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.

We handle primary lithium batteries manufactured by EVE Energy. In addition to Li-SOCl2 batteries (lithium thionyl chloride) and Li-MnO2 batteries (lithium manganese dioxide), we offer a wide range of products including battery capacitors (SPC) that provide instantaneous high current, as well as ER+SPC solutions that combine primary batteries and capacitors. The nominal voltage for all of them is 3.6V. 【Applications】 - Smart meters - IoT devices, security devices, etc. Since specifications vary by model number, please let us know your application and usage environment, and we will suggest a model number that meets your requirements. For specific specifications, please refer to the manufacturer's datasheet.

We are accepting inquiries regarding samples and specifications of lithium thionyl chloride primary batteries (ER batteries). Please consider them as a power source for devices you want to use without maintenance for a long time. 【Applications】 - Smart meters, gas and water meters (operating for a long time without battery replacement) - IoT sensors, asset tracking and location devices - Disaster prevention and security equipment, industrial measurement and recording devices 【Features of ER Batteries】 - Nominal 3.6V primary battery (non-rechargeable type) - High energy density, compact size, and long lifespan - Wide operating temperature range and low self-discharge suitable for long-term storage Please let us know your application and usage environment (temperature, current, expected lifespan). We will suggest model numbers that meet your conditions. For detailed specifications, please refer to the related product page below.