The TS-MPPT has been successfully used with Lithium type batteries and can be custom configured to work with a variety of battery types. Specific charge configuration requirements such as Absorption voltage and duration, Float voltage, etc., should be discussed and verified with the battery manufacturer." The "Morningstar TriStar MPPT Installation and Operation Manual" also includes a chart of compatible battery chemistries: Gel, Sealed, AGM/Flooded, Flooded, and L-16.