Installing the at10.1 – Exide Technologies Section 94.20 User Manual
Page 26

INSTALLING THE AT10.1
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7. Check your work. Be sure that:
• All connections are secure. 
• The shield is connected to ground at the charger end only (on the main 
circuit board).
• The cable is connected to TB8 on the circuit board. Other terminal
blocks may look similar.
8. Restart the AT10.1 using the startup procedure in Section 2.1. During
startup, the AT10.1 displays
LEAD
on the front panel, indicating that the
temperature compensation is set up for lead-acid batteries. While this is 
being displayed, you can press any front panel key to change the display to 
read 
NICD
, to change the temperature compensation setup for nickel
cadmium batteries. The choice you make is saved internally, and will be 
used again by the AT10.1 the next time it starts. 
9. Adjust the output float and equalize voltages to the battery manufacturer's
recommended values, using the AT10.1 front panel meter, as described in 
Section 2.3.2. 
NOTE: If the temperature compensation probe, or the wiring 
from the probe to the AT10.1, is damaged and becomes an 
open circuit, the AT10.1 detects the damage and displays 
E 08
on the display. The charger then reverts to normal non-
temperature-compensated operation until the probe or wiring 
is repaired. Once the probe is repaired, you must restart the 
AT10.1 to activate the probe, as described in Section 2.1. 
Using temperature compensation
When an electric storage battery is being charged, the terminal voltage of 
the battery changes a small amount whenever the battery temperature 
changes. As the battery temperature increases, its terminal voltage 
decreases. When a battery is charged by a float type charger with a 
constant output voltage, float current increases when the temperature 
increases. This results in overcharging the battery, which can result in 
damage to the materials, or at least the need for more frequent 
maintenance. 
When the AT10.1 is equipped with a temperature compensation probe, it 
is able to adjust the output voltage applied to the battery to keep the float 
current constant, thereby avoiding overcharging. The probe senses the 
ambient temperature at the battery, and adjusts the output float/equalize 
voltages to compensate for variations in temperature. If the ambient 
temperature increases, the AT10.1 output voltage decreases. 
If you are experiencing any inconsistencies in the AT10.1 when the 
temperature compensation probe is utilized, temporarily disconnect the 
probe, and refer to the Application Note (
