Peltier Click Mikroe Peltier Click features the STMicroelectronics SPV1050 ultralow power energy harvester and battery charger. The Mikroe click charges lithium batteries using a thermoelectric energy harvesting device (TEG). According to the Seebeck effect, a TEG converts heat directly into electrical energy. This click is ideal for WSN, HVAC, building, and home automation applications. Other ideal applications include industrial control, remote metering, lighting, security, surveillance, wearable and biomedical sensors, and fitness.