Battery leakage current elimination in ups units

摘要: Aspects of the disclosure relate generally to uninterruptible power supply (“UPS”) units for systems requiring back up power. The UPS include circuitry controlling charging and allowing discharging a battery. includes controller as well pair metal-oxide semiconductor field effect transistors (“MOSFET”) switches. MOSFET switches in series with battery operating bidirectional switch. A unit may be charged subsequently stored period time. During this time, plurality features prevent current leakage from batteries. For example, PNP bipolar additional used leakage. These alone or combination allow long term storage without