During continuous monitoring of SpO2 and temperature, with an Interval BP set for every 5 minutes, a fully charged battery should last at least 4 hours before requiring recharging. If only taking manual BP measurements, a fully charged battery should last for at least 150 BP measurements before requiring recharging. Fully charging the battery should take under 6 hours. Battery life is very dependent on the touch screen display ON time. To maximize life, SunTech suggests setting the Auto OFF timer to 1 minute.