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| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Manufacturer | misenpower | Cell Model | TB-40138-HE-20Ah-LFP |
| Chemistry | Lithium Iron Phosphate (LiFePO4) | Cell Type | Rechargeable cylindrical cell |
| Nominal Voltage | 3.2V | Nominal Capacity | 20Ah at 0.5C, 25±3°C |
| Nominal Energy | Approx. 64Wh, calculated | Cell Weight | 420±10g |
| Cell Diameter | 40.9±0.1mm at seal; 40.7±0.1mm at middle | Cell Height | 140±0.5mm |
| AC Internal Resistance | ≤2.0mΩ at 1kHz, new-cell condition | Shipping Voltage | ≥3.2V and ≥15% SOC |
| Working Voltage Above 0°C | 2.5–3.65V | Working Voltage at or Below 0°C | 2.0–3.65V |
| Standard Charge Current | 0.5C / 10A at 25±2°C | Maximum Continuous Charge | 1.33C / 26.6A at 25±2°C |
| Charge Voltage / Cutoff Current | 3.65V CC-CV / 1A or 0.05C | Charge Temperature | 0–60°C with temperature-dependent C-rate limits |
| Standard Discharge Current | 0.5C / 10A at 25±2°C | Maximum Continuous Discharge | 3C / 60A at 25±2°C and SOC >30% |
| Peak Discharge Current | 4C / 80A for less than 5 seconds at 25±2°C and SOC >30% | Discharge Temperature | -20–65°C |
| Standard Cycle Life | ≥2,000 cycles at 0.5C/0.5C to ≥80% capacity | High-Rate Cycle Life | ≥1,500 cycles at 1C charge/1.5C discharge to ≥70% capacity |
The Topband TB-40138-HE is a high-power cylindrical lithium iron phosphate cell with a 3.2V nominal voltage, 20Ah capacity and approximately 64Wh of energy. It supports 60A continuous discharge and an 80A peak current for less than five seconds under specified SOC and temperature conditions. Its low resistance, broad discharge-temperature range and defined cycle performance support professionally engineered mobility, robotics and energy-storage systems.
The TB-40138-HE provides a 20Ah nominal capacity when tested at 0.5C between 3.65V and 2.5V at 25±3°C. Combined with its 3.2V nominal voltage, the cell delivers approximately 64Wh of energy for compact series-parallel battery modules requiring a balance of capacity and high-current capability.
The cell supports a maximum continuous discharge rate of 3C, equivalent to 60A, at 25±2°C when SOC remains above 30%. Its 3C room-temperature discharge test retains at least 90% of the initial capacity. Pack controls must prevent operation outside the specified SOC, temperature and voltage limits.
For short-duration power demand, the specification defines a 4C peak discharge current, equivalent to 80A. This value is limited to less than five seconds at 25±2°C and SOC above 30%. The BMS and fuse strategy must enforce the current, duration, temperature and SOC restrictions during real-world operation.
Standard charging uses 0.5C, or 10A, with CC-CV control to 3.65V and a 0.05C termination current. Maximum continuous charging reaches 1.33C, approximately 26.6A, at 25±2°C. Temperature-based charge mapping reduces the permitted current outside the 20–45°C range, and charging below 0°C is prohibited.
The permitted discharge-temperature range extends from -20°C to 65°C. Under the specified 1C low-temperature test, the cell retains at least 70% of initial capacity at -10°C and at least 60% at -20°C. At 65°C and 0.5C, the specified discharge capacity is at least 98% of initial capacity.
At 25±2°C, the cell is rated for at least 2,000 cycles using 0.5C charging and 0.5C discharging until capacity reaches 80% of rated capacity. A separate higher-rate profile specifies at least 1,500 cycles with 1C charging and 1.5C discharging until capacity reaches 70% of rated capacity.
Custom battery pack applications: The Topband TB-40138-HE may be evaluated for robotics, AGVs, power equipment, light electric vehicles, backup power and stationary energy-storage systems. Misenpower supplies battery cells and supports custom pack integration with a matched BMS, fuse protection, welded interconnects, voltage and temperature sensing, electrical insulation, cell spacing, cooling and mechanical restraint. Supporting CE, UN38.3, RoHS and UL documentation must be verified for the applicable cell batch, shipment and completed battery pack.
