100w White Flexible Solar Panel Charging Kit with MPPT Charger Controller, MT50 Screen and cables

• Advanced Maximum Power point tracking (MPPT) technology, with efficiency no less than 99.5%
• High-quality components with a maximum conversion efficiency of 98%
• Ultra fast-tracking speed and guaranteed tracking efficiency
• Reliable automatic limit function of maximum PV input power, ensuring no overload risk.
• Wide maximum PowerPoint operating voltage range
• 12/24V DC automatic battery detection
• LCD panel display providing operating data and working conditions
• supports 3 pre-programmed charging options, sealed, gel and flooded batteries
• battery temperature compensation function
• Includes RS-485 communication bus interface and mod bus communication protocol
• RS-485 plug socket port can be used for PC monitoring via USB connection, this socket can also be used for connecting the MT50 external display unit to show real-time data and parameter settings.
• Remote temperature sensor connection port, to remotely detect battery temperature allowing and MPPT technology to adjust parameters.
• The controller has a three-stage battery charging algorithm (bulk charging, constant charging and flow charging) for rapid, efficient and safe battery charging.

Technical – Tracer AN Series 1206AN

• Nominal System Voltage 12/24V Auto
• Battery Input Voltage Range 8V ~ 32V
• Max Charge/ Discharge Current 10A
• Max. PV Open Circuit Voltage 60V (At minimum operating environment temperature)
• Max. PV Open Circuit Voltage 46V (At 25 DegC  operating environment temperature)
• MPPT Voltage Range +2V ~ 36V
• Max Rated Charging Power (10A), 130W (12V), 260W (24V)
• Max. PV Array Input Power 390W (12V), 780W (24V)
• Wiring Connections, Solar +/-, Battery +/-, Power Output +/-, Temp Sensor, COM RJ45
• Working Environment Temperature Range – 25  to +45 DegC
• Humidity Range <95%
• Enclosure IP30
• Dimensions 172mm x 139mm x 44mm
• Power Terminals 12AWH (4mm sq)
• Weight 0.6Kg

Maximum PV Array input power

When the PV array is connected to the charge controller with correct polarity, the Max. PV Array Power must not exceed three times the Rate Charge Power.

These MPPT controllers have a limiting function on charging current to protect the components and circuits.  They will charge the battery(s) within the rated charging power even if PV input power exceeds this range, for example

1, If the PV array output power is less than or equal to the rated charge power above, the controller will charge the battery(s) at the actual maximum power point;

2, If the PV array output power is greater than the rated charge power above, the controller will charge the battery(s) at the maximum rated power.

This should be taken into account when designing the PV array power output which may peak during summer months causing some surplus generation in off-grid systems.  For larger PV arrays, this solar charge controller may only form part of the overall system where some of the power generation is channelled into battery storage and the remainder of power generation may have real time usage/ consumption.