Description
46120 Lithium Iron Phosphate Cylindrical Battery Series | ATOMFAIRCOMMERCIAL GRADE · PRODUCTION
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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These lithium iron phosphate cells require storage in anti-static trays with terminal protection caps to prevent short circuits and physical damage during handling and transport. Charge voltage must not exceed 3.65V and discharge must not go below 2.0V to avoid irreversible capacity loss or safety hazards.
- Storage Environment: Store cells in a dry, cool environment away from conductive materials and moisture to prevent self-discharge and corrosion.
- Charge Voltage Limit: Maximum charge voltage is 3.65V ±0.05V; exceeding this can cause overcharge stress and reduce cycle life.
- Discharge Cutoff: Do not discharge below 2.0V to avoid deep discharge damage and potential cell failure.
- Cell Balancing Requirement: For series strings above 24V, active cell balancing is strongly recommended to maintain uniform state of charge across cells.
- Thermal Runaway Prevention: The olivine LiFePO4 cathode eliminates thermal runaway risk under nail penetration and overcharge conditions.
Required Equipment: Multimeter, Battery management system (BMS) with active balancing
- Inspect Cells
Inspect each cell for physical damage and verify that terminal protection caps are securely attached. - Measure Voltage
Measure open-circuit voltage of each cell to confirm it is above the minimum discharge cutoff of 2 V. - Configure BMS Cutoffs
Configure the battery management system with a charge cutoff voltage of 3 65 V and a discharge cutoff of 2 V. - Enable Balancing
Enable active cell balancing in the BMS when connecting cells in series strings above 24 V. - Assemble Pack
Assemble cells into the intended configuration using appropriate busbars and following standard practices for cylindrical cells. - Initial Charge
Perform an initial charge at a low rate of approximately 0 33 C to condition the cells before full use. - Monitor Temperature
Monitor cell temperatures during the first charge-discharge cycle to ensure they remain within the specified operating range of -20 °C to +60 °C.
How do the charge/discharge rate capabilities differ among the three 46120 LFP variants and which applications are each best suited for?
The AF46120LFP01 offers a 5C charge and 20C pulse discharge rate for high-power applications like UPS and power tools. The AF46120LFP02 provides 3C charge and 10C discharge, balancing rate for light EV/HEV use. The AF46120LFP03 delivers 2C charge and 3C discharge, optimized for stationary storage with the highest 28.5Ah capacity. Each variant is designed for specific operational demands as stated in the product description.
What are the critical voltage constraints and series string requirements for using 46120 LFP cells in a battery pack?
The cells have a nominal voltage of 3.2V, a maximum charge voltage of 3.65V ±0.05V, and a minimum discharge voltage of 2.0V. For series strings above 24V, active cell balancing is strongly recommended to maximize cycle life. Additionally, LFP's lower nominal voltage versus NCM requires BMS adjustment to ensure proper pack management.
What safety and handling precautions are required for the 46120 LFP cylindrical cells?
The olivine LiFePO4 cathode intrinsically prevents thermal runaway, withstanding nail penetration, overcharge, and external short circuit without fire or explosion. Safe charge temperature range is 0°C to 55°C, discharge from -20°C to 60°C, with optional self-heating for sub-zero operation. Packaging includes anti-static molded trays with cell separators and terminal protection caps for safe transport and storage.
The 46120 LFP series offers three optimized variants balancing power and capacity, with intrinsic safety from olivine cathode and >3000 cycle life, but requires careful voltage management due to lower LFP voltage and limited charge temperature range.
Positive
- Intrinsic safety from olivine cathode: LiFePO4 cathode withstands nail penetration, overcharge, and external short circuit without fire or explosion, eliminating thermal runaway risk.
- Extended cycle life exceeding 3000 cycles: All variants guarantee >3000 cycles to 70% capacity under standard 1C/1C at 25°C, with calendar life exceeding 15 years, reducing replacement frequency.
Trade-offs
- Lower voltage and narrow voltage window: LFP cells have a nominal voltage of 3.2V, lower than NCM, and require careful voltage management with maximum charge 3.65V and minimum discharge 2.0V, demanding active balancing for series strings above 24V.
- Limited charge temperature range: Charging is stable only from 0°C to 55°C; sub-zero charging requires optional self-heating, adding complexity and cost for cold environments.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
