Sorry I was a bit late, been really busy with the Corona, family and buying a new Tesla. It was in the manual so I thought you could find it with a quick search.
There are 2 options to conserve battery:
18.2 Standby With Shock Sensor
In standby with shock sensor mode, 104-PRO will enter sleep mode if it has been stationary (no vibration) for 5 minutes. GPS module and LED lights will shut off, GSM module will still stay ON. As the GSM module will be ON, you will still be able to communicate with the unit directly. Vibration, movement, sending SMS commands or Calling the 104-PRO will wake it back up. To activate send SMS command: "sleep+password+space+shock".
Example: sleep123456 shock
Response: sleep shock ok!
18.4 Schedule Work Standby Mode
In scheduled work standby mode, 104-PRO is able to switch itself OFF and only wake up at pre-set intervals. When it wakes up it will work for 5 minutes, report its location (SMS or Internet) and switch OFF. If you are using your 104- PRO in live, internet tracking mode and would like to use schedule work mode, you will also have to activate less GPRS mode. If GPRS economy mode is not active the auto interval update will override the schedule standby and keep your tracker awake.
To activate schedule work standby mode send schedule work sms command and GRPS economy mode command; "schedule+password+space+time interval" and "less+space+gprs+password+space+on"
Time interval settings are ; m= minutes , h=hours, d= days. Maximum schedule setting is 30 days.
Example: schedule123456 30m
Example: schedule123456 5h
Example: less gprs123456 on
Response: sleep shock ok!
Schedule work standby mode will provide the longest standby duration as power usage will always stay at minimum possible levels. GPS, GSM modules and the shock sensor will switch off and only the timer will be consuming power. Please see approximate battery standby durations below;
2 updates per day = 8 months 4 updates per day = 4 months 8 updates per day = 8 weeks 24 updates per day = 4 weeks
To cancel schedule work standby mode send SMS command: "noschedule+password"
Example: noschedule123456
Response: noschedule ok!
All 18. Standby Modes - in the manual help manage battery life and you can simply set an alert for movement from the "Alerts" menu to receive notifications. If you want, I can explain it as well.