Description
BAK 2S 7.4V 65000mAh 2S13P 3C Lithium-Ion Battery Pack | Rechargeable NMC Battery
The BAK 2S 7.4V 65000mAh 2S13P 3C Lithium-Ion Battery Pack is a high-capacity rechargeable NMC lithium-ion battery pack designed for applications requiring a 7.4V-class power source with high energy storage and strong discharge capability.
This battery pack uses BAK 21700 5000mAh cells arranged in a 2S13P configuration, providing 65Ah / 65,000mAh capacity. The pack has a 7.4V nominal voltage and 8.4V maximum charging voltage.
With a 3C-rated cell configuration, the theoretical current capability is up to 195A. Actual continuous discharge capability depends on the cells, BMS, wiring, connectors, interconnections and thermal management.
Key Features
- Brand: BAK
- Battery Chemistry: NMC Lithium-Ion
- Cell Type: 21700
- Cell Capacity: 5000mAh
- Configuration: 2S13P
- Pack Capacity: 65Ah / 65,000mAh
- Nominal Voltage: 7.4V
- Maximum Charge Voltage: 8.4V
- Cell Discharge Rating: 3C
- Total Cells: 26
- Rechargeable lithium-ion battery
- High-capacity 65Ah configuration
- Suitable for high-current applications
- Custom BMS and connector options available
2S13P Battery Configuration
The battery contains 26 BAK 21700 cells arranged in a 2S13P configuration:
- 2 cell groups in series
- 13 cells in parallel
- 13 × 5000mAh = 65,000mAh / 65Ah
- 2 × 3.7V = 7.4V nominal
- 2 × 4.2V = 8.4V maximum charge voltage
- Nominal energy = 7.4V × 65Ah = 481Wh
The 13P configuration provides high capacity, while the 2S configuration establishes the 7.4V nominal pack voltage.
3C Discharge Capability
Based on the 65Ah pack capacity:
65Ah × 3C = 195A theoretical current
The actual allowable continuous current depends on the complete battery design, including:
- BAK cell specifications
- BMS current rating
- Nickel strip/busbar construction
- Wire gauge
- 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 and application requirements.
Connector & Wire
The battery can be supplied with application-specific connectors and wiring.
Possible options include:
- XT60
- XT90
- DC connectors
- JST connectors
- Custom power connectors
- Custom wire lengths
- Separate charging and discharge connectors
Applications
- Portable Power Equipment
- Robotics
- RC Systems
- Drones and UAVs
- Industrial Electronics
- Backup Power Systems
- Portable Instruments
- CCTV & Security Equipment
- Custom Lithium Battery Projects
- OEM Battery Packs
- High-Capacity Electronic Equipment
Advantages
- 65Ah high-capacity battery pack
- BAK 21700 NMC cells
- 2S13P configuration
- Approx. 481Wh energy capacity
- 3C-rated cell configuration
- Rechargeable lithium-ion technology
- Custom BMS and connector options
- Suitable for OEM and custom battery applications
Package Includes
- 1 × BAK 2S 7.4V 65000mAh 2S13P Lithium-Ion Battery Pack
- 2S BMS according to selected configuration
- Output/charging connector as specified
- 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, charging current, BMS rating and battery specifications before charging.
