46145 LFP Cylindrical Battery Series 25-33Ah (2-Pack)

Price range: $45.00 through $55.00

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 46145 LFP cylindrical battery series: 3.2V nominal, capacities 25Ah/28Ah/33.3Ah, >3000 cycle life, 505 g weight. Order now.

Description

46145 Lithium Iron Phosphate (LFP) Cylindrical Battery Series (2-Pack)

COMMERCIAL GRADE · PRODUCTION

Product Overview

The ATOMFAIR® 46145 LFP (LiFePO4) cylindrical battery series delivers industry-leading safety, ultra-long cycle life, and flexible power options for demanding commercial energy storage and electric vehicle applications. Leveraging advanced nano-phosphate cathode technology and low-impedance tabless design, these cells provide exceptional thermal stability, intrinsic abuse tolerance, and outstanding cell-to-cell consistency. The series offers three optimized variants: high-power (AF46145LFP01, 5C/20C, 25Ah), balanced (AF46145LFP02, 3C/10C, 28Ah), and high-energy (AF46145LFP03, 2C/3C, 33.3Ah). Whether for heavy-duty EV traction, grid-scale storage, industrial UPS, or marine propulsion, the 46145 LFP platform delivers superior reliability and competitive pricing for scaled deployment.

Technical Specifications

PARAMETER VALUE
Model AF46145LFP01 AF46145LFP02 AF46145LFP03
Weight 505 ± 10 g 505 ± 10 g 505 ± 10 g
Nominal Voltage 3.2 V 3.2 V 3.2 V
Nominal Capacity (0.33C) 25 Ah 28 Ah 33.3 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

  • Ultra-Safe LFP Chemistry: Intrinsic thermal stability, zero risk of thermal runaway, and exceptional tolerance to overcharge/over-discharge — ideal for high-reliability applications.
  • Three Optimized Variants: Choose from high-power (AF46145LFP01, 5C/20C, 25Ah) for rapid acceleration and regenerative braking, balanced (AF46145LFP02, 3C/10C, 28Ah) for general EV and storage, or high-energy (AF46145LFP03, 2C/3C, 33.3Ah) for extended runtime stationary systems.
  • Extended Cycle Life: Exceeding 3000 cycles at 70% state-of-health ensures >10 years of service in daily cycling applications, significantly reducing total cost of ownership.
  • 46145 Format Advantages: Large-format cylindrical cells (46mm x 145mm) minimize passive components, simplify pack assembly, and improve thermal management compared to smaller form factors.

APPLICATION SCOPE: Heavy-duty electric vehicles (buses, trucks, AGVs), grid-scale energy storage systems, residential battery backup, industrial UPS, marine propulsion, and high-power two-wheeler modules.
PACKAGING: Industrial moisture-barrier cartons with anti-static dividers. Each cell is individually insulated. Packaging dimensions vary by model; contact sales for detailed specifications.
IMPORTANT NOTICE: To maximize cycle life, operate cells within recommended voltage window (2.5V – 3.65V) and avoid sustained operation at temperature extremes (>60°C or < -20°C). Always use a dedicated LFP BMS with cell balancing.

Frequently Asked Technical Questions

What are the differences between the three AF46145LFP models?

The AF46145LFP01 is optimized for high power (5C charge / 20C discharge, 25Ah) — suitable for rapid acceleration and regenerative braking. The AF46145LFP02 offers balanced performance (3C/10C, 28Ah) for general EV and storage. The AF46145LFP03 prioritizes energy density (2C/3C, 33.3Ah) for extended runtime in stationary storage.

What is the expected calendar life of these LFP cells?

Accelerated aging tests predict >15 years calendar life at 25°C, 80% SOH retention after 10 years under typical cycling profiles. LFP chemistry inherently resists calendar aging better than NMC.

Can I parallel different AF46145LFP variants in a single pack?

Mixing variants is not recommended due to different internal resistance and capacity profiles. For multi-string applications, use identical models per parallel group. Contact our engineering team for custom pack design support.

What safety certifications are available for this series?

All cells comply with UN38.3, UL 1642 (USA), IEC 62133-2:2021 (international), and CE. Batch-level test reports for nail penetration, overcharge, and thermal propagation are available upon request.

What is the recommended torque for terminal connections?

The 46145 cylindrical cells feature standard M6 threaded terminals. Recommended torque: 8–10 N·m for busbar connections. Use anti-oxidation paste on aluminum terminals to prevent galvanic corrosion.
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 cells in a cool, dry environment between -20°C and 45°C to preserve electrochemical stability and prevent capacity degradation. Maintain a non-condensing atmosphere and protect terminals from short circuits to mitigate thermal runaway risks.

  • Temperature Range: Avoid prolonged exposure above 45°C or below -20°C to prevent irreversible damage to the cell chemistry.
  • Moisture Sensitivity: Keep cells sealed in original packaging until use to prevent moisture ingress that can cause internal corrosion and capacity fade.
  • Short Circuit Prevention: Use insulated terminal covers and avoid contact with conductive materials during storage and handling to prevent electrical hazards.
  • Ventilation: Charge and discharge in well-ventilated areas to dissipate heat and safely vent any gases released in the event of malfunction.
  • Mechanical Integrity: Do not puncture, crush, or deform the cell casing to avoid internal short circuits and potential thermal events.

Inspect the battery cell for physical damage and verify open-circuit voltage before first use. Follow the recommended charging profile with a compatible LiFePO4 charger to ensure safe activation.

Required Equipment: Insulated gloves, Digital voltmeter, Certified LiFePO4 battery charger

  1. Inspect
    Inspect the cell casing for dents, swelling, or leakage before handling.
  2. Verify
    Verify the open-circuit voltage using a digital voltmeter to confirm it is within the acceptable range of 3.0V to 3.4V.
  3. Connect
    Connect the cell to a certified LiFePO4 constant-current/constant-voltage charger with appropriate current limits.
  4. Monitor
    Monitor cell temperature during charging, ensuring it does not exceed 60°C.
  5. Allow
    Allow the cell to rest for at least 30 minutes after charging before use.
  6. Store
    Store charged cells at 50% state of charge in a cool, dry location if not used immediately.

How does the trade-off between power density and energy density manifest across the three 46145 LFP variants for a 48V battery pack design?

The AF46145LFP01 high-power variant (25 Ah, 5C/20C) delivers maximum burst current for regenerative braking but sacrifices 25% energy capacity versus the high-energy AF46145LFP03 (33.3 Ah, 2C/3C). The balanced AF46145LFP02 (28 Ah, 3C/10C) provides a middle ground with 12% more capacity than the high-power cell while retaining 50% higher continuous discharge than the high-energy cell. All three share identical 3.2 V nominal voltage and 505 ± 10 g mass, enabling direct pack-level substitution based on duty cycle requirements.

Can the 46145 LFP cells be directly integrated into existing battery management systems designed for NMC or LTO chemistries?

No, these LFP cells require a dedicated BMS configured for a 2.5V to 3.65V operating window and LFP-specific charge profiles. NMC or LTO BMS units typically use different voltage thresholds (e.g., 4.2V or 2.8V) that would either underutilize the LFP capacity or risk over-discharge damage. The product description explicitly mandates a dedicated LFP BMS with cell balancing to maximize cycle life exceeding 3000 cycles at 70% state-of-health.

What are the critical storage and handling requirements for the 46145 LFP cells to prevent capacity fade before installation?

Cells must be stored in industrial moisture-barrier cartons with anti-static dividers, as provided in the packaging specification, to prevent humidity-induced degradation of the nano-phosphate cathode. Sustained storage above 60°C or below -20°C must be avoided to prevent irreversible capacity loss. Each cell is individually insulated during transport, and the recommended voltage window of 2.5V – 3.65V should be maintained even during storage to preserve cycle life.

The 46145 LFP cylindrical battery series delivers exceptional thermal stability, intrinsic abuse tolerance, and ultra-long cycle life across three power/energy-optimized variants, but requires strict voltage window (2.5V–3.65V) and temperature limits (<60°C or >-20°C) paired with a dedicated LFP BMS to achieve rated performance.

Positive

  • Ultra-Safe LFP Chemistry: Intrinsic thermal stability and zero risk of thermal runaway, with exceptional overcharge/over-discharge tolerance, making the series suitable for high-reliability commercial and industrial energy storage systems.
  • Extended Cycle Life: Exceeding 3000 cycles at 70% state-of-health yields a service life of over 10 years in daily cycling applications, significantly reducing total cost of ownership for grid-scale and EV deployments.

Trade-offs

  • Sensitive Voltage and Temperature Window: To maximize cycle life, cells must be operated within 2.5V–3.65V and avoided sustained exposure above 60°C or below -20°C, requiring precise thermal and electrical management in the pack design.
  • Requires Dedicated LFP BMS: Safe and optimal operation mandates a battery management system designed specifically for LFP chemistry with active cell balancing, adding system complexity and cost to each installation.

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

25 Ah, 28 Ah, 33.3 Ah