15 amp Adjustable Voltage Regulator

I designed this original to run 12v devices on my 20v solar panels, but it can be used to step down voltage up 36v. I can charge my RC batteries on my Graupner charger with my 160w panel only. Most solar chargers require a battery but this solar controller does not.

15 amp Adjustable Voltage Regulator: https://www.amazon.com/gp/product/B00C9UUFHC/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=ericsdiy714-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B00C9UUFHC&linkId=4e6721aa5ee896a68ed819f62633bc47

Parameters:
Input voltage: 4-32V (36V Max)
Output voltage: 1.2-32V (adjustable,default output 5V)
Min voltage difference: 1V
Output current: 0-15A(10A for long-term work)
Input fuse: 15A
Operating temperature: -40°c to +85°c
Working frequency: 150KHz
Conversion efficiency: up to 98%
Module size: 60mm x 51mm x 22mm
Installation: 4x 3mm screws

12 v 25mm X 25mm fan: https://www.amazon.com/gp/product/B00C9UUFHC/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=ericsdiy714-20