ITEN Rechargeable Solid-State Micro-Batteries And Evaluation Boards

ITEN’s rechargeable micro-batteries are specified at 2.5 V and have a broad operating temperature range from -40°C to +85°C. The solid-state basis for ITEN’s micro-batteries makes them insensitive to short circuits, non-flammable, and recyclable. This increased level of safety during operation and handling also means they can be used within automated PCB assembly lines in the same way as other SMD components.

The basic range of ITEN micro-batteries is outlined in the table below:

Suggested applications
ITX121005B503.2 x 2.5 x 0.61.515 – 30Backup (RTC, µC),
PoS & terminals
ITX121010B1003.2 x 2.5 x 0.8330 – 40Backup (RTC, µC),
temperature loggers
ITX121025B2503.2 x 2.5 x 1.47.575 – 100Backup (RTC, µC,
DRAM), beacons
ITX181250B5004.5 x 3.2 x 2.315150 – 200Beacons & GPS.GSM
modules, wearables &
e-textiles, mobile
peripherals, nomadic devices

Since these batteries are made by stacking cells in much the same way as other batteries, custom options can be tailored to your application, down to a minimum thickness of 330 µm. This technology also enables extremely fast charging with low self-discharge rates and a lifetime of more than 2000 charge/discharge cycles at 75% depth of discharge (at room temperature).

The high energy storage density and lifespan from 10 to 20 years makes ITEN’s solution ideal for compact wireless IoT sensors for long-duration, low-maintenance installations. The ability to deliver high power and peak currents up to 200 mA (500 µAh device) fully supports RF transmissions under protocols such as Bluetooth, Zigbee, LoRa, Sigfox, NB-IoT, and LTE-M.

A preliminary datasheet for ITEN’s evaluation platform is available here, and this provides an indication of what can be expected when evaluating their micro-batteries.

This platform serves as a hat/shield for an STM32 Nucleo board (not included as part of the kit), and features a USB kit for Windows PC, an ITEN battery with power management and charging via USB port or an energy harvester, and programmable continuous and pulse loads. To simplify analysis, experimental data is output in a standard format that is compatible with Excel.

The ITEN micro-battery evaluation board allows an engineer to precisely monitor the load current (and voltage) of the battery with 10 nA to 100 mA real-time measurements. This can be performed while the battery is connected to a load or during charging/discharging, with up to 10 kHz sampling rate. Experiments are easily customisable for quick development of micro-powered systems, and testing duration can range from seconds to months. Example tests include RTC and energy harvesting solutions and qualification tests of the batteries at the intended deployment temperature.

A webpage on the ITEN website is also under construction for some modules, which may provide an alternative way of evaluating the technology, but for the time being, you can use the form below to apply to evaluate ITEN’s micro-batteries for use in a commercial application. Please specify if you are looking for a custom solution rather than the standard devices shown in the table.

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