This battery pack provides a replacement solution of internal battery pack for the TST-600 wireless touch screen. The TST-600-BTP is a replacement Lithium-ion (Li-ion) rechargeable battery pack for the TST-600 wireless touch screen (and TST-600-WALL wall mount wireless touch screen). Replacement of battery pack must be performed by a Crestron qualified technician. Li-ion batteries must be stored at 50% charge and cycled every three months.