NPP-1700 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-1700 is truly an intelligent, safe, and reliable universal dual-purpose charger and power supply with outstanding cost performance.