Brand New BT-52Q rechargeable battery pack for Topcon total stations, 7.2 volts 2700mah NI-MH (Nickel Metal Hydride). Will work with following instruments:

• GTS-210 series

• GTS-220 series

• GTS-230 series

• GPT-1000 series

• GPT-2000 series

• GPT-3000 series