- XT60
- XT90
- DC connectors
- JST connectors
- Custom power connectors
- Custom wire length
- Separate charging and discharge connections
Applications
- Portable Power Equipment
- Robotics
- RC Applications
- Drones and UAV Systems
- Industrial Electronics
- Medical Equipment
- CCTV & Security Equipment
- Backup Power Systems
- Portable Instruments
- Custom Lithium Battery Projects
- OEM Battery Packs
Advantages
- 50Ah high-capacity battery
- BAK 21700 NMC cells
- 2S10P configuration
- Approx. 370Wh nominal energy
- 3C-rated cell configuration
- Suitable for high-capacity rechargeable applications
- Custom BMS and connector options
- Suitable for OEM and custom battery requirements
Package Includes
- 1 × BAK 2S 7.4V 50000mAh 2S10P Lithium-Ion Battery Pack
- 2S BMS according to selected configuration
- Output/charging connector according to specification
- Battery wiring and insulation
- Protective packaging/enclosure according to selected design
Important Charging Information
Use an 8.4V Lithium-Ion/NMC charger specifically designed for a 2S NMC battery pack.
Do not use a 12.6V charger, LiFePO₄ charger or another incompatible charger.
Always verify the charger voltage/current, BMS rating and battery specifications before charging.
