The Topcon GR-5 GR-3 battery is a high-capacity lithium-ion battery designed for use with the Topcon GR-5 and GR-3 GPS receivers. It has a voltage of 7.2 volts and a capacity of 3900 milliampere hours (mAh), providing long battery life for even the most demanding applications. The battery is also lightweight and compact, making it easy to transport and carry.
