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

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Limitations: max 3 units per order
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Price: € 102.00 102.00
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Producer: Phocos
Product code: Phocos CXNup20-2B


Phocos CXNup20-2B

PV solar charge controller - two battery loader


The CXNup series is a highly intelligent charge controller family for a wide range of applications. It features an intuitive user interface and stores up to two (2) years of valuable system performance data, which is accessible via the LCD and PhocosLink software. Real-time battery voltage, battery state-of-charge (SOC) in percent, charge and load current, and system status are clearly displayed on the large, backlit LCD. Optional acoustic battery alarms and a programmable street light settings are also standard. The CXNup2B offers the possibility to charge two independent batteries with up to 20 A. All other variants offer a USB port to charge mobile phones, tablets and other USB devices.


  • USB charging port 
  • Data logger information can be exported 
  • Load status indication 
  • Touch keys ensure long lasting operation and eliminates mechanical button failures 
  • Prepared for 12 or 24 V battery charging 
  • Suitable for charging systems up to 1.4 kW 
  • 2 year datalogging 
  • User friendly LCD shows extensive system information 
  • Four-stage PWM charging algorithm with integrated temperature compensation 
  • Full electronic protection 
  • Programmable load function suitable for street lights 
  • Corrosion-resistant screw terminals 
  • Programmable battery type 
  • Compatible with LiFePO4 batteries (no communication to battery)

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
Max. load current 20A
Float charge 13.8/27.6V (25°C)
Main charge 14.4/28.8V (25°C), 0.5 h 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
Deep discharge protection 11.5-12.0/23.0-24.0V (by SOC) 11.0-11.5/22.0-23.0V (by voltage)
Overvoltage protection 15.5/31.0V
Undervoltage protection 10.5/21.0V
Temperature compensation -25 mV/K at 12V | -50 mV/K at 24V
Self consumption < 4mA
Grounding common negative
Ambient temperature −40 to +60°C
Max. height 4.000m above sea level
USB Charging Port 5.0V, 1.5A
Wire cross section Max. 16 mm2 (AWG 6)
Weight 179 g
Dimensions (WxHxD) 101x103x32mm
Protection class IP22
Datalogger 2 years
Warranty 5 years

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