Maxell is developing an all-solid-state battery module compatible with a 1/2 AA-size (diameter 14.5 mm, height 25.2 mm) lithium thionyl chloride battery (hereinafter ER battery), along with a dedicated charger.
The dedicated charger will need to be tailored to the customer’s equipment.
The module is available in two versions:
- one capable of operating at temperatures up to 125°C and
- one capable of operating at temperatures up to 150°C.
Currently, ER batteries are widely used in industrial equipment backup systems, smart meters, and IoT devices. However, because ER batteries are non-rechargeable, periodic battery replacement and the disposal of used batteries present ongoing operational challenges.
The newly developed Maxell module integrates a wireless charging circuit, highly heat-resistant and highly reliable all-solid-state batteries, and a boost circuit into a 1/2AA-size, while delivering the same 3.6 V output voltage as conventional ER batteries.
When used in combination with the dedicated charger, the module enables a wireless charging capability to be added to existing equipment without requiring complex circuit design. The only caveat is that the wireless charging may be hampered by certain materials, although a full list has not been published yet.
By incorporating rechargeable all-solid-state batteries, the module helps reduce battery replacement work and minimise battery waste.
