Why use a solar charge controller Solar charge controllers are included in most PV systems to protect the batteries from overcharge and excessive discharge (at night). The minimum function of the controller is to automatically assure the battery is fully charged and keep the battery fully charged without damage to the battery.

MPPT Controllers

Maximum Power Point Tracking controllers maximize the energy from the solar panels by optimally loading the solar panel based on the available sunlight.  This usually results in more current produced on the output side of the controller to the battery.


Controller Selection

The basic criteria for selecting a solar charge controller includes operating voltage (12/24/48 VDC) and the solar panels rated current (Amps). A solar charge controller should be able to handle the rated current of all the panels connected to it. Examples: A typical  135W solar panel (12V system) is rated at 7.4A. The MPPT controller will typically increase the current by 25%, therefore the MPPT controller selected should handle 9.25A ( 7.4 * 1.25 = 9.25A). Two 135W panels in parallel is 7.4A + 7.4A = 14.8A. For use with a MPPT increase this by 25%, or 14.8A * 1.25 = 18.5A. The MPPT controller must have a current rating equal to or greater than this value.

Desired Features. You may want to consider the following: Is an indicator required to indicate the solar panel and charge controller is working? Is an LED charging indicator sufficient or would you rather have a meter that displays battery voltage and charging current? Is conformal coating an important feature? Is Gel, AGM, or lead-acid battery selection important?

Below is a variety of available MPPT controller's.  Please select according to your needs and should you have any questions feel free to give us a call.

Products 1-3 of 3
Schneider MPPT 60 150
Price: $683.00
Availability: In Stock
Schneider Item #: CCS80060 -

Schneider MPPT 60 150 Solar Charge Controller The MPPT 60 150 is a photovoltaic (PV) charge controller that tracks the maximum power point of a PV array to deliver the maximum available current for charging batteries. When charging, the MPPT 60 150 regulates battery voltage and output current based on the amount of energy available from the PV array and state-of-charge of the battery. Benefits Easy to install: Configurable auxiliary output LCD screen with face plate buttons for configuration...

500A / 50mV Shunt shunt, 500A / 50mV Shunt
Price: $29.00
Availability: In Stock
BocaTech Item #: MTS30500 -

Heavy duty, compact, 500A/50mV Shunt. Can be used in conjunction with various ammeters, power energy meters, and battery monitoring systems.

MNWBJR Whiz Bang Jr
Price: $58.00
Availability: In Stock
MidNite Solar Item #: MTS30505 -

The Whiz Bang Jr is a current sense module that attaches to the standard 500mv / 500A Shunt. It wires into the MidNite Solar Classic and KID Charge Controllers to give Amperage readings from the shunt. This allows for EndAmps to function based on System amps or Classic amps. To use the Whizbang jr with any of the Classic Lites, you will either need the local app or an MNGP. This product is made in the USA and carries a 5-years warranty. More detailed information: Manual - MidNite Solar Whiz...