ST’s EnFilm™ thin-film batteries are a new concept of extremely thin (160 µm), rechargeable solid-state batteries with fast constant-voltage recharge and a lifetime of more than 10 years (4000 cycles).
They feature a LiCoO2 cathode, LiPON ceramic electrolyte and a lithium anode, so are completely safe from risks of burning or explosion.

Born from the last EnFilm technology generation, our standard battery – the EFL1K0AF39 – offers a lower internal resistance (-43% at 25°C) in a new eco-responsible packaging based on a ceramic substrate (Mica free), with a 25.8 x 28.8-mm footprint.

Our technology allows custom-sized developments, on demand.

EFL1K0AF39 evaluation kit and NFC power board now available

The design of solid state thin film battery EnFilm™ EFL1K0AF39 powered applications can now be evaluated and supported thanks to ST’s newly available kit and boards:

  • The new EFL2-NFC-PMB – EnFilm NFC power management board kit – includes a NFC contactless smart charger board and an EnFilm ultra-low current consumption power management solution – EFL1K0AF39 footprint-sized. The EFL2-NFC-PMB kit can be directly connected in the application for quick performance evaluation.
  • The EFL2-EVALKIT – EnFilm evaluation kit – includes the EFL2-NFC-PMB board as well as an EnFilm load board with analog ammeter and digital voltmeter that enable the discovery of the performance of the EFL1K0AF39 by monitoring the voltage and the dynamic charge / discharge current in real use-case conditions. It also includes a pulsed load emulator to simulate applications that wake from sleep mode periodically.

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