Technical articles

Safety Design Guide for Series Connection of Button Batteries in Electronic Devices

Connecting button batteries in series can achieve higher voltage requirements but introduces risks such as polarity reversal, gas generation, and leakage. This article outlines key safety guidelines, circuit design considerations, and preventive measures -- including over-discharge protection and avoiding mixed cells -- to ensure reliability in compact devices.

Optimizing Battery Solutions for Medical Devices: The Superiority of Silver Oxide Technology

Series connection of button batteries is sometimes used to meet higher voltage demands, but it introduces risks such as polarity reversal, gas generation, and leakage. This article outlines essential safety guidelines, circuit design considerations, and preventive measures -- including over-discharge protection and avoiding mixed cells -- to improve reliability and safety in compact devices.

Technological innovations in galvanic cell-type oxygen sensors - Environmentally friendly oxygen sensors without using lead^∗1

Maxell has developed galvanic cell-type oxygen sensors without using lead, taking environmental considerations into account. By adopting alternative materials to lead and the originally developed weak acid electrolyte, they have achieved performance equivalent to conventional leaded oxygen sensors. This article introduces Maxell's new technological development and efforts in anticipation of the exemption for lead-free products under the European RoHS directive.

∗1 Lead content is less than or equal to 0.1wt% in each of parts (in a homogeneous material) comprising a product.

The origins of technological innovation
- History and basic principles of batteries

This article explains the basic fundamental mechanisms of chemical batteries, using the primary batteries that Maxell has developed, manufactured, and sold for many years as an example.

Realizing IoT society with CR cylindrical batteries
- Battery solutions suitable for LPWA communication devices

This article introduces the technological trends of Maxell CR cylindrical battery, which is suitable as a power source for LPWA communication devices drawing attention as appropriate communication methods for the IoT industry, as well as battery solutions that support the multi-functionality of communication devices.