Renogy 100W - Charge Controller Threshold Voltage Parameters

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Low Voltage Reconnect—this parameter allows loads connected to the system will be able to
operate (not fully) again.
Under-voltage Recover—deals with the loads connected to the system. When batteries are
determined to be low due to them approaching low voltage disconnect, then the loads will be
shut off to give the batteries time to recover. This parameter sets the controller to shut off the
loads until it can reach the low voltage reconnect stage.
Under-voltage Warning—this parameter deals with the batteries themselves approaching the
under-voltage recovery state. The user should minimize loads before the charge controller
approaches a level where it will do this automatically to protect the battery from discharging
Low-voltage disconnect—prevents over-discharge of the batteries by automatically
disconnecting any loads. This extends battery life and is the precedent to being in an under
voltage state, recovering from the under voltage state, and finally reconnecting to normal
operational state.
Discharging limit Voltage—the user can set the “discharge” limit of a battery if they choose to
better protect the battery and expand its life. The following chart serves as an example of
voltages and their state of charges. Note that the higher the charging limit and lower the
discharge limit correlates with overall low battery life.
State of Charge
12 V Battery
Volts per Cell
100%
12.7
2.12
90%
12.5
2.08
80%
12.42
2.07
70%
12.32
2.05
60%
12.20
2.03
50%
12.06
2.01
40%
11.9
1.98
30%
11.75
1.96
20%
11.58
1.93
10%
11.31
1.89
0
10.5
1.75
Charge Controller Threshold Voltage Parameters
The following chart demonstrates the parameters when using the Timer under load settings.
Description
Parameter
Day Time Threshold Voltage (DTTV)
Default
5V; x2/24V
Max
10V; x2/24V
Min
1V; x2/24V
Night Time Threshold Voltage (NTTV)
Default
6V; x2/24V
Max
10V; x2/24V
Min
1V; x2/24V