Smart Shunt Comparison

[bcborn]

Looking at the two Victron IP21 300A and the IP65 300A, is the difference just in the dust and water protection (sealed wires). Is Bluetooth any better on one than the other?

To me, if your not using the Aux and VE.Direct would it make sense to go with the IP21 Unit for a cleaner install (less wires).

Reading about the Temp Sensor (702/712), seems Victron does not make a plug and play (for a better term) senser that connects to the two leads (VBat/Aux) of the IP65 unit.

If running a Lithium Battery with Bluetooth capability and supporting phone app, is a shunt required?

[Brucey]

@bcborn

If running a Lithium Battery with Bluetooth capability and supporting phone app, is a shunt required?

In general battery bms SOC will never be as accurate as a smartshunt, they tend to have issues seeing smaller loads and will drift from reality.

[bcborn]

When grounding a shunt to chassis ground, does it matter if the chassis ground goes through a buss (multiple grounds)

or

Should the chassis ground go through the shunt first then to the buss to collect all other grounds

See dotted lines on attachment

first then to shunt.

Current OEM chassis ground wire is 6 Ga

[GUMPY (Julian Tether)]

[quote=“bcborn, post:1, topic:51767”]

If running a Lithium Battery with Bluetooth capability and supporting phone app, is a shunt required?

[/quote]

Most definitely

My LifePo4 battery lies to me all the time. It just doesn’t seem the 5w discharge caused by the RPi monitoring system so says 100% when the SS says 60%>

[pwfarnell]

Regarding the chassis ground it does not matter which dotted line is used as they are both on the system side of the shunt.

[bcborn]

What about Wire Size?

Does the shunt to chassis ground wire need to match the largest load (inverter 2/0 wire).