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Condition 1: BATT2 stops charging when the PV voltage is no ligher 2V than BATT1
Condition 2: BATT2 stops charging when BATT1 is not in float charging stage and the
total charging current for the battery is less than 2.5A.
Condition 3: BATT2 stops charging when BATT2 reaches the “Full Voltage”.
1. Main battery (BATT1) is the energy storage battery for powering the household loads
in the off-grid system, which supports Sealed, Gel, Flooded, LiFePO4, and Li-NiCoMn
batteries (the controller can NOT recognize the system voltage automatically).
2. Starter battery (BATT2) is the energy storage battery which usually built in the vehicle
for powering the system such as RV and Boat, and only supports lead-acid battery
(the controller will recognize the system voltage automatically).
NOTE: the BATT1 and BATT2 must be at the same voltage level.
Name definition
1. The controller is charging the BATT1 as default (250C) without temperature compen-
sation function when it’s not connected to the remote temperature sensor, or the
temperature sensor is damaged. The temperature compensation is ONLY designed for
the lead-acid battery, for lithium battery, there is no temperature compensation.
2. AES port which output is 12V/200mA and RS485 Port which output is 5V/200mA are
independent of DR1106/2106/3106N models, the AES port output voltage is the
battery voltage. The above two ports of DR1206/2206/3206/2210/3210N models
share the power of 5VDC/Max. 200mA also the AES signal port is designed for AES
supporting car refrigerator, It is required for internal power switching device.
Starter battery BATT2 Instruction
1. Working principle of starter battery
The controller trickle charges the BATT2 at 1A constant current. When the voltage
reaches the “Full voltage” during the BATT2 charging process, the controller will stop
charging and exit from constant voltage charging mode.
2. Voltage contol parameters of starter battery
CAUTION: Please follow the logic of Full Voltage > Return Voltage when
modifying the voltage point.
Condition 1: BATT2 start charging when BATT1 reach the float charging stage and
the BATT2 voltage is lower than the “Charging Return Voltage.
Condition 2: BATT2 start charging when the batteries total charging current is higher
than 3A and the BATT2 voltage is lower than the “Charging Return Voltage.
3. Start Charging Conditions
CAUTION: BATT2 ONLY supports lead-acid battery type, before starting the
BATT2 charging, please connect the BATT1 first.
4. Stop Charging Conditions
CAUTION: After the BATT2 charging is turned off, it will be recharged only
when the start charging conditions are satisfied again.
Item
Default
Modify range
Full voltage
13.8V/12V; 27.6V/24V
9~17V(24V×2)
Charge return voltage
13V/12V; 26V/24V
9~17V(24V×2)
❶
Mounting hole sizeΦ5mm
❷
LCD (Refer to chapter 3)
❸
Grounding Terminal
❹
Remote temperature sensor port
❺
PV terminals
❻
BATT1 terminals
❼
BATT2 terminals
❽
RS485 Communication port
②
❾
AES (signal) output port
②
❿
Terminal protection cover
