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BYD C81 CELL
The BYD C81 is described as a prismatic NCM lithium-ion cell with an aluminum housing. Its stated nominal voltage is 3.7V and capacity is 243Ah, giving an approximate calculated nominal energy of 899.1Wh per cell.
The cell is listed with a maximum continuous discharge current of 413A. Before battery pack integration, confirm the current-rating conditions, voltage limits, temperature requirements and the relationship between the C81 and supplier designation NMC-243D.
BYD C81 CELL
| Brand | BYD |
| Cell Model | C81 |
| Supplier Designation | NMC-243D, listed by NOGI; correspondence to C81 to be confirmed |
| Cell Chemistry | NCM lithium-ion |
| Cell Format | Prismatic cell with aluminum housing |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 243Ah / 243000mAh |
| Approx. Nominal Energy | 899.1Wh, calculated from 3.7V × 243Ah |
| Working Voltage Range | 2.5V to 4.25V; operating conditions to be confirmed |
| Maximum Continuous Charge | 311A; approx. 1.28C calculated from 243Ah; conditions to be confirmed |
| Maximum Continuous Discharge | 413A; approx. 1.70C calculated from 243Ah; conditions to be confirmed |
| Internal Resistance | Approx. 0.3mΩ; measurement method and conditions to be confirmed |
| Cell Dimensions | 66 × 220 × 105.5mm, thickness × length × height |
| Cell Weight | Approx. 3.45kg |
| Approx. Specific Energy | 260.6Wh/kg, calculated from 899.1Wh and approx. 3.45kg |
| Approx. Volumetric Energy Density | 587Wh/L, calculated from nominal energy and stated dimensions |
| Charge Temperature | 0°C to 50°C; measurement basis to be confirmed |
| Discharge Temperature | −20°C to 55°C; measurement basis to be confirmed |
| Storage Temperature | −20°C to 45°C; storage duration and conditions to be confirmed |
| Stated Cycle Life | ≥2,000 cycles; test conditions and capacity-retention threshold to be confirmed |
Confirm the applicable current, temperature and voltage conditions for the supplied cell. The stated 105.5mm height should also be checked against the dimensional drawing and terminal configuration.
BYD C81 CELL
01243Ah Nominal Capacity
The stated 243Ah capacity and 3.7V nominal voltage provide approximately 899.1Wh of calculated nominal energy per cell.
02Stated Continuous Current Ratings
The provided values are 311A maximum continuous charge and 413A maximum continuous discharge. Confirm the associated temperature and operating conditions for the supplied batch.
03Prismatic Aluminum Housing
The stated dimensions are 66 × 220 × 105.5mm, with an approximate weight of 3.45kg. Confirm terminal details and dimensional tolerances for module design.
04Cell-Level Specific Energy
Using the stated nominal energy and approximate weight, the calculated specific energy is approximately 260.6Wh/kg at cell level.
BYD C81 CELL
The C81 may be evaluated for custom mobility, industrial power or energy-storage battery projects where its capacity, verified current limits and dimensions meet the application requirements.
Before selection, confirm the C81 and NMC-243D designation relationship, current-rating conditions, terminal dimensions and available batch documentation. The finished pack requires an appropriately engineered BMS, electrical protection, current-rated interconnections and thermal management.
Explore more NCM prismatic cells, compare the CATL 239Ah prismatic NMC cell, or read about prismatic, pouch and cylindrical cell formats.
What is the stated maximum continuous discharge current?
The provided value is 413A, equivalent to approximately 1.70C using 243Ah. Confirm the temperature and other conditions associated with this rating.
How is the 899.1Wh nominal energy calculated?
The approximate nominal energy is calculated by multiplying 3.7V by 243Ah. Actual usable energy depends on operating conditions and system design.
What are the conditions for the stated cycle-life figure?
A figure of at least 2,000 cycles has been provided, but the test temperature, charge and discharge rates, depth of discharge and capacity-retention threshold have not been specified.
BYD C81 CELL
Misen can discuss cell sourcing and custom battery pack requirements based on the intended voltage, capacity, current profile and installation space.
When requesting a quotation, please provide your application, estimated quantity, pack configuration and operating requirements. Availability, cell condition, current specifications and applicable documentation are subject to confirmation for the offered batch.
For cell availability or a project discussion, please use the inquiry form on this product page.
