Description
DMEGC 20S 72V 31500mAh (31.5Ah) 20S7P 3C Lithium-Ion Rechargeable Battery Pack
The DMEGC 20S 72V 31500mAh (31.5Ah) 20S7P 3C Lithium-Ion Rechargeable Battery Pack is a high-capacity NMC Lithium-Ion battery pack designed for high-voltage electric mobility, energy storage, robotics, and industrial applications.
Built in a 20S7P configuration, the battery contains 140 cells, arranged as 20 series groups with 7 cells connected in parallel in each group. Using 4500mAh DMEGC cells, the pack provides 72V nominal voltage and 31.5Ah capacity, delivering approximately 2.268kWh of nominal energy.
This battery pack is suitable for 72V e-bikes, electric scooters, electric motorcycles, EVs, robotics, industrial equipment, energy storage systems, and custom OEM applications.
Key Features
- DMEGC Lithium-Ion Cells
- NMC Lithium-Ion Chemistry
- 20S7P Configuration
- 72V Nominal Voltage
- 31500mAh / 31.5Ah Capacity
- 140 Cells in 20S7P configuration
- 3C Cell Configuration
- Approximately 2.268kWh Nominal Energy
- Rechargeable Battery Pack
- High-Voltage Battery Design
- Suitable for EV & E-Mobility Applications
- BMS Protection Available
- Custom Connector & Enclosure Options
- Suitable for OEM & Custom Battery Manufacturing
20S7P Battery Configuration
The battery pack consists of:
20 Series × 7 Parallel = 140 Cells
Each parallel group:
7 × 4500mAh = 31500mAh (31.5Ah)
Nominal Voltage
20 × 3.6V = 72V
Maximum Charging Voltage
20 × 4.2V = 84V
Nominal Energy
72V × 31.5Ah = 2,268Wh
Therefore, the battery provides approximately 2.268kWh of nominal energy.
3C Lithium-Ion Configuration
The 3C specification refers to the discharge capability of the selected DMEGC cells. The 7P configuration increases the available current capability of each series group compared with a single cell.
The actual continuous and peak current rating of the finished battery should be determined according to the cell specifications, BMS rating, interconnect design, wiring, connectors, thermal management, and vehicle/controller requirements.
BMS Protection
A suitable 20S NMC BMS can provide:
- Overcharge Protection
- Over-Discharge Protection
- Over-Current Protection
- Short-Circuit Protection
- Cell Voltage Monitoring
- Cell Balancing
- Temperature Monitoring
- Charging & Discharging Protection
For this 72V-class battery, the BMS and charger should be specifically selected for a 20S NMC configuration. The maximum charger output should be 84V.
Applications
The DMEGC 20S 72V 31.5Ah Lithium-Ion Battery Pack is suitable for:
- 72V E-Bikes
- Electric Scooters
- Electric Motorcycles
- Electric Vehicles
- High-Voltage E-Mobility
- Robotics
- AGV Systems
- Industrial Equipment
- Portable Power Systems
- Energy Storage Systems
- Custom EV Battery Systems
- OEM Battery Applications
Advantages
- 31.5Ah high-capacity battery design
- 20S7P configuration
- 140-cell battery configuration
- Approximately 2.268kWh nominal energy
- 72V nominal / 84V fully charged
- DMEGC NMC lithium-ion cell configuration
- Suitable for high-voltage applications
- Multiple BMS options
- Custom wiring and connector options
- Suitable for OEM and bulk battery manufacturing
Package Includes
1 × DMEGC 20S 72V 31500mAh (31.5Ah) 20S7P 3C Lithium-Ion Rechargeable Battery Pack
