Specifications

7. JAVA BOX GPS Options
This chapter provides options that can be use on the JAVA BOX GPS.
7.1 Battery Source Power
7.1.1 Battery Power
Single 3.7V LIPO cell battery type is use for supplying the power to the JAVA BOX The battery capacity
900mAh.
7.1.2 Battery Charge control Circuitry
The charging process for LIPO Battery divided into 4 phases:
• Qualification and trickle charging
• Fast charge 1 - constant current
• Final charge - constant voltage or pulsed charging
• Maintenance charge
The qualification process down by special internal chip, this chip is battery charger voltage regulator.
moreover all these operations should start only if battery temperature is inside a charging range,
usually 5°C - 45°C. The JAVA BOX measures the temperature of its internal component, in order to
satisfy this last requirement, it's not exactly the same as the battery temperature but in common
application the two temperature should not differ too much and the charging temperature range should
be guaranteed.
Figure 20: JAVA BOX Terminal bottom view LIPO Battery location
Java Box Terminal Hardware Interface Description
Released
Battery and
SIM drawer
Battery
900ma/H
Battery
connector