Renogy Charge Controllers
A charge controller sits between the panels and the battery and decides how hard to charge it. Renogy makes two families: PWM controllers (Wanderer, Adventurer, Voyager) for small 12V arrays, and MPPT controllers (Rover, Rover Li, Rover 2, Rover Lite, REGO) that take higher-voltage panels and harvest more from them.
How to choose a Renogy charge controller
Match the controller to the panels' open-circuit voltage and total watts. The Wanderer Li 30A accepts up to 25V, so it suits 12V-class panels; Renogy's 200W N-Type and ShadowFlux panels need an MPPT. At 12V Renogy rates the Rover Li 20A for 260W, the 30A for 400W and the 40A for 520W of panels. Renogy charge controllers explained compares every model, and Rover or Victron SmartSolar covers the other common choice. Pair it with panels from solar panels.
Do I need MPPT or is PWM enough?
PWM is fine for one or two 12V-class panels. Choose MPPT for higher-voltage panels, panels wired in series, or an array you plan to grow.
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