The UTL make rMPPT Charge Controllers are 30 % More efficient than normal charge controllers, as they employ Razor sharp Maximum Power Point Technology. The voltage at different point of times from Morning to evening varies and to tap it different input voltage selection for DC output source are required. MPPT does it accurately, so that you achieve maximum out of your investment in Solar panels. We employ both Perturb and Observe along with Incremental Conductance methods in parallel.