Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > Power/Alternative Energy
Power/Alternative Energy??

Paper-thin rechargeable batteries last 10 years

Posted: 25 Jun 2014 ?? ?Print Version ?Bookmark and Share

Keywords:rechargeable batteries? lithium? Internet of Things?

STMicroelectronics began making the paper-thin EnFilm advanced rechargeable batteries. Less than 0.25mm thick, these batteries free designers from the constraints of standard battery sizes and are ideal for use in powering the next generation of personal technology and Internet of Things (IoT) devices.

At just 220?m thick and measuring 25.7mm x 25.7mm, ST's EFL700A39 EnFilm solid-state lithium thin-film battery is perfectly suited for use in ultra-low-profile devices. Surface-mount terminals allow direct attachment to the circuit board, which simplifies assembly and eliminates wires and connectors. Optional tape-and-reel packaging allows high-speed automated placement.


With 3.9V nominal voltage and 0.7mA capacity, the EFL700A39 can power a wide range of applications. Its lithium technology recharges rapidly from a 4.2V charging circuit and displays low capacity loss as well as long cycle life allowing some 10 years of use if charged once per day. The EFL700A39 is RoHS compliant and Underwriters Laboratories certified, satisfies United Nations tests and criteria for battery transportation, meets IEC 62133 safety specifications, and meets the ISO7816/IEC10373 mechanical and flexibility standards for smart cards.

ST is ready to fulfil orders for engineering samples and small production quantities, targeting applications including wireless sensor nodes, RFID tags, smart cards, wearable technology, non-implantable medical monitors, and back-up or storage for energy-harvesting devices. The unit price is $30 for orders of five units.

Article Comments - Paper-thin rechargeable batteries la...
*? You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.

Back to Top