Otii Power Profiling & Battery Toolbox

Qoitech AB is a Swedish developer of test tools for energy optimisation, battery testing and battery life prediction. It began in 2017 as a subsidiary of Sony Mobile Communications and spun out in 2019, and it helps hardware teams that build battery-powered IoT and embedded devices understand and cut power consumption.

The Otii Product Suite combines bench instruments and software. Otii Arc Pro and Otii Ace Pro are two-quadrant source measure units that power the device under test and record current from nanoamps up to 5 A, with Ace Pro adding isolation, up to 25 V and faster sampling. Recordings can be synchronised with UART debug logs. Software add-ons include the Battery Toolbox for profiling, emulation and life estimation, and the Automation Toolbox with a JSON-based TCP API for CI pipelines. Named users include Wirepas, Samsara, Philips, Sony and Deutsche Telekom.

• Otii Arc Pro: USB-powered two-quadrant SMU from 0.5 to 5 V with 5 nA resolution.
• Otii Ace Pro: isolated SMU up to 25 V with higher sampling rate and expansion port.
• Log synchronisation: current recordings aligned with UART debug output from the device.
• Battery Toolbox: battery profiling, emulation, runtime comparison and cycle testing.
• Automation Toolbox: JSON-based TCP API for scripts, CI and multi-instrument setups.
• Desktop software: shared Otii application for analysing and comparing recordings.

A Vietnamese IoT device maker can profile smart meter or tracker firmware to extend battery life before mass production. An EMS factory can add automated current checks to end-of-line tests. A university or R&D centre can use battery emulation to compare cells from different suppliers.

Engineers see exactly which firmware events drain the battery, because current measurements from nanoamps to 5 A are aligned with UART logs. Battery emulation and runtime estimation let teams compare cells and suppliers before field trials. Automated measurements in CI catch power regressions in every build. A free hardware tier can be used indefinitely, with toolboxes sold as perpetual licences or subscriptions.

Battery-powered IoT devices, wearables and satellite (NTN) connected sensors must run for years on small cells, so power profiling has moved from occasional lab checks into continuous testing. Electronics design and EMS activity is growing in Vietnam and Southeast Asia, and local teams increasingly need affordable tools to validate battery life for export customers.

Qoitech AB began in 2017 as a Sony Mobile Communications subsidiary and spun out in 2019. Named one of Sweden's 33 most innovative tech start-ups by Ny Teknik in 2022 and 2023. Customers in more than 70 countries; products sold through distributors such as Mouser.