9
English
IMPRES Battery Initialization
For full IMPRES functionality, a new IMPRES battery or 
IMPRES 2 battery must be initialized by the charger. The charger 
automatically detects the new IMPRES or IMPRES 2 battery, and 
automatically starts Initialization. Initialization is the first IMPRES 
battery Calibration / Reconditioning. This is a two-phase process. The 
first phase is Battery Discharge, indicated by the Status LED in Steady 
Amber. The second phase is full charge, eventually indicated by 
Steady Green LED. This process may take up to 12 hours or more to 
complete, depending on the state of charge and capacity of the battery. 
Interruption of either phase delays Initialization until the next charging 
opportunity. 
Automatic IMPRES Battery Calibration / Reconditioning
The APX-Series IMPRES 2 charger automatically assesses the 
condition of an IMPRES or IMPRES 2 battery. Based on this condition, 
the charger automatically calibrates / reconditions the battery. 
Interruption of either the discharge phase or the full charge phase 
delays Calibration until the next charging opportunity.
Calibration / Reconditioning may be enabled or disabled using Charger 
Setup Mode. When disabled and the IMPRES battery requires 
Calibration / Reconditioning, the LED will indicate Alternating Amber / 
Green at battery insertion and after the battery is charged. 
Manually Initiating Calibration / Reconditioning 
Though Calibration / Reconditioning is automatic, there may be 
situations in which manual initiation is desired. To manually initiate 
Calibration / Reconditioning, remove IMPRES or IMPRES 2 battery 
from the charger. Then, perform the following steps: 
1. Insert the battery into the charger pocket.
2. Within 2-1/2 minutes, remove the battery from the charger pocket.
3. Within 5 seconds, reinsert the battery into the charger pocket. 
Calibration / Reconditioning starts immediately, typically beginning with 
Battery Discharge (Steady Amber). Calibration / Reconditioning is 
complete only after full charge (Steady Green). 
MN002407A01.book  Page 9  Thursday, February 16, 2017  3:18 PM