This DC power supply 36V 3A is built with the latest power supply technologies and the quality components materials to enable high performance. High-frequency AC-to-DC flyback converter with green-mode power-saving operation enables high power density and lowest no-load power consumption, to comply with latest efficiency standards including DoE Level VI. The 36V AC adapter features full protection to maximize the reliability include OLP(Over Load Protection), OVP(Over Voltage Protection), output short-circuit protection. The DC power supply 24V incorporates a pair of U shaped internal heat sinks to achieve efficient natural convection cooling that enables higher operating temperatures and reliability (see our UL/TUV certification). 42 volt ac adapter for battery charging is also available for use with 36V Lithium or Lead acid batteries. Product availability for the battery chargers can be found via the link here http://www.adapter-intai.com/product/lithium-ion-battery-recharger .