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You can get the controllers shown in the video here (affiliate links):
MPPT:
Ebay: http://rover.ebay.com/rover/1/711-532...
Amazon.de: http://amzn.to/2sYscJS
PWM:
Ebay: http://rover.ebay.com/rover/1/711-532...
Aliexpress: https://s.click.aliexpress.com/e/_dSj...
Amazon.de: http://amzn.to/2s331Sj
http://amzn.to/2sYIqCw

In this VS episode I will compare an expensive MPPT solar charge controller with two cheap PWM solar charge controller from China. I will mostly talk about how much power they can draw from the solar panel and when it makes sense to use a cheap PWM controller and when an expensive MPPT controller.

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)