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Do not leave any M/A-COM rechargeable batteries in a charger for more than a few days.  
4.4  CHANGING THE BATTERY PACK 
4.4.1  Removing the Battery Pack 
Make sure the power to the radio is turned OFF. 
CAUTION
 
Although the P5400 has been designed to tolerate changing the battery pack without 
turning power off, M/A-COM, Inc. recommends turning the radio off before changing 
battery packs to ensure safety and best operation. 
1.  Press or pull both latches on either side of the battery pack  toward the bottom of the radio 
simultaneously.  
2.  Pull the battery  away from the radio. 
3.  Remove the battery pack from the radio. 
 
 
Figure 4-1: Removing the Battery Pack