46120 LiFePO₄ Cylindrical Battery Series 28.5Ah

Price range: $7.00 through $9.00

Institutional Procurement & Supply Compliance: As a verified US supplier, Atomfair accepts formal institutional Purchase Orders (POs), contract billing schedules, and custom procurement loops for university and national laboratories, and corporate R&D departments globally.

Commercial-grade 46120 LFP cylindrical cell series with 3.2V nominal, >3000 cycles at 70% SOH, and 20C pulse rate. Ideal for energy storage and EVs. Order now.

Description

46120 Lithium Iron Phosphate Cylindrical Battery Series | ATOMFAIR

COMMERCIAL GRADE · PRODUCTION

Product Overview

The ATOMFAIR® 46120 LFP (LiFePO4) cylindrical cell series delivers industrial-grade, intrinsically safe lithium-ion batteries optimized for 46mm diameter platforms. Designed for commercial energy storage, low-speed electric vehicles, and high-frequency cycling applications, this series features three carefully balanced variants: high-rate (AF46120LFP01, 20C pulse), energy-optimized (AF46120LFP02), and high-capacity (AF46120LFP03, 28.5Ah). With ultra-stable olivine cathode architecture and >3000 cycle life at 70% SOH, these cells provide the most reliable foundation for fleet electrification and grid buffering. For bulk inquiries or official volume quotations, please contact us via email at inquiry@atomfair.com.

Technical Specifications

PARAMETER VALUE
Model AF46120LFP01 AF46120LFP02 AF46120LFP03
Weight 413 ± 10 g 428 ± 10 g 498 ± 10 g
Nominal Voltage 3.2 V 3.2 V 3.2 V
Nominal Capacity (0.33C) 28.5 Ah 20.7 Ah 22.9 Ah
Charge/Discharge Rate 5C / 20C 3C / 10C 2C / 3C
Cycle Life @70% Capacity >3000 cycles >3000 cycles >3000 cycles
Manufacturing Compliance: Fully traceable production under ISO 9001:2025 and IATF 16949 standards. Custom form factors or electrode formulations available upon request.

Key Features & Advantages

  • Absolute Safety: Olivine LiFePO4 cathode eliminates thermal runaway — withstands nail penetration, overcharge, and external short circuit without fire or explosion.
  • Three Optimized Variants: AF46120LFP01 (5C/20C) for high-power UPS/tools, AF46120LFP02 (3C/10C) for light EV/HEV, AF46120LFP03 (2C/3C) for stationary storage with 28.5Ah capacity.
  • Ultra-Long Cycle Life: All variants guarantee >3000 cycles to 70% capacity under standard 1C/1C at 25°C, with calendar life exceeding 15 years.
  • Wide Operating Temperature: Stable charge from 0°C to 55°C, discharge from -20°C to 60°C. Optional self-heating for sub-zero environments.
  • Flat Discharge Curve: 3.2V nominal with extremely flat voltage plateau simplifies BMS design and provides accurate SOC estimation.

APPLICATION SCOPE: Residential & commercial battery storage, low-speed electric vehicles (golf carts, e-scooters), UPS backup, telecom base stations, solar street lights, and high-frequency cycling R&D.
PACKAGING: Anti-static molded trays with cell separators (4 cells per tray, 100 cells per master carton). Terminal protection caps included.
IMPORTANT NOTICE: LFP cells have lower nominal voltage (3.2V) than NCM. Maximum charge voltage is 3.65V ±0.05V. Do not discharge below 2.0V. For series strings above 24V, active cell balancing is strongly recommended to maximize cycle life.

TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official institutional quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

Store these cells in a dry, temperature-controlled environment to prevent moisture condensation. Maintain terminal isolation to avoid accidental short circuits during storage and handling.

  • Voltage Range Constraint: Maintain cell voltage within the safe operating window to prevent irreversible capacity loss.

Inspect each cell for mechanical damage before use. Connect cells to a compatible battery management system for overcharge and overdischarge protection.

Required Equipment: Insulated gloves, Voltage meter

  1. Inspect Cells
    Inspect each cell for dents, swelling, or electrolyte leakage before handling.
  2. Verify Voltage
    Verify the open-circuit voltage of each cell is within the safe range using a calibrated meter.
  3. Connect to BMS
    Connect the cells to a battery management system configured for LFP chemistry before charging or discharging.

How does the 20C pulse discharge capability of the AF46120LFP01 variant affect cycle life compared to the high-capacity AF46120LFP03?

The AF46120LFP01 high-rate variant delivers a 5C continuous charge and 20C pulse discharge, while the AF46120LFP03 high-capacity variant is limited to 2C charge and 3C discharge. Despite this performance trade-off, both variants maintain >3000 cycles to 70% SOH under standard 1C/1C at 25°C, indicating that the high-rate design does not compromise cycle life under rated conditions.

Can the 46120 LFP cells be integrated into existing 18650 or 21700 battery pack architectures without redesigning the battery management system?

Integration requires BMS redesign due to the 46mm diameter form factor and 3.2V nominal voltage with an extremely flat discharge plateau, which simplifies SOC estimation but demands mechanical and electrical reconfiguration. The cells are optimized for 46mm platforms and are not drop-in replacements for smaller cylindrical formats.

What are the mandatory storage and handling requirements for the 46120 LFP cells to ensure safety and prevent capacity degradation?

Cells must be stored in anti-static molded trays with cell separators and terminal protection caps, as supplied in packaging of 4 cells per tray and 100 cells per master carton. The olivine LiFePO4 cathode eliminates thermal runaway risks under nail penetration, overcharge, or short circuit, but storage should be within the specified temperature range of -20°C to 60°C for discharge and 0°C to 55°C for charge to prevent capacity loss.

The 46120 LFP cylindrical series delivers intrinsically safe, long-cycle olivine cathode cells in three rate-optimized variants (20C pulse, 10C, 3C) suitable for commercial storage and light EV, though standard charging is restricted above 0°C and the 3.2V nominal voltage requires more series cells for high-voltage packs.

Positive

  • Intrinsically Safe LFP Chemistry: Olivine LiFePO4 cathode withstands nail penetration, overcharge, and external short circuit without fire or explosion, eliminating thermal runaway risk.
  • Application-Tailored Variant Selection: Three variants (AF46120LFP01/02/03) with charge/discharge rates from 5C/20C to 2C/3C and capacities up to 28.5Ah enable optimized power or energy density per use case.

Trade-offs

  • Charge Temperature Limitation: Standard charging restricted to 0°C–55°C; sub-zero charging requires an optional self-heating module, adding system complexity and cost.
  • Lower Nominal Voltage (3.2V): With 3.2V nominal, achieving higher system voltages requires more series cells compared to NMC or NCA chemistries, increasing pack complexity and BMS requirements.

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).

Additional information

Nominal Capacity

28.5 Ah, 20.7 Ah, 22.9 Ah