All of us are familiar with batteries, from the normal cylindrical cells for toys and remote controls, to the cuboid batteries often seen in digital and video comeras. Whatever the shape, batteries tend to be hard, inflexible and relatively heavy. This can make them awkward to use, especially if there’s a need to attach the battery to a person as it will need to be clipped on or placed in clothing. To address this problem, Finish firm Enfucell have developed a soft and flexible battery for use in medical applications. Andrew hears more from Anja, Enfucell’s Sales Director.

Unlike a normal alkaline battery, the thin and flexible SoftBattery is manufactured by screen printing and lamination, though in other respects it is similar using the reaction between zinc and manganese(IV) oxide (Zn/MnO2) to provide energy. Coming in both 1.5 V and 3 V versions, the SoftBattery is ideal for medical applications as the battery can be incorporated into a skin patch to measure ECG, respiration and activity while still being powerful enough to drive Bluetooth LE. As the battery is only used with one patient before disposal or recycling, there’s no risk of infection between patients.

The SoftBattery technology has been incorporated successfully into several products.

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