Maxell, Ltd. (President and Representative Director: Keiji Nakamura / hereinafter “Maxell”) has developed the "PSB401515H", a high-capacity ceramic packaged all-solid-state battery using a solid sulfide electrolyte, increasing side length to 15mm with double the capacity of existing product, which enables it to support various applications and situations. 

Recently, heat resistance and long life have been required for the purposes such as temperature sensing in the social infrastructure field or embedded equipment in the medical field, from the viewpoint of use under high temperatures and reduction of maintenance. At the same time, a battery with increased capacity is also required for this purpose as it is frequently used as power source for communications as well. 

Similarly, requests for high-capacity batteries are expected to extend over various fields, such as sensing applications of in-vehicle equipment and wearable devices. Maxell is consequently developing high-capacity batteries based on high energy density technologies. 

Features of PSB401515H

1. Realized 16mAh, double the capacity of existing product
2. Usable in a wide temperature range of -50°C to 125°C, and up to 105°C for 10 years^*2
3. Long lifetime characteristic (expected lifetime of more than 50 years*³ at 37°C) required for applications such as implantable devices 

Same as PSB401010H, this product will be produced at the new mass-production line to be built at Kyoto Works in the spring 2023. 

Maxell will continue to enhance battery lineup as well as to proceed with the development of modular component that combine all-solid-state battery with such technologies as wireless power supply and energy harvesting. 

*1. Double that of the existing product: comparison with PSB401010H.

*2. Usable at temperatures of up to 105°C for 10 years: Maxell’s life prediction result based on various evaluations and analyses.

*3. More than 50 years at 37°C: life prediction result calculated by adding temperature dependency to lifetime obtained by acceleration test. 

“All-solid-state battery” webpage

https://biz.maxell.com/en/rechargeable_batteries/allsolidstate.html