SC-2030 Solar Charger — 30 Amps Max- 12 or 24V PWM type

SC-2030 Solar Charger — 30 Amps Max- 12 or 24V PWM type

The SC-2030 Solar Charger (used in tandem with the TM-2030 battery monitor) has unusual benefits that can extend the life of your battery system.  If you’re interested in purchasing the TM-2030 or the SC-2030 directly from us please contact us. 

Important: The SC-2030 charge controller is designed to connect to and is controlled by the TriMetric TM-2030. The TriMetric will not communicate with or control any other charge controllers; it will monitor their charging activity by way of the electrical shunt that connects to the battery.  Do not attempt to connect any other charge controller to the TM-2030. Doing so will void its warranty and will damage the TriMetric.

SC-2030 Charge Controller

● High efficiency charging at lower cost than MPPT chargers.  For best efficiency must be used only with “12V” or “24V” (about 17 or 35 volt Vpp-max power point) solar panels for high efficiency. These are usually described as “12 volt” or “24 volt” panels. Other type panels require a more expensive MPPT type charger for high efficiency.

● Compatible with all battery chemistries including lead acid, AGM, Gel, Nickel Iron, Lithium, etc.  Note for Lithium batteries:  When using the SC-2030, program the TM-2030 (P8-P21) to adhere to strict charging guidelines.  Contact us for more information.


● For 12 or 24 V battery systems.

● Up to 30 amps maximum solar current. Charger will safely reduce output if panel current exceeds 31 amps.  Note: Open Circuit Voltage limit from panels must not exceed 55 Volts.

● Optional Temperature compensation if temperature sensor is used.

● Small size: 3 x 5 1/4 x 2 3/4 inches; 7.6 X 13.3 X 7 cm.

● Easy programming for charging your batteries:  The TriMetric  has 8 adjustable charging parameters to match any battery type.  Enter your charging data using the TM-2030 based on battery manufacturer recommendations.  Get your charging data here.

● If TM-2030 disconnected: charger still functions–but in standalone mode at the level of simpler charge controllers.

● When designing the SC-2030 we checked many battery company websites, and spoke with experts in their companies to find out what they recommend for charging before we designed it. Many solar charge controllers have very limited ability to adjust–a few even charge with voltage that is lower than what any battery company recommends.

As a result of this research we’ve added two unusual features to ensure that batteries are not damaged by over or under charging:

1. Amp hour counting: During a discharge period it measures precisely the amount of previous discharge, and then when recharging adds back the same amount plus an additional measured percentage of charge: for liquid electrolyte lead acid batteries about 110-120%–or for AGM types about 104-109%.

2. Also unusual in chargers, but frequently now recommended to maintain battery capacity is an extra higher voltage “mini equalization” finishing stage.  During the last part of the charge it can increase charging voltage (at a regulated low current value) to avoid undercharge during a limited solar day. (This is sometimes called “IUI” charging.)


● All of this is controlled by the TM-2030 Battery Monitor located in your living area–connected with a common crossover phone cable to the SC-2030 usually located near the batteries.  In addition to high quality charging, you also get all of the benefits of the TM-2030 monitoring system: volts, battery amps, solar amps, replaced percent of charge compared to previous discharge, extra unused solar power, battery temperature and more.

● The SC-2030 uses “PWM” (“pulse width modulation”) technology, which requires that it be used with what are often described as “12 Volt” (or “24 volt”) solar panels for good efficiency. Some have asked why we used this instead of newer “MPPT” technology for this charger. We explain this in a “Frequently Answered Question” on this web site. If you’re curious, go to the top of this page to “Support,” then “Frequently Answered Questions,” question C.1.

For a wiring diagram, technical details on charging, and to see what’s involved to install it, visit our support page.







Please visit our support page for more information.



Made in the U.S.A.