Power interruptions are common in many areas. The best way to ensure reliable and continuous electricity service is with Powertek I Long Back Up UPS Power System. When utility power is on, the internal strong battery charger automatically keeps your battery bank fully charged and ready to go. If power fails, your Powertek I Long Back Up UPS instantly provides regular AC power from its battery bank to run your load. The energy for battery recharging can come from utility power, an AC generator or any DC source including solar panels. Powertek II Series is the most advanced, easy to use modified sine wave Long Back Up UPS for heavy loads available in the world. State of the art transformer and inverter design let you to run out the most powerful and critical industrial, telecom and medical loads today with a minimum investment.