I am going to provide the cable information here just in case Amazon quits selling them. The cable I used with the 4 pin cable that fits my 436 is a Promaster 3696, and the 5 wire cable that fits the 436 GPS port is YCSbasics part number U2GH5W2-B and it's distributed by Yourcablestore.com according to the package. Their phone number is 877-972-2253 . I bought both cables from Amazon
I read a post on here about a year or so ago (guess on the timeline) that the 436 draws 200 ma when turned on. It was part of a discussion about 2500 mah batteries charging in the scanner in 9 hours. I had written it down on the back of my manual. I wasn't part of the discussion. Just was reading it back then