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Getting Started
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Charging the Battery
 
Charging the Main Battery and Memory Backup Battery
Before using the mobile computer for the first time, charge the main battery until the amber charge indicator light 
remains lit (see 
 for charge status indications). The main battery fully charges in less than 
four hours. The mobile computer can be charged using a cradle, the CAM, or the MSR with the appropriate power 
supply.
The mobile computer is also equipped with a memory backup battery which automatically charges from the main 
battery whether or not the mobile computer is operating or is in suspend mode. The memory backup battery retains 
data in memory for at least 30 minutes when the mobile computer's main battery is removed or fully discharged. 
When the mobile computer is used for the first time or after the memory backup battery has fully discharged, the 
memory backup battery requires approximately 15 hours to fully charge. Do not remove the main battery from the 
mobile computer for 15 hours to ensure that the memory backup battery fully charges. If the main battery is 
removed from the mobile computer or the main battery is fully discharged, the memory backup battery completely 
discharges in several hours.
When the main battery reaches a very low battery state, the combination of main battery and backup battery 
retains data in memory for at least 72 hours.
Use the following to charge batteries:
Cradles: The mobile computer slips into the cradles for charging the battery in the mobile computer (and 
spare batteries, where applicable). For detailed cradle setup and charging procedures refer to the MC909X 
Integrator Guide
.
Single Slot Serial/USB Cradle.
Four Slot Ethernet Cradle
Four Slot Charge Only Cradle.
Accessories: The mobile computer snap-on accessories provide charging capability, when used with one of 
the accessory charging cables. For detailed snap-on setup and charging procedures refer to the MC909X 
Integrator Guide
.
CAM
MSR.
Chargers: The mobile computer spare battery charging accessories are used to charge batteries that are 
removed from the mobile computer. For detailed spare battery charging accessories setup and charging 
procedures refer to the MC909X Integrator Guide.
Single Slot Serial/USB Cradle
Four Slot Spare Battery Charger
Universal Battery Charger (UBC) Adapter.
CAUTION
Ensure that you follow the guidelines for battery safety described in Battery Safety Guidelines on page 7-1.
NOTE
Do not remove the main battery within the first 15 hours of use. If the main battery is removed before the 
backup battery is fully charged, data may be lost.
NOTE
To achieve the best battery life in mobile computers with multiple radios, turn off the radios that are not being 
used. SeTurning Off the Radios on page 1-18 for more information.