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INSTALLATION OVERVIEW
1.7 SPECIFICATIONS
DESCRIPTION
Nominal System Voltage
Charging Output Voltage Range Battery 1
Charging Output Voltage Range Battery 2
Maximum Charge Current Battery 1
Maximum Charge Current Battery 2
Maximum Solar DC Input Voltage
Maximum Series Fuse or Circuit Breaker Solar/Battery
Range of DC Input Voltage
Maximum DC Input Operating Current
Maximum DC Short Circuit Current
Max. Series Fuse or Circuit Breaker
Solar/Battery 1/Battery 2
Operating Consumption (Display backlight on)
Operating Consumption (Display backlight off)
Battery Types Supported
Bulk/Absorption Voltage
(Sealed/Gel, AGM/LFP , Flooded)
Absorption Voltage (LiFePO4)
Float Voltage (Sealed/Gel, AGM, Flooded)
Equalization Voltage
(Sealed only)
Temperature Compensation (Sealed/Gel, AGM, Flooded)
USB charger
Low Voltage Disconnect (USB)
Operating Temperature
Display Operating Temperature
Charge Current De-Rating
(Based on internal temperature of the controller)
VALUE
12 VDC
9 – 14.9 VDC
9 – 14.9 VDC
37.5 A
37.5 A
35 VDC
15 A
9.0 – 35.0 VDC
37.5 A
37.5 A
50 A
15mA
6 mA
Vented and Sealed (GEL, AGM etc.)
Lead Acid
Lithium Iron Phosphate (LFP or LiFePO4)
14.1/14.4/14.4VDC
(25°C / 77°F), 30min / Day or
2hr if battery voltage < 12.3 VDC
14.4V - 30min / Day
13.7V (25°C / 77°F), 14.0V(Lithium)
14.9V (25°C / 77°F),
2h / 28 Day or
if battery voltage < 12.1 VDC
- 24mV/ºC / -13V/ºF
5V, 1500mA
11.0 VDC
Reconnects once battery reaches:
12.8V for Sealed/Gel, AGM, Flooded
12.2V for LiFePO4
- 40 to 85°C / - 40 to 185°F
- 10 to 55°C / 14 to 131°F
Internal Temp.
Max Charge Output Current
<80°C/176°F
37.5A
80°C/176°F
22.5A
81°C/177.8°F
15A
82°C/179.6°F
7.5A
>82°C/179.6°F
0A
Dimensions (H x W x D):
108 x 190 x 35 mm
4.25 x 7.48 x 1.38 in
Weight: 300g / 10.6 oz
Maximum Wire Gauge:
#4 AWG
Warranty: 5 years
• PWM Charging
• 3 Battery Charging profiles
• 4 Stage Charging
• Monthly Equalize option
• Displays Charging Current,
Battery Voltage and Battery
State of Charge
• Reverse Polarity protected
• Temperature Compensated
• RoHS Compliant, environ-
mentally safe
• Accepts up to 600 watts of
solar at 12 volts
• Maximum Power Boost Tech-
nology
gpelectric.com | [page 5]
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