7
Protection Spec.
DLP-GC2-12V
DLP-GC2-24V
DLP-GC2-36V
DLP-GC2-48V
Over-discharge Current
Protection
c
3-second rating
350 A
3-second rating
219 A
3-second rating
105 A
Recovery
c
Recover after 120 seconds
Over-temperature in Discharge
Protection
d
Cell temperature above 60°C (140°F) for 3 seconds
Recovery
d
Cell temperature below 50°C (122°F)
Under-temperature Discharge
Protection
d
Cell temperature below -20°C (-4°F) for 5 seconds
Recovery
d
Cell temperature above -18°C (0°F)
Over-temperature in Charge
Protection
d
Cell temperature above 60°C (140°F) for 3 seconds
Recovery
d
Cell temperature below 50°C (122°F)
Under-temperature in Charge
Protection
d
Cell temperature below 0°C (32°F) for 5 seconds and charge current detected
Recovery
d
Charge recovery temperature > 2°C (36°F). Please note that discharge will
continue to be available to -20°C (-4°F)
Load Qualification Protection
Protection
Mixed System Voltage, Short Circuit, Reverse Polarity, Input Capacitance
Overload
Recovery
Re-Qualify after 120s. After 10 failed attempts to qualify, the battery will
switch OFF
a
Overvoltage protection monitors individual cell voltages. Protection will trigger when any cell is over 3.65 VPC and
recover when all cells are below 3.45 VPC for 120 seconds. Voltages are provided for guidance only.
b
Undervoltage protection monitors individual cell voltages. Protection will trigger with any cell under 2.5 VPC and
switch the battery OFF. Manually switch the battery to ON to recover. Voltages are provided for guidance only.
c
See Figure 1 Over-Discharge Protection Time Current Curve for time vs current interrupt detail.
d
This is the specified temperature of the cells and not ambient. Ambient temperature and cell temperature may not
be the same.
0.001
100 200 300
0.001
0.01
1
10
100
1000
10000
100000
Current (A)
Interrupt Time ()s)
400 500 600 700 800 900 1,000 1,100 1,200
Figure 1. Over-Discharge Protection Time Current Curve.
