Dc-Dc Charger

[T1 Terry]

Hi Eddy,
Be careful hooking one of the cheapie dc dc things to the solar input side of anything but an mppt unit that is specifically designed to limit current when xs solar input is connected. The victron one we have does this (we already had it so the dc dc thingo was a cheap add-on). If you hook it onto something that can't handle it, it may just fry itself and possibly whatever you connect it to.
But when used with the victron it works unbelievably well (so far anyway, only used it a couple of times for a couple of hours each time). I thought it would get hot and so mounted it on a bloody great heat sink.....but it stays cold and measured efficiency in our application has always been over 97%!!!!
Cheers, Leslie

Thanks for that update Leslie, certainly worth looking at if someone already has one of the Victron MPPT units that can have the output reduced and their system can handle only being charged at 20 amps via solar or the DC to DC. Getting multiple Victron MPPT units to work together is still something I haven't mastered, although I have been given a lead on how to do it I as yet have not followed it up to see if it does indeed work as desired.

T1 Terry