Victron Energy SCC125110412 Smart Solar MPPT 250/100-Tr VE Can Charge Controller

Ultra-fast Maximum Power Point Tracking (MPPT) Especially in case of a clouded sky, when light intensity is changing continuously, an ultra-fast MPPT controller will improve energy harvest by up to 30% compared to PWM charge controllers and by up to 10% compared to slower MPPT controllers. Advanced Maximum Power Point Detection in case of partial shading conditions If partial shading occurs, two or more maximum power points may be present on the power-voltage curve. Conventional MPPTs tend to lock to a local MPP, which may not be the optimum MPP. The innovative SmartSolar algorithm will always maximize energy harvest by locking to the optimum MPP. Fully programmable charge algorithm (see the software page on the Victron website), and eight pre-programmed algorithms, selectable with a rotary switch (see manual for details).

Tech Tip Connecting solar panels in series makes for a higher input voltage to the MPPT controller which gives it more to work with and greater efficiency.  It also makes for less voltage drop in the wires.   The first number of the model number is the maximum input voltage, the second number is the maximum amperage