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BlueSolar 12/24V 20A PWM Charge Controller (LCD-USB)

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BlueSolar 12/24V 20A PWM Charge Controller (LCD-USB)

The BlueSolar PWM Charge Controller series uses Pulse Width Modulation (PWM) charge voltage control combined with a multistage charge control algorithm.

Victron's Blue Solar PWM USB-LCD charge controllers offer a low cost solution for solar charge regulation with the benefit of an LCD display for setup and system monitoring, plus integrated USB charging ports. A selectable charge algorithm allows optimised charging for wet, AGM, GEL and LiFePO4 batteries (LiFePO4 batteries must have on-board battery management) and built-in battery protection prevents over discharge of the battery by consumers connected to the 'Load' terminals of the controller.

PWM controllers are most effective in warmer climates where clear skies are expected and partial shading of the panel is not likely to occur (e.g. under trees). In these conditions, and when used in smaller systems, they have a performance comparable with MPPT controllers.

This controller is recommend for panels up to around 250W output with a maximum solar voltage of 28V (12V systems) or 55V (24V systems). For a 12V battery system the solar panel should be 36 cells and for a 24V system the panel should be 72 cells or 2 x 36 cells in series.


*PWM Technology
*LCD display
*Twin USB sockets - 5V, 2A (total for both outputs)
*Programmable charge algorithms for wet, AGM, GEL and LiFePO4 batteries
*Programmable dusk/dawn control of load output (useful for controlling exterior lights)
*Low voltage battery protection (when using controller load output)
*Battery reverse polarity protection (fuse)
*Output short circuit protection
*Over-temperature protection


System voltage: 12V/24V auto detected by controller
Max. rated charge current: 20A
Max. solar voltage: 28V (@ 12V) / 55V (@ 24V)
Factory set charging voltage for 12V systems: Absorption 14.4V / Float 13.7V (adjustable via battery-type selection)
Low voltage load disconnect: 11.2V (@ 12V)
Low voltage load re-connect: 12.6V (@ 12V)
Self power consumption: < 10mA
Max. cable size that fits terminals: 6mm²
Operating temp: -35 to +60°C
Overall dims: 96 (H) x 169 (W) x 36 (D) mm

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