Introduction: A 76Ah NCM pouch cell specification becomes useful only when cycle life, charging temperature, discharge temperature, and storage temperature are read as separate limits.
A specification such as “≥1500 cycles” may look like a simple durability promise, while a temperature range may appear to describe every condition in which the cell can be used. Neither interpretation is complete. These figures describe performance boundaries established under particular conditions, and they do not automatically predict the service life of a finished battery pack. For readers studying a 76Ah NCM pouch cell, the important task is to understand what each number controls, where the boundaries differ, and why system design still matters.
Cycle life describes the number of completed charge-and-discharge cycles a cell can achieve before reaching a defined performance endpoint. That endpoint may involve a specified remaining capacity, voltage behavior, or another testing criterion. Therefore, “≥1500 cycles” in an NCM pouch lithium cell specification should be read as a qualified cycle-life figure, not as a direct statement that the cell will operate for a fixed number of years. One cycle also does not necessarily mean one day of use. A complete cycle represents the equivalent of using the defined amount of charge, even if that use occurs through several partial cycles. For example, two partial discharge events may together represent approximately one full cycle, depending on how the testing method counts them. The number alone cannot reveal how frequently a vehicle or device must be charged, how deeply it is discharged, or how much capacity remains at the end of the test. The missing conditions are important because electrochemical aging is affected by temperature, charge and discharge rates, voltage limits, depth of discharge, rest periods, and the capacity-retention threshold selected for the test. A cell tested under mild conditions may produce a different result from the same cell used in a demanding power pack. The cycle figure is still useful, but it is meaningful only together with the test protocol behind it. The Farasis P76 / FS-P76 is identified as a 3.7V, 76Ah NMC pouch cell with a stated cycle-life value of ≥1500 cycles. That makes it a practical example of how to read the specification: the number indicates a stated durability target or performance reference, but the available product information does not define the test temperature, current profile, depth-of-discharge window, or capacity-retention endpoint. It should not be converted into a guaranteed operating lifetime. The same distinction applies to the listed two-year warranty. A warranty period describes the seller’s stated coverage period and its conditions. It is not equivalent to a two-year cycle-life limit, nor does it prove that the cell will retain a particular capacity for the entire period. Warranty scope, exclusions, and performance thresholds require separate confirmation.
Temperature limits are separated because a cell experiences different electrochemical demands while receiving energy, delivering energy, or remaining idle. Combining the three ranges into one phrase such as “operating temperature” can hide the most important difference: the safest or most suitable range for charging may not be the same as the range for discharging.
The stated charge temperature for the Farasis P76 is -20 to 55°C, while the stated discharge temperature is -30 to 60°C. These are not interchangeable permissions. Charging changes the internal chemical state of the cell and can create different aging and safety concerns from those produced during discharge. Battery research commonly treats charging speed, temperature, aging, and safety as connected design variables rather than independent marketing claims. A charge limit of 55°C does not mean that charging at that temperature is equally desirable for routine use. It marks the listed upper boundary, while the actual charging strategy may be controlled by a battery management system, thermal sensors, current limits, and the battery-pack design. Similarly, the lower charging limit of -20°C should not be read as proof that every charger or system can safely begin charging whenever the cell is colder than normal room temperature. The system may need to restrict current, warm the cell, or delay charging. The discharge range extends from -30 to 60°C, but this does not mean that output, available capacity, aging rate, or power capability will be identical across the entire range. A cell can remain within a stated boundary while its practical performance changes with temperature. Mechanical enclosure, heat transfer, current demand, and neighboring cells can also cause the internal cell temperature to differ from the surrounding air temperature.
The stated storage temperature for this 76Ah NCM pouch cell is -20 to 55°C. Storage means the cell is not being used as an active source of charge or discharge power. It therefore describes a preservation condition, not an operating mode. A cell stored within that range may still require an appropriate state of charge, dry protection, physical protection, and periodic condition monitoring, depending on the system and the storage duration. Storage temperature should also be separated from the temperature of the warehouse, vehicle cabin, or shipping container. Local heating from sunlight, enclosed equipment, or nearby power electronics can create a cell temperature higher than the surrounding room. Conversely, cold conditions may affect the cell even when a nearby sensor reports a different ambient value. For a pouch cell, the finished pack also needs suitable mechanical support and thermal design; a temperature number by itself does not describe those integration requirements. Reading these three ranges as a sequence helps prevent a common error. First, ask whether the cell is being charged. Second, ask whether it is delivering energy. Third, ask whether it is idle. The applicable figure changes with the state of the cell, and the broadest numerical range should never be treated as a universal permission for every activity.
Temperature and cycle life influence one another because operating conditions determine how quickly the cell’s usable performance changes. Repeated charging near a listed upper boundary, prolonged exposure to high heat, deep cycling, and high power demand may create a different aging pattern from moderate operation. This does not mean the cell automatically fails when it reaches a boundary. It means that a boundary is a point requiring controlled operation and system-level evaluation, not a target for everyday use. For a light electric vehicle, electric tricycle, e-scooter, UAV, or custom battery pack, the relevant temperature is the cell’s actual temperature during the demanding part of the mission. Ambient weather may be only one factor. Charging immediately after a high-load journey, placing a pack in a poorly ventilated enclosure, or leaving a battery in direct sunlight can change the thermal conditions around the cell. The battery management system and pack design should therefore coordinate temperature sensing, charge control, discharge limits, balancing, and fault response. The NMC chemistry and pouch format also shape the interpretation. The Farasis P76 is presented as a high-capacity e-mobility power source, with 3.7V nominal voltage and 76Ah capacity. Its pouch construction may support weight and space objectives in suitable pack designs, but it does not remove the need for compression, insulation, electrical protection, and thermal planning. A cell specification describes the cell; it does not replace the engineering requirements of a complete battery pack. Cycle life is similarly a planning input rather than a promised calendar. A project evaluating a 76Ah NCM pouch cell should consider the expected daily energy throughput, charging pattern, usable state-of-charge window, seasonal temperature, and end-of-life capacity requirement. Without those conditions, it is not technically sound to translate ≥1500 cycles into a precise number of years or a fixed replacement schedule. For care and maintenance readers, the practical conclusion is straightforward: stay within the correct charge, discharge, and storage categories, avoid treating boundary values as preferred everyday targets, and interpret cycle life alongside the conditions that define it. Product information can establish the listed ranges, while the pack builder or system designer must determine how those ranges are controlled in the intended application.
The ≥1500-cycle figure, -20 to 55°C charge range, -30 to 60°C discharge range, and -20 to 55°C storage range describe different aspects of a 76Ah NCM pouch cell. Cycle life is a condition-dependent performance reference, and temperature figures are state-specific boundaries rather than proof of unlimited environmental use. The Farasis P76 specification is therefore best understood as a starting point for careful interpretation. Before applying it to an e-mobility or custom battery pack project, readers should connect the cell data with the actual thermal, charging, discharge, storage, and capacity-retention requirements.
Q：What does ≥1500 cycles mean in an NCM pouch cell specification?
A：It means the cell is stated to achieve at least 1,500 defined charge-and-discharge cycles under a particular test method and endpoint. Because the available specification does not state the test temperature, current, depth-of-discharge window, or capacity-retention threshold, the figure cannot be converted directly into a guaranteed number of years or a fixed real-world service life.
Q：Can charge temperature and discharge temperature be treated as the same limit?
A：No. The stated charge range is -20 to 55°C, while the stated discharge range is -30 to 60°C. Charging and discharging place different demands on the cell, so the applicable limit depends on the cell’s operating state. A battery management system and pack design should control both conditions separately rather than applying the wider discharge range to charging.
Q：Is storage temperature the same as operating temperature for this battery cell?
A：No. The stated storage range is -20 to 55°C for an idle cell, whereas operating conditions include active charging or discharging with different limits. Storage temperature should not be used as a universal operating range, and actual system planning must also consider state of charge, enclosure conditions, thermal monitoring, and the duration of storage.
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Farasis P76 76Ah NCM Pouch Cell | High Capacity E-Mobility Power Source
