Level 3 Service Manual
GALAXY ASTRAL GEO GEO WAP
Mitsubishi Electric Telecom Europe SA
Version E
ZA le Piquet, 35370 Etrelles
Date: 04/00
Phone: +33 2 99 75 71 00
Fax: + 33 2 99 75 71 47
7/29
2.3 Charging process.
Charging process follows these successive phases :
Pre charge
:This phase is mandatory before the rapid charge to verify that battery operation is
normal (normal battery voltage and temperature). Charge current during this phase is 52 mA. If the
battery voltage is higher than 3.3 Volts, the S/W launch IPD charger in rapid charge except if the
temperature is not between 0°C and 55°C.
2)
Rapid charge
: Charge current during this phase is 420mA. If battery temperature becomes
abnormal IPD charger start at low current charge (21 mA), while temperature comes back normal
(between 0°C and +55°C) during 15 mn. Full charge detection ends Rapid charge. Full charge is
detected by S/W when charge current decreases under 50 mA (full charge convergence current).
3)
Trickle mode
:This phase is necessary to complete the charge and to avoid battery auto
discharge. Charge current during this phase is 21 mA. Trickle charge is automatically stopped after 24
hours duration.