PM / NBU / MIC 07/24/2002 Voice Recording Hardware Reset Switch System Reset button Indicator Color LED for Charge – Yellow ( Static ) Notification – Red ( Blinking ) Type Un-swappable Lithium Ion, 900mAh Active 8 hours (fully charged main battery,) Suspend 14 days (fully charged main battery,) Battery Shut Down Retain memory state for a minimum of 72 hours after low battery shut down Charger Charger module Charging Time 2.5 ~ 3 hours ( single battery pack ) Input 100~240VAC Output 5VDC, 1A AC to DC Adapter