Rev. A-021210
Page 2
P/N VDC E12248-S2-MNL
BatteryMINDer
®
E12248-AA-S2
The chart below shows the need to regulate the output voltage
of the charger to ensure against over or under charging your
battery over a wide range of temperatures. Using your At-the-
Battery Sensor will accomplish this better than any other known
method.
**
Values shown in
RED
are based on information supplied by Concorde Bat-
tery Co., effective 12-27-06. Values for sealed AGM types manufactured by
other aviation battery companies are believed to be comparable. We
strongly
recommend checking with the appropriate dealer or battery manufacturer to be
certain.
AGM Charge and Float Voltages at Various Temperature Ranges**
Temp °F
Optimum
Charge
Optimum
Float
Temp °C
≥
120
1.40
12.45
≥
4
110 – 120
1.60
12.55
43 – 49
100 -110
1.70
12.65
38 – 43
90 – 100
1.80
12.75
32 – 38
80 – 90
1.0
12.85
27 – 32
70 – 80
14.10**
13.05**
21 – 27
60 – 70
14.25
1.0
16 - 21
50 – 60
14.40
1.50
10 - 16
40 – 50
14.60
1.70
4 - 10
≤
40
14.0
1.0
≤
4
Note: This chart shows the Charge and Float voltage ranges v. temperature
for sealed 12-Volt AGM Aviation type batteries. Values will differ for sealed Gel
or Flooded (filler cap) or maintenance-free types.
