The radio can run 8 hours on a high power of 4W and 11 hours on low power of 1W.
Motorola BPR40-U16-06 Mag One Portable Two-Way Radio (6 Radios) Its adjustable power level helps to save the battery life and adjusts the transmit power to accommodate the user environment. The BPR40-U16 operates on business exclusive frequencies of 450 - 470 MHz (UHF). The BPR40 meets military 810 C,D,E and F, IPX4 and EIA 603B for shock, rain, humidity, salt, fog, vibration, sand, dust, temperature shock on high and low temperature.