Home>Charge controllers>PWM controllers

PWM type charge controllers are meant for charging batteries using the (older and smaller) 36-cell solar modules. A 36-cell PV module produces around 18 Volt, perfect for charging a 12 Volt battery without the need to convert that Voltage. For a 24 Volt battery bank you need 72 cells, by either putting two 36-cell panels in series or by using a larger 72-cell panel. PWM controllers in essence are a switch that directly connects the panels to the batteries, switching on and off rapidly, causing those panels to work at the same Voltage as the batteries. If a 60-cell panel (that produces most power at 30 Volt) is connected to a PWM controller and 12 Volt battery you will loose about half of the output power due to the Voltage mismatch! When Voltage conversion is needed it requires an MPPT type charge controller.

  • Conext Xantrex C35

    Conext / Xantrex C35, a 35A PWM charge controller, for 12 / 24 VDC batteries


    $168.90
    Conext / Xantrex C35, a 35A PWM charge controller, for 12 / 24 VDC batteries
  • Conext Xantrex C40

    Conext / Xantrex C40, a 40A PWM charge controller, for 12 / 24 / 48 VDC batteries


    $219.00
    Conext / Xantrex C40, a 40A PWM charge controller, for 12 / 24 / 48 VDC batteries
  • Conext Xantrex C60

    Conext / Xantrex C60, a 60A PWM charge controller, for 12 / 24 VDC batteries


    $255.00
    Conext / Xantrex C60, a 60A PWM charge controller, for 12 / 24 VDC batteries
  • Enerwatt EWC-10

    Enerwatt EWC-10, 10 Amp 12 Volt PWM charge controller, with display


    $44.82
    Enerwatt EWC-10, 10 Amp 12 Volt PWM charge controller, with display