Join Date: Feb 2016
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I've played with DROK products before (I think it was a small dc-dc converter), they come out of china and and instructions are pretty limited but they worked as described. I don't have any direct experience with this specific monitor. There are a lot of youtube videos on these units as they have several. Jehu on youtube builds DIY "powerwalls" and battery banks, and he uses these monitors a lot on his projects.
As for measuring input and output independently, there is no way to do that with a single shunt or hall sensor as you'll have discharge and charge at the same time so there is no way for it to know what you are discharging at the same time you are charging. To my knowledge, there is no battery monitor with two inputs (one shunt on the charge sources and one shunt on the discharge).
Current caretaker of the Backroader 159" wb