Secondary battery -40℃ Li-Polymer Lithium BA
Reliable battery performance that does not lose power even in extreme cold environments.
The lithium polymer battery developed by EEMB, designed to operate at -40°C, aims to provide reliable power performance even in extremely low-temperature environments. Typically, low temperatures lead to increased internal resistance and suppressed chemical reactions, resulting in reduced output. However, this model has demonstrated that it can discharge approximately 80% of its rated capacity even at -40°C, and maintain a charging efficiency of around 80% at -20°C, thanks to optimized manufacturing processes and materials. Additionally, the cell design incorporates a structure that suppresses extreme thermal expansion and contraction, as well as electrolyte freezing, ensuring long-term cycle durability and reliability (mitigating degradation due to temperature fluctuations). It is also capable of customized battery pack designs tailored to implementation constraints. This battery solution serves as the "last line of defense" in applications where power loss is unacceptable in low-temperature environments, such as cold region monitoring systems, polar exploration equipment, and refrigeration and logistics sensors.
basic information
- Ultra-low temperature discharge performance: Maintains 80% of rated capacity even at -40 °C, minimizing voltage drop in cold regions. - Chemical stability: Improved special electrolyte and anode materials suppress low-temperature viscosity increase. - Flexible design: Cell shape, capacity, and pack configuration can be designed according to application needs. - High safety: Adopts overcharge and over-discharge protection, and short-circuit prevention structure.
Price information
Please contact us separately.
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Model number/Brand name
EEMB
Applications/Examples of results
Cold Regions / Polar Applications: Antarctic observation devices, Arctic exploration rovers, snow mountain communication relays, unmanned observation points in mountainous areas Logistics & Cold Chain Monitoring: Temperature and humidity sensors during refrigerated/frozen transport, cargo tracking terminals Communication & Infrastructure: Base stations in cold regions, outdoor communication antennas, mountain relay devices Industry & IoT / Sensors: Flow sensors and environmental monitors operating under sub-zero conditions, cold storage monitoring Medical & Bio: Ultra-low temperature experimental devices, Peltier cooling module power supplies Military & Defense: Reconnaissance equipment for cold regions, environmental-resistant sensors, portable communication/monitoring devices
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News about this product（2）
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Introduction of EEMB's 3.7V high-capacity lithium polymer battery | Space-saving, thin pouch structure | Custom design inquiries accepted
We handle EEMB's 3.7V high-capacity lithium polymer batteries (Li-Po). With high energy density, they can secure a lot of power even in limited spaces, and their thin and lightweight pouch structure enhances design flexibility for devices. In addition to our standard lineup, we also accommodate custom dimensions and shapes, as well as custom designs for battery packs. 【Applications】 - Smartphones, tablets - Medical devices, card readers - Control devices, smartwatches - Power tools, IoT devices, etc. The nominal voltage is 3.7V. We have obtained various safety standards and certifications such as UN38.3 (transport), IEC/EN62133, UL1642, PSE, CE, KC, ISO9001/14001, and REACH (the applicable scope varies by product). If you let us know your intended use and environment, we can suggest specifications that meet your requirements.
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We have published a technical column "Differentiating Between Primary and Secondary Batteries" | Quick Reference Table of Differences / How to Choose Based on Applications / 5 Selection Criteria Checklist.
We have published a technical column titled "Differentiating Between Primary and Secondary Batteries" (A4, 4 pages, with illustrations). When choosing batteries, it is common to think that "being rechargeable is better," but what really matters in practice is whether to maintain the equipment through replacement or through recharging. This document organizes the differences between the two based on the direction of the reaction and summarizes a method for selecting based on application. [Contents] - Quick reference table of differences (charging/maintenance methods/amount of electricity lost during storage, etc.) - Selection method based on reverse lookup from applications (not used for long periods/daily charging/large current needed for short durations/difficult to replace when integrated) - Three common decision points that can cause confusion on-site and three frequent mistakes - Five items to check during selection (operating environment/current output/transportation and labeling regulations, etc.) This document organizes the general trends by type. Since specific specifications vary by product, please let us know your application and usage environment, and we will assist you in consulting on part numbers that meet your conditions.
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Intercompo Co., Ltd. is a company specializing in the import and sales of electronic components. As a specialized trading company operating in the advanced field of electronics, we have made efforts to provide components, information, and other services that meet the strong demands of the market, under the philosophy of being "a company that contributes to an internationalized society." Our company was founded in March 1972, celebrated its 50th anniversary in 2022, and obtained Level 3 certification for the Environmental Management System (EMS) Eco Stage in February 2025. Moving forward, we aim to further enhance and expand our domestic and international networks, cultivate each employee's sense of being a global citizen, and strive for rapid and accurate information collection and provision. We aspire to be a trading company that can accurately respond to the diverse needs of our customers and be of service to everyone. ■ What is Eco Stage? Eco Stage is an Environmental Management System (EMS) designed based on the principles of ISO 14001 (international standards), making it easy for small and medium-sized enterprises and supplier companies to implement and operate.