This solar power management module is designed for 6 to 24V solar panels. It can charge the 3.7V LiPo battery via a solar panel or USB connection and provides a regulated 5V / 1A output. The module has a maximum power point tracking (MPPT) function and multi-protection circuits, so it can still operate highly efficient, stable and safe. It is suitable for solar powered, low power IoT and other environmental protection projects. - supports MPPT - supports solar panel / USB port battery charging. - integrated MPPT SET switch - two 5 V output interfaces: Pin header and USB connector - 14500 battery holder and PH2.0 battery connector - multiple LED indicators to monitor status of solar panel and battery Technical data - input voltage of the solar module (SOLAR IN): 6 ... 24 V bulletpoint# microUSB input voltage (USB IN): 5 V - pin header / USB output (USB OUT): 5 V / 1 A - charging end voltage: 4.2 V ±1% - deep discharge protection voltage: 2.9 V ±1% - solar module charging efficiency:: approx. 78% - USB charging efficiency: approx. 82% - 3.7 V battery boost power efficiency: approx. 86% - max. quiescent current: < 2 mA - operating temperature: -40 ... +85°C - dimensions: 65.2 × 56.2 × 22.9 mm Documentation and downloads can be found here: www.waveshare.com/wiki/SolarPowerManager https://elecena.pl/product/18402445/solar-mod-developer-boards-solar-charger-for-6-to-24-v-panels 2021-05-08 https://elecena.pl/product/18402445/solar-mod-developer-boards-solar-charger-for-6-to-24-v-panels 2026-02-20