NPP-750 is a miniaturized dual-purpose charger and power supply.In addition to being used as a three- stage charger for lead-acid batteries, it can also be used as a constant voltage output power supply to drive general load.The operating mode can be quickly switched by plugging or unplugging a connector on the front panel. Other features include: ultra-wide voltage output, adjustable voltage via VR on the panel (10.5~21V,21~42V,42~80V),adjustable charging current (50~100%), built-in intelligent fan with variable speed based on temperature to reduce noise and extend fan lifetime,-30~+70°C wide operating temperature, suitability for use in different environments,built-in remote ON/OFF control, compliance to IEC/EN/UL62368-1 and household EN60335-1/-2-29 dual safety, multiple built-in protections, and 3-year warranty.The NPP-750 is truly an intelligent, safe, and reliable universal dual- purpose charger and power supply with outstanding cost performance.