Description
8540140-15 High-Capacity Lithium-ion Battery Cell (15Ah) | ATOMFAIR
Product Overview
The 8540140-15 is a high-performance lithium-ion power cell featuring a substantial 15Ah capacity and stable energy delivery. Engineered for reliability, this cell meets rigorous safety standards, making it an ideal energy source for electric mobility, high-performance energy storage systems, and advanced scientific research applications. It operates on a stable lithium-ion chemistry platform, optimized for both continuous high-rate discharge and long-term shelf stability. For bulk inquiries or official volume quotations, please contact us via email at inquiry@atomfair.com.
Technical Specifications
| Parameter | Specification | Conditions / Remarks |
|---|---|---|
| Cell Model | 8540140-15 | / |
| Nominal Capacity | >= 15Ah | 0.5C, 25C, Fresh cell |
| Nominal Voltage | 3.8V | 0.2C, 25C |
| Work Voltage Range | 3.0V – 4.3V | / |
| Cell Dimensions | 8.5 x 40 x 140 mm | Thickness x Width x Length |
| Cell Weight | 120 +/- 3g | / |
| Max. Cont. Discharge Current | 2C (30A) | -20 to 45C |
| Max. Pulse Discharge Current | 5C (75A) | 10s @ 50% SOC |
| Cell Impedance (1kHz) | < 5 mOhm | 70% SOC, Fresh cell |
| Operating Temp (Discharge) | -20C to 45C | Charge: 10C to 45C |
Core Features & Advantages
High Capacity Density
Delivers a nominal capacity of 15Ah with a discharge energy of >= 52.06Wh at 0.2C, ensuring extended operation for high-demand systems.
Exceptional Power Delivery
Supports a maximum continuous discharge of 2C (30A) and pulse discharge up to 5C (75A) for robust instantaneous power response.
Advanced Safety Design
Rigorous compliance with safety tests including over-discharge, external short circuit, low pressure, and fall tests with no fire or explosion risks.
Slim Form Factor
The ultra-thin 8.5mm profile combined with high capacity offers exceptional space efficiency for custom battery pack integration.
Application Scope
- Electric Vehicles (EV/HEV)
- Electric Bicycles & Scooters
- Portable High-Power Equipment
- High-Energy-Density Power System R&D
- Unmanned Aerial Vehicles (UAVs)
- Renewable Energy Storage Prototypes
Accessories & Customization
Customization Services: We provide engineering support for custom PCM/BMS integration, nickel tab configurations, and series/parallel pack assembly.
Technical Note: For optimal performance, use a dedicated lithium-ion charger with CC/CV mode. Please contact us for detailed CAD drawings and step-by-step assembly guidelines for research purposes.
This document outlines critical safety and storage constraints for the 8540140-15 lithium-ion cell. Improper handling may lead to thermal runaway, fire, or personal injury.
- Voltage Window Compliance: Maintain the cell voltage between 3.0V and 4.3V during all phases of operation to prevent damage.
- Short Circuit Prevention: Avoid contacting the positive and negative terminals with any conductive material.
- Mechanical Integrity: Do not puncture, crush, or deform the pouch cell as it may cause internal short circuits.
- Fire Safety: Keep the cell away from flammable materials and never expose it to open flames or high heat.
Follow these steps to safely handle and charge the lithium-ion pouch cell for the first time. Proper initialization maximizes cycle life and safety.
Required Equipment: Constant current/constant voltage battery charger, Battery management system, Multimeter with voltage measurement function
- Inspect Cell
Inspect the pouch cell for any visible damage, swelling, or leakage before proceeding. - Measure Open Circuit Voltage
Measure the cell's open circuit voltage with a multimeter to ensure it is within the 3.0V to 4.3V range. - Connect to Charger
Connect the cell to a CC/CV charger set to a maximum voltage of 4.3V and an appropriate current rate. - Monitor Charging Process
Monitor the cell temperature and voltage during charging to ensure they remain within safe limits. - Disconnect after Charge
Disconnect the charger once the cell voltage reaches 4.3V and no further current flows.
How does the 15Ah cell's 2C continuous discharge limit of 30A constrain high-rate EV or UAV prototype designs compared to pulse-only applications?
The 2C continuous discharge (30A) is the sustained current ceiling; exceeding this risks thermal runaway or accelerated degradation. For pulse loads, the cell supports 5C (75A) for up to 10 seconds at 50% SOC, so designs requiring prolonged high current—such as continuous drone hover at >30A—must parallel cells or reduce duty cycle. The 8.5mm pouch format also limits passive heat dissipation, requiring active thermal management for sustained 30A draws.
Can the 8540140-15 cell be integrated directly into a 4.2V nominal Li-ion battery management system without modifying charge voltage thresholds?
No, the cell's nominal voltage is 3.8V with a charge cutoff of 4.3V, not the standard 4.2V for conventional Li-ion. A BMS designed for 4.2V max will undercharge the cell, leaving capacity untapped, and may not protect against over-discharge to the 3.0V floor. The BMS must be reconfigured to a 4.3V charge limit and a 3.0V discharge cutoff to safely utilize the full 15Ah capacity.
What storage and handling precautions are required for the 120g pouch cell to prevent mechanical damage or capacity fade during long-term lab storage?
Store at 50% SOC in a dry, inert environment at 10-25°C to minimize self-discharge and electrolyte degradation. The 8.5mm thin pouch is susceptible to puncture from sharp edges or stacking pressure; use anti-static foam trays and avoid compression beyond the cell's natural flat profile. Charge only within 10°C to 45°C as specified, and never discharge below -20°C to prevent lithium plating.
The 8540140-15 pouch cell offers a 15Ah capacity and 3.8V nominal voltage with a slim 8.5mm profile, ideal for space-constrained EV and UAV prototypes. Its high discharge rates (2C continuous, 5C pulse) support demanding loads, but users must address the restricted charge temperature range (10-45°C) and the pulse duration limit of 10 seconds at 50% SOC.
Positive
- High capacity in slim form factor: Delivers 15Ah nominal capacity with an ultra-thin 8.5mm profile, enabling space-efficient integration into battery packs for compact systems.
- Robust continuous and pulse power: Supports 30A continuous discharge (2C) and 75A pulse discharge (5C for 10s), providing strong instantaneous power for high-demand loads.
Trade-offs
- Narrow charge temperature range: Charging is limited to 10°C to 45°C, so thermal management is required to avoid performance degradation or safety risks in cold environments.
- Pulse discharge conditionally restricted: Maximum pulse discharge of 75A is only sustained for 10 seconds and requires at least 50% state-of-charge, limiting burst capability in depleted cells.
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).
