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Charge Controllers
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A charge controller is used to keep the voltage across the battery within acceptable limits.  The charge controller automatically regulates, stops, or diverts power when batteries become fully charged.   Charge controller capacities range from 4 A to 100 A and multiple charge controllers can be used in parallel for larger systems. Some charge controllers offer additional features including charge status display, data logging, automatic equalisation charging, generator starting, and even lighting control.

The simplest charge controllers disconnect the power source (solar) when the battery reaches a set voltage, and turn it on when a low voltage set point is reached.  

Pulse Width Modulated (PWM) charge controllers turn on and off very rapidly, maintaining the batteries at full charge voltage, which results in quicker and more complete battery charging.  

Maximum Power Point Tracking (MPPT) charge controllers optimize the voltage of the PV array to maximise total power output then convert that to the correct voltage to charge the battery bank.  This process significantly increases the power from a solar array, particularly in low temperatures when battery voltage is significantly below the PV array voltage.  Most MPPT charge controllers work with higher array voltages, which can greatly reduce the required wire size between the array and the charge controller.  Whole more expensive than PWM controllers, MPPT charge controllers can boost system performance by up to 30% making them very cost effective.

MPPT Charge Controllers

The table below shows our selection of MPPT Charge Controllers. Click through on the model number for more in-depth detail.
Please make use of the free on-line String Sizing Apps to calculate solar array sizing.   
Max Output Current
96A @ 12VDC
94A @ 24VDC
86A @ 48VDC
Maximum Recommended PV
Maximum Array Voltage: 150Vdc
Max Output Current
79A @ 12VDC
78A @ 24VDC
76A @ 48VDC
Maximum Recommended PV
Maximum Array Voltage: 200Vdc
Max Output Current
61A @ 12VDC
62A @ 24VDC
55A @ 48VDC
Maximum Recommended PV
Maximum Array Voltage: 250Vdc
Max Output Current
30A @ 12VDC
30A @ 24VDC
30A @ 48VDC
Maximum Recommended PV
Maximum Array Voltage: 150Vdc
Max Output Current
60A
Maximum Recommended PV
Maximum Array Voltage: 150Vdc
Max Output Current
80A
Maximum Recommended PV
Maximum Array Voltage: 150Vdc
Max Output Current
80A
Maximum Recommended PV
Maximum Array Voltage: 300Vdc
Max Output Current
15A @ 12VDC
15A @ 24VDC
Maximum Recommended PV
200W/12V
400W/24V
Maximum Array Voltage: 60Vdc
Max Output Current
25A @ 12VDC
25A @ 24VDC
Maximum Recommended PV
350W/12V
700W/24V
Maximum Array Voltage: 120Vdc
Max Output Current
40A @ 12VDC
40A @ 24VDC
Maximum Recommended PV
550W/12V
1100W/24V
Maximum Array Voltage: 120Vdc
Max Output Current
30A @ 12VDC
30A @ 24VDC
Maximum Recommended PV
400W/12V
800W/24V
1600W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
45A @ 12VDC
45A @ 24VDC
45A @ 48VDC
Maximum Recommended PV
600W/12V
1200W/24V
2400W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
60A @ 12VDC
60A @ 24VDC
60A @ 48VDC
Maximum Recommended PV
800W/12V
1600W/24V
3200W/48V
Maximum Array Voltage: 150Vdc
includes TS-M2 meter
Max Output Current
60A @ 12VDC
60A @ 24VDC
60A @ 48VDC
Maximum Recommended PV
800W/12V
1600W/24V
3200W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
60A @ 48VDC
Maximum Recommended PV
Maximum Array Voltage: 600VDC
Input power can exceed Nominal Maximum Operating Power, but controller will limit and provide its rated continuous maximum output current into batteries. This will not harm the controller.
Max Output Current
20A @ 12VDC
20A @ 24VDC
Maximum Recommended PV
300W/12V
600W/24V
Maximum Array Voltage: 120Vdc
Max Output Current
30A @ 12VDC
30A @ 24VDC
Maximum Recommended PV
400W/12V
800W/24V
Maximum Array Voltage: 120Vdc
Max Output Current
40A @ 12VDC
40A @ 24VDC
Maximum Recommended PV
560W/12V
1120W/24V
Maximum Array Voltage: 120Vdc
Max Output Current
15A @ 12VDC
15A @ 24VDC
Maximum Recommended PV
200W/12V
400W/24V
Maximum Array Voltage: 100Vdc
Max Output Current
30A @ 12VDC
30A @ 24VDC
Maximum Recommended PV
440W/12V
880W/24V
Maximum Array Voltage: 100Vdc
Max Output Current
50A @ 12VDC
50A @ 24VDC
Maximum Recommended PV
700W/12V
1400W/24V
Maximum Array Voltage: 100Vdc
Max Output Current
45A @ 12VDC
45A @ 24VDC
45A @ 48VDC
Maximum Recommended PV
650W/12V
1300W/24V
2600W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
60A @ 12VDC
60A @ 24VDC
60A @ 48VDC
Maximum Recommended PV
860W/12V
1720W/24V
3440W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
70A @ 12VDC
70A @ 24VDC
70A @ 48VDC
Maximum Recommended PV
1000W/12V
2000W/24V
4000W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
100A @ 12VDC
100A @ 24VDC
100A @ 48VDC
Maximum Recommended PV
1450W/12V
2900W/24V
5800W/48V
Maximum Array Voltage: 150Vdc
Max Output Current
60A @ 12VDC
60A @ 24VDC
60A @ 48VDC
Maximum Recommended PV
860W/12V
1720W/24V
3440W/48V
Maximum Array Voltage: 250Vdc
Max Output Current
100A @ 12VDC
100A @ 24VDC
100A @ 48VDC
Maximum Recommended PV
1450W/12V
2900W/24V
5800W/48V
Maximum Array Voltage: 250Vdc
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PWM Charge Controllers

The table below shows our selection of PWM Charge Controllers. Click through on the model number for more in-depth detail.

It is important to note that PWM charge controllers have limited voltage correction capabilities and should only be used with 36 or 72 cell modules connected in series or parallel to match the battery voltage.
Rated Solar Input
4.5A @ 12VDC
Maximum Solar Voltage
30V
Regulation Voltage :
14.1 Volts
Rated Solar Input
6A @ 12VDC
Maximum Solar Voltage
30V
Regulation Voltage :
14.1 Volts
Float Voltage :
13.7 Volts
Rated Solar Input
12A @ 12VDC
Maximum Solar Voltage
30V
Regulation Voltage :
14.1 Volts
Float Voltage :
13.7 Volts
Rated Solar Input
6A @ 12VDC
Load Current
6A
Maximum Solar Voltage
30V
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Rated Solar Input
6A @ 12VDC
Load Current
6A
Maximum Solar Voltage
30V
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Load Disconnect / Reconnect
11.5 / 12.6 Volts
Rated Solar Input
10A @ 12VDC
Load Current
10A
Maximum Solar Voltage
30V
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Rated Solar Input
10A @ 12VDC
Load Current
10A
Maximum Solar Voltage
30V
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Load Disconnect / Reconnect
11.5 / 12.6 Volts
Rated Solar Input
10A @ 24VDC
Load Current
10A
Maximum Solar Voltage
60V
Regulation Voltage: Sealed / Flooded
28.2 / 28.8 Volts
Load Disconnect / Reconnect
23.0 / 25.2 Volts
Rated Solar Input
20A @ 24VDC
Load Current
20A
Maximum Solar Voltage
60V
Regulation Voltage: Sealed / Flooded
28.2 / 28.8 Volts
Load Disconnect / Reconnect
23.0 / 25.2 Volts
Rated Solar Input
20A @ 12VDC
Load Current
20A
Maximum Solar Voltage
30V
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Load Disconnect / Reconnect
11.5 / 12.6 Volts
Rated Solar Input
10A @ 12VDC
Load Current
10A
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Load Disconnect / Reconnect
11.7 / 12.8 Volts
Rated Solar Input
20A @ 12VDC
Load Current
20A
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Load Disconnect / Reconnect
11.7 / 12.8 Volts
Dual Battery Charging
Rated Solar Input
25A @ 12VDC
Load Current
10A
Maximum Solar Voltage
30 Volts
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Float Voltage
13.7 Volts
Dual Battery Charging With Remote Meter
Rated Solar Input
25A @ 12VDC
Load Current
10A
Maximum Solar Voltage
30 Volts
Regulation Voltage: Sealed / Flooded
14.1 / 14.4 Volts
Float Voltage
13.7 Volts
Rated Solar Input
30A @ 12 / 24 VDC
Load Current
30A
Maximum Solar Voltage
30 / 60  Volts
7 Standard Battery Settings + Custom option
Low Voltage Disconnect / Reconnect
11.4 / 12.6 Volts or Custom
22.8 / 25.2 Volts or Custom
Rated Solar Input
15A @ 12 / 24 VDC
Load Current
15A
Maximum Solar Voltage
30 / 60  Volts
7 Standard Battery Settings + Custom option
Low Voltage Disconnect / Reconnect
11.4 / 12.6 Volts or Custom
22.8 / 25.2 Volts or Custom
Charge or Load or  Diversion Control
Rated Solar Input
45A @ 12 / 24 / 48 VDC
Load Current
45A
Maximum Solar Voltage
125 Volts
7 Standard Battery Settings + Custom option
Charge or Load or  Diversion Control
Rated Solar Input
60A @ 12 / 24 / 48 VDC
Load Current
60A
Maximum Solar Voltage
125 Volts
7 Standard Battery Settings + Custom option
Rated Solar Input
30A @ 12 / 24 VDC
Load Current
30A
Maximum Solar Voltage
60V
7 Preset Charge Settings via DIP switch or Meter
Rated Solar Input
10A @ 12 / 24 VDC
Load Current
10A
Maximum Solar Voltage
60V
7 Preset Charge Settings via DIP switch or Meter
Rated Solar Input
20A @ 12 / 24 VDC
Load Current
20A
Maximum Solar Voltage
60V
7 Preset Charge Settings via DIP switch or Meter
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Charge Controller Accessories

Please click on the links to look at accessories for MPPT and PWM Charge Controllers

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