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Phocos CXNup20-2B Solar Charge Controller, Negative Grounding, Two Battery Loader (12/24V)

Phocos CXNup20-2B Dual Battery Solar Charge Controller with LCD
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Net Price: 113,50 €
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Phocos CXNup20-2B


Phocos CXNup20-2B  
Solar Charge Controller, 12/24V, 20A, negative grounding, two battery loader

Dual Battery Solar Charge Controller with LCD

The dual battery charger CXNup 2B offers outstanding features in its class. In addition to sophisticated PWM charge regulation with integrated temperature compensation, the CXNup 2B controller provides a user friendly LCD indication, programmable parameters, and various safety functions.

Furthermore, battery state of charge (SOC), energy flow to the batteries can be clearly visualized. When built in a caravan the CXNup 2B keeps the starter battery full and provides a flexible priority setting for the batteries. An acoustic alarm is also built-in.


  • Charge two individual batteries

  • User friendly LCD shows extensive system information

  • Four-stage PWM charging algorithm with integrated temperature compensation

  • Full electronic protection

  • Data logger information that can also be exported via MXI interface

  • Touch keys ensure long lasting operation

  • Data logger (2 years)

Example of standard PV diagram with

Phocos CXN Series (or other PWM charge controller) optionally with

Phocos 110/230V off-grid pure sine wave solar inverter

Standard PV solar diagram PV solar diagram with an Pure Sine Wave Inverter (230V/50Hz or 110V/60Hz)
Example: standard PV solar diagram with Phocos PWM charge controller Example: standard PV solar diagram with Phocos PWM charge controller and an 230V-AV pure sine wave solar inverter

Main Components

Main Components


 Phocos CXNup20-2B - Datasheet
Phocos CXNup20-2B - User Manual
Phocos CXNup20-2B - CE Certificate

CXCOM software

CXCOM configuration software for CX-controllers, quick and easy configuration of individual load-time and system components.

 CXCOM ver_V5.0_2011-09-02_0 software:
download (4.7MB)
 CXCOM manual PDF download (1.2MB)
 CXCOM installations guide VISTA PDF download (0.5MB)
 CXCOM installations guide WIN98/2000/XP PDF download (0.5MB)


Technical Data

Product Phocos CXNup20-2B
Type Dual Battery Solar Charge Controller with LCD
System Photovoltaic Systems
Function Charge two individual batteries
Batteries Lead acid (GEL, AGM, flooded), LiFePO4
Charge voltage for LiFePO4 battery 14.0/28.0V (temperature limit: -20 to +60°C)
Main / auxiliary battery charging Adjustable
Charging Mode PWM
Nominal Voltage 12/24V automatic detection
Max. charge current 20A
Float charge 13,7V
Main charge 14.4/28.8V (25°C) 30min (daily)
Boost charge 14.4/28.8V (25°C) 2h activation: battery voltage <12.3/24.6V
Equalization 14.8/29.6V (25°C), 2h activation: battery voltage < 12.1/24.2V (at least every 30 days)
Max. panel voltage 30/50V (Voc) for 12/24V Systems
Temperature compensation -25 mV/K at 12V | -50 mV/K at 24V
Self consumption < 4mA
Grounding negative pole grounded
Ambient temperature −30 to +50°C
Max. height 4.000m above sea level
Wire cross section Up to 16 mm2
Weight 168 g
Dimensions (WxHxD) 101x103x32mm
Protection class IP22
Datalogger 2 years
Warranty 2 years

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