Renogy DC-DC Test Results-UPDATE 4 (Better!)
Updates 23 June--new test with Renogy input exposed for voltage readings Update 25 June more readings Update 4 - 27 June-- fewer amps with fat wire were noted this time! ----- I have the 20 ampe...
Forum Discussion
BFL13 wrote:
You can install yours and see what you get. The owner's manual says input amps will be 50% more than output amps at max amps, so expect 60 when yours is doing 40. It does say the unit will "perform better" with less voltage drop on the input side. It does not say that better performance will mean fewer amps.
remember it actualy says Up to 50% more. so that implys the more you reduce the loss the less it will be, but seing the min recomended size and that you were trying to tun it through the charging circut I dont think you could have dropped it down, nothing to defend at all, you were just trying to make it work with what you had.
BFL13 wrote:
There is also heat. The unit's fan comes on. Some watts are involved there.
yup, that would be acounted for in the efficency rating.
BFL13 wrote:
A lesson learned was to by-pass the 7-pin connectors for both pos and neg. Those connectors work for the signal lights but sure have high R for the 12v charging wire pins. If we still had the 5er, I would look at that even with no Renogy involved, where 7-pin charging is so lame.
I dont use that charging for anything. I disconcect it in the rv side of the plug, just because I have had batteries overcharged on long trips and such. I will have the same issue trying to run some big wires under the truck and I am not looking forward to running them, but at least I only have to do it once haha
