Primary System Information
The Trimetric is compatible with all battery chemistries including lead acid, AGM, Gel, Nickel Iron, Lithium, etc.
Note for Lithium batteries: When used with the SC-2030, P8-P21 must be programmed to adhere to strict charging guidelines.
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IMPORTANT! After installation, P1 and P3 must be correctly programmed and full charge criteria (determined by P1 and P2)
must be met in order for % Full to display an accurate value.
To Program the TriMetric:
Press and hold Select until P1 appears, then press Select to toggle through the different programmable data (P1-P22). To change the data, briefly press
Select and Reset at the same time and let go. The green lights will flash to indicate that you are in Change Mode. Press the Reset button to change the
value, then press Select to exit change mode.
Basic Programmable Parameters required to properly use the TriMetric
The values described below are default values. Please contact your battery manufacturer for recommended charging information.
P1: Charged voltage set point: The battery is signaled as “charged” when volts exceeds the P1 value, and charging current is less than as de-
scribed in P2 (below). P1 is also the “absorb voltage” set point for the SC-2030 charger when used. The default value for a 12 volt system is
“14.3”
P2: Charged current set point (expressed by the TriMetric as Amps): The charged current set point is a percentage of the value set for
P3. If P2 is set to 2.0, and P3 is 220, then the set-point current value = 4.4A. It also signals the SC-2030 to go into “finish charge” mode. The
default and recommended value is “2.0”%
P3: Battery system capacity (20 Hr. rate) in Amp-Hours (10 to 9990 A-hr). Default “220”. Above 1000 amp hours will display with a deci-
mal value Example 1.2 = 1200 Note: Review shunt type information (P11).
Volts: The voltage of your main battery (if the B1 LED is on) or the voltage of the secondary battery (if the B2 LED is on). Use volts to
determine a low state of charge. This would be (for 12V system) when volts are somewhat less than 12.0 volts. Between 12.0 and 14.0
volts the display is a poor indicator of state of charge in a working system. Use % full instead.
Amps (or Watts): Positive when the battery is being charged or negative when the battery is being discharged. This display mode can be
changed to show watts (using program P4) instead of current (in Amps).
Percent Full: This display shows the state of charge (how much energy is left) based on voltage and current. Use this display to minimize
generator run time when charging batteries by running it when “% FULL” is low and thus charging current is higher. When % FULL
is high, finish charging with solar at lower current and longer charge times.
