True Blue Power Lithium-Ion Battery 43 Watt TS60 ThreadedThe True Blue Power TS60 series Emergency Battery Power Supply (EBPS) part numbers 6430060-4 are designed to supply DC power for aircraft emergency lighting when aircraft power failure occurs. During normal aircraft operation, the TS60 EBPS will utilize the aircraft’s power to recharge or maintain existing charge at full capacity. The TS60 is a sophisticated power system that utilizes state-of-the-art Nanophosphate® lithium-ion battery cell technology which provides improvements in performance, safety, life and weight when compared to traditional or competingaircraft battery systems.