Tripp Lites DC-to-AC inverter with automatic line-to-battery transfer and integrated charging system serves as a longer run UPS, a standalone power source or an automotive inverter. Provides as much as 2000 watts of continuing 120V AC power from any 12V battery or automotive DC source. OverPower TM inverter output feature quickly supplies as much as 150% of the continual output for 1-60 minutes, and DoubleBoost TM inverter output feature delivers as much as 2 hundred% of the continual output for as much as 10 seconds, providing the additional power had to cold get started heavy-duty tools and motorized equipment. When hardwire AC input is energized, commercial power passes thru to attached equipment and the battery set is recharged by means of 3 stage, 25/one hundred amp charging system. In UPS mode, the APS system responds to blackouts and voltage fluctuations with a close to instantaneous automatic transfer to battery-derived AC output. Features a set of prime current DC input terminals for easy installation (user Provides batteries and cabling – see owners manual for recommendations). Passes sine wave utility or generator power all the way through battery charging and UPS line power operation, plus efficient PWM sine wave AC output in inverter and UPS backup modes. Reliable large transformer design, with frequency regulate powers resistive electronic so much or large inductive motors, compressors and other items with prime current wishes on startup. Optional APSRM4 stressed remote power switch with full status LEDs supplies remote power inverter on/off switching and continuous status information (APSRM4 sold separate). Supports an infinite amount of runtime with any choice of user-provided batteries attached. Highly adaptable to quite a lot of applications and web page conditions with adjustable charger settings for wet/gel/SLA battery varieties and selectable line to battery power transfer voltages.