Maxell, Ltd. has introduced an all-solid-state battery power module engineered to match the form factor and output characteristics of a lithium thionyl chloride (ER) battery. With a diameter of 17.9 mm and a height of 50.0 mm, the new module delivers a nominal voltage of 3.6 V—identical to standard ER cells commonly used in industrial equipment backup systems, smart meters and IoT sensors.
Unlike non-rechargeable ER batteries that require periodic replacement, Maxell’s module integrates eight mass-produced “PSB401010H” all-solid-state cells wired in parallel to achieve approximately 35 mAh of capacity. A built-in charging circuit accommodates a 5 V USB 2.0 Micro-B input and uses a 12-hour constant current/constant voltage protocol. The module operates reliably across a wide temperature range, from –20 °C to +125 °C during charging and –40 °C to +125 °C during discharge.
By offering a rechargeable drop-in replacement for ER batteries, Maxell aims to reduce maintenance intervals and downtime for industrial applications while extending equipment operating hours. The rechargeable design also curtails the volume of spent primary cells, supporting environmental objectives by minimizing battery waste.
Maxell continues to focus on enhancing all-solid-state battery performance across four key attributes: high reliability, thermal tolerance, high output and increased capacity. In parallel, the company is developing advanced modules that combine solid-state cells with wireless power transfer and energy harvesting technologies. These efforts are part of Maxell’s broader strategy to address social challenges, expand the applicability of solid-state batteries where traditional chemistries are unsuitable, and contribute to a sustainable energy ecosystem.
Source: Business Wire
