Please click here to download the Morningstar’s TrakStar™ MPPT Technology & Maximum Input Power white paper. With so many module manufacturers in the market, an extensively broad range of module choices are available to meet the needs of many different global markets. Morningstar’s MPPT controllers have a very wide voltage input range with which they can make use of these many modules for charging batteries in the off-grid market. However, finding the best fit and knowing how to correctly size them is sometimes challenging. This document discusses solar module sizing, and power ratings, and answers some of the more frequently asked questions in order to help make sense of the many options available on the market.