Solar Retrofit is an upgrade of Charge controllers which when connected to any existing UPS converts it into 100% Solar UPS without any change in electrical wiring of existing UPS. It has inbuilt intelligence to maximise use of solar energy to power your appliances. Solar Optimization Technique Luminous Solar Retrofit uses the Solar Optimization technique to extract minimum power from the mains and instead use solar energy to the maximum, for example if the battery is charged by only 70% till dusk the Solar Retrofit after analyzing the usage pattern will not charge the battery through the mains but will wait until dawn to do so, hence saving the electricity bill and optimizing the use of ecofriendly solar energy. LCD Display A user friendly LCD that displays important information like battery Charging Status, Charging Source, Total units savings etc. MCB Protection World class MCB ensures your UPS and connected loads stay protected from short circuits. Four Stage Charging The Solar Retrofit supports 4-stage smart charging to ensure fast, safe & efficient charging and longer battery life.