On 4/23/2017 10:44 AM, wrote:
I have zero knowledge of shunts. Maybe this evening.

I see the recommendation has company:

https://powerwerx.com/blue-sea-1732-...nel-dc-ammeter

rated at 100 amp shunt. If I add an external 100 amp shunt to the internal shunt what does the meter read ?

what is a shunt doing to the flow of electricity back to charging the battery ?


Problem is that you can't do it.
The external 100A shunt resistor is a 4-terminal Kelvin connection.
You'd have to jump thru some hoops to get the parallel resistance
calibrated, and then it would be relatively unstable over time.

Get a 200A 4-terminal shunt resistor and a meter that goes with it.