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Charge Controllers

Charge Controllers

Charge Controllers

PWM and MPPT charge controllers from Morningstar, Apollo Solar, OutBack Power Systems, Xantrex, and Blue Sky Energy.

PWM and MPPT

A charge controller is an electronic voltage regulator, used in off-grid systems and grid-tie systems with battery backup that controls the flow of power from the charging source to the battery. The charge controller automatically tapers, stops, or diverts the charge when batteries become fully charged. Some charge controllers have metering and data-logging capability to show system operation parameters and battery charge status. Some have low battery load disconnect to prevent over-discharge and some have built-in light controls to turn on lights at night.

Charge controller capacities ranges from 4 amps to 80 amps and multiple charge controllers can be used in parallel for larger systems. The simplest charge controllers turn off the charge when the battery reaches a voltage near full charge, and turn it on when the voltage drops about one volt. Pulse width modulated (PWM) charge controllers turn on an off very rapidly, holding the batteries at full charge, making better use of available power.

Maximum power point tracking (MPPT) charge controllers take power from the charging source at a voltage where it can put out the most power (its maximum power point) and convert that to the correct voltage to charge the battery. This technique significantly increases the power from a solar array, especially when batteries are discharged, battery voltage is low, and the temperature is low causing the maximum power point voltage of the solar modules to be high. Most MPPT charge controllers can take an array voltage much higher that what is required by the batteries, allowing the use of modules with higher peak power voltage, designed for grid-tie use. A higher voltage solar array also allows smaller wire to be used between the array and the charge controller, which can save wire and installation cost in large systems. Maximum power point tracking allows a PV array to deliver up to 30% more power to a battery than it would if it were connected directly to the battery.



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OUTBACK FLEXMAX80 MPPT CHARGE CONTROLLER - 80 AMP, 12-48 VOLT DC
$642.00
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The FLEXmax80 (FM80) is the latest innovation in Maximum Power Point Tracking (MPPT) charge controllers from Outback Power Systems. Learn More
Morningstar Tristar Remote Digital Meter-2, P/N TS-RM-2
$159.95
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Morningstar remote digital meter for Tristar Charge Controllers. Learn More
MORNINGSTAR SUNKEEPER SK-6 CHARGE CONTROLLER - 6 AMP, 12 VOLT DC, OUTDOOR (IP65)
$62.95
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Morningstar’s SunKeeper solar controller provides a low cost regulated output directly from the solar module to maximize battery life in small solar power applications. Learn More
OUTBACK FLEXMAX60 MPPT CHARGE CONTROLLER - 60 AMP, 12-60 VOLT DC
$598.00
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The FLEXmax60 (FM60) is the latest innovation in Maximum Power Point Tracking (MPPT) charge controllers from Outback Power Systems. Learn More
KSOL Power Solar Box 10AM - 10 Amp, 12 VDC Morningstar Solar Charge Controller Enclosure System, Outdoor Rated
$309.95
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Weatherproof, vented enclosure houses a solar charge controller and DC circuit breakers for a solar system up to 10 amps. Just attach a solar module, battery and your 12 volt DC load. Learn More
KSOL Power Solar Box 30AM - 30 Amp, 12/24 VDC Morningstar Solar Charge Controller Enclosure System, Outdoor Rated
$479.95
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Weatherproof, vented enclosure houses a solar charge controller and DC circuit breakers for a solar system up to 30 amps. Just attach a solar array, battery bank and your 12/24 volt DC load. Learn More
KSOL Power Solar Box 20AM - 20 Amp, 12 VDC Morningstar Solar Charge Controller Enclosure System, Outdoor Rated
$324.95
Add to Cart
Weatherproof, vented enclosure houses a solar charge controller and DC circuit breakers for a solar system up to 20 amps. Just attach a solar module, battery and your 12 volt DC load. Learn More
REMOTE POWER SYSTEM - 15 AMP, 12 VDC CHARGE CONTROLLER / 79 AH BATTERY / 85 WATT PV MODULE, KSOL POWER
$1,079.00
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Perfect for remote telemetry system, oilfield service systems, remote lighting, and backup power. Learn More
REMOTE POWER SYSTEM - 15 AMP, 12 VDC CHARGE CONTROLLER / 97 AH BATTERY / 85 WATT PV MODULE, KSOL POWER
$1,248.00
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Perfect for remote telemetry system, oilfield service systems, remote lighting, and backup power. Learn More

Items 1 to 10 of 22 total

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  3. 3
per page

View as: Grid  List