The Omnergy LSC2440 rechargeable button cell battery is a compact 3.6 V lithium-ion coin cell designed to deliver reliable power to small electronic devices, offering a nominal capacity of about 35 mAh–40 mAh and a low internal resistance that enables stable performance with pulse currents up to ~400 mA, while its rechargeable construction supports many cycles (up to around 1000), making it suitable for use in portable gadgets such as pedometers, IoT sensors, POS terminals, tire gauges and other low-power applications where compact size and repeatable power delivery are important; with a wide operating temperature range (-40 °C to +90 °C) and lightweight design, this coin cell stands out as an efficient energy solution in miniaturized electronics.