MPPT solar controller EPever 100VDC/ 20A DuoRacer - 12/24V

The DuoRacer DR2210N-DDS MPPT charge controller is designed to charge two batteries - on-board and starter (shown below as BATT1 and BATT2) in a solar system.

This controller supports several types of main batteries (BATT1), including sealed, gel, flooded, LiFePO4 and Li-NiCoMn batteries, which are suitable for RVs, motorhomes, boats, etc.

The device automatically detects the starter battery system voltage (BATT2) and recharges the battery when conditions are met.

The controller works as an inverter, that is, it can process higher input voltage and lower current to lower voltage/increase current with high efficiency.

So we can use virtually any solar panel.

The DuoRacer solar controller is equipped with the latest MPPT (Maximum Power Point Tracking) technology - maximum power point tracking with a sophisticated tracking algorithm where the solar module operates at the ideal voltage that the solar module can produce at the highest available power. When compared to a conventional PWM controller, MPPT technology increases charging efficiency by about 30%.

The maximum charging power to the battery of this model is 20A which corresponds to a panel power of 260 Wp if you have a 12V battery, or 520 Wp if you have a 24V battery. In case the panel will give higher power, then the controller will only limit it to its nominal max power.

The power of PV panels must not be higher than 1.5 times the nominal power of the controller - so 390Wp or 780Wp!

You can connect solar panels in series, but their output voltage at empty, referred to as Voc , must never exceed the value of the empty voltage Voc 100V - exceeding this value will permanently damage the controller (here it must be taken into account that the solar panel voltage increases with decreasing ambient temperature and the value of Voc indicated in the solar panel parameters is at 25C).

Therefore, we do not recommend that the value of the stated Voc exceeds 90V)

Main Function:

Maximum power point tracking technology with extremely fast tracking speed and tracking efficiency of more than 99.5%

Advanced MPPT control algorithm to minimize speed loss and MPP time loss

Wider MPP operating voltage range to improve PV module utilization

Automatic charge control and charge current limiting function (BATT1)

High quality and low failure rate ST, TI and Infineon components to ensure product lifetime

Digital circuit control of the adaptive three-stage charging mode to increase the lifetime of BATT1.

BATT1 type can be set by LED/LCD.

If there is no charging for a long period of time and the PV array has low voltage (PV<5V), the controller will go into low power mode.

100% charging and discharging within the operating temperature range.

AES control signal for car refrigerator

Standard Modbus protocol and RS485 communication port (5V/200mA).

Built-in display function:

Display loop:

PV Voltage → PV Current → PV Energy → Generated Energy → Voltage BATT1 → Proud BATT1 → Max. voltage BATT1 → Min. voltage BATT1 → Temperature BATT1 → Battery type BATT1 → Voltage BATT2 → Current BATT2 → Max. voltage BATT2 → Min. voltage BATT2 → PV voltage

The remote display MT11 ( optional accessory, not included) of the van can display various operating data and system fault information. The information can be displayed on the backlit LCD screen, the buttons are easy to operate and the numeric display is easy to read.

Detailed information about DuoRacer can be found in the attached manual.