Inverter Sine wave 810va inverter can run 4fans, 4tubelights & 1t.V. At a time and on full load it gives a backup of 3hrs. Features- 1.Pure sine wave- best choice for power sensitive equipment like dvd, computer, epbax, music system etc. No noise in fans, tube lights etc. Thd less than 3%. 2.Smps based chargers- peak current is very low therefore battery remains cool. The major problem of lower power factor has been successfully dealt with and hence less electricity bill to charge the batteries. Charging starts from 90 volts ac. 3.Intelligent battery management- with this boost based pwm controlled multistage charger the average current given to the battery is equivalent to the peak current given to the battery while charging. This in turn ensures less heating in the battery with longer life. 4.Deep discharge protection- protects battery from going into deep discharge condition and can also recover the deep discharge battery. 5.Ble (battery life enhancer) - remove sulphation and increase the life of the battery. Hence it increases the reliability of the product. 6.Zct technology- synchronized switchover from mains to backup and vice-versa, therefore no rebooting of computer. 7.Advanced microprocessors technique- very efficient use of microprocessor.