... an 800 MAH battery for long lasting operation without external power. Harsh-weather and shock resistant design, remote engine cut, ... for handset phone / MDT mobile displayPower port+ 5V/DC, 500mA (max) power supplyBuilt-in memory for 10,000 points data loggingAntennaGPS ... temperature -25 to + 85Backup batteryNickel- hydrogen battery 4.8V/DC 800 MAHGPS dynamic Conditions:Altitude 18,000 meters (60,000 ...