Manual

Rev. F-103007 P/N VDC12248AA-S1-MNL
BatteryMINDer
®
Model 12248-AA-S1
Page 23
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 Battery 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. VDC, nor its resellers, will be responsible for any aviation type
battery found to be damaged by any of our Aviation Adjusted (-AA) chargers, as we cannot confirm whether or not the
user correctly selected the required battery type or used and correctly installed the Temperature Sensor type ABS-248.
AGM Charge and Float Voltages at Various Temperature Ranges**
Temp °F
Optimum Charge
Optimum Float
Temp °C
≥120
13.40
12.45
≥49
110 – 120
13.60
12.55
43 – 49
100 -110
13.70
12.65
38 – 43
90 – 100
13.80
12.75
32 – 38
80 – 90
13.90
12.85
27 – 32
70 – 80
14.10**
13.05**
21 – 27
60 – 70
14.25
13.30
16 - 21
50 – 60
14.40
13.50
10 - 16
40 – 50
14.60
13.70
4 - 10
≤40
14.90
13.90
≤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 (ller cap) or maintenance-free types.