Help needed with development fast battery charger

avandalen

100 W
Joined
Oct 2, 2010
Messages
175
Location
Maastricht, The Netherlands
I came across a remarkably lightweight 36V 5A battery charger on Amazon. The power of the Amazon charger is 210W, but I suppose that it can be increased to 500W or more by changing the frequency and the windings.
Amazon-36V-5A-flyback-CR6842S-battery-charger-fill-500x268.jpg

See this article for all information:
https://www.avdweb.nl/solar-bike/electronics/lightweight-high-power-flyback-converter-battery-charger-with-the-cr6842s
Who can help with this interesting challenge? 

I also have 2 other questions in this article, who knows the answer to this?
 
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