Fotoman
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Battery monitor
- Thread starter Fotoman
- Start date
The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
OP
OP
Fotoman
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Two batteries, the second one being optional.
bobofthenorth
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Connected that way the monitor will read voltage only on the auxilliary battery. There's a variety of reasons why you might want (or not want) that but that's what you'll get if you wire it that way.
OP
OP
Fotoman
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Not sure this is correct. The voltage will be*read on both batteries (small wires going from the positive posts to the device. The shunt is to read the amperage...
bobofthenorth
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Read the manual.* You can't measure amps unless they pass through the shunt.
OP
OP
Fotoman
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And your point is?
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Eric,
The system will read voltage from the House (H) and Start (S) batteries, but will only read current flow into and out of the H batt and SOC of the H bank.* That is where the shunt comes in.* The current flows from the bottom of the shunt (as pictured) to the top of the shunt.
If the S batt neg was connected to the incoming (bottom) side of the shunt, the Link Lite would read the current from both batts and not give you the accurate SOC of the H bank.* By connecting the S batt neg downstream from the shunt, it will not count that current as having come from the H bank.
*
*
The system will read voltage from the House (H) and Start (S) batteries, but will only read current flow into and out of the H batt and SOC of the H bank.* That is where the shunt comes in.* The current flows from the bottom of the shunt (as pictured) to the top of the shunt.
If the S batt neg was connected to the incoming (bottom) side of the shunt, the Link Lite would read the current from both batts and not give you the accurate SOC of the H bank.* By connecting the S batt neg downstream from the shunt, it will not count that current as having come from the H bank.
*
*
JD
Guru
*Actualy the shunt would be reading the main battery.* It's ground goes to one end of the shunt and the ground for all systems on the boat goes to the other.* Still*one battery unless the shunt has some internal wiring we don't know about.
OP
OP
Fotoman
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Thanks Flywright, makes sense now. I appreciate the explanation.
-- Edited by Fotoman on Tuesday 27th of March 2012 04:57:48 PM
-- Edited by Fotoman on Tuesday 27th of March 2012 04:57:48 PM
FF
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A shunt is not in the start circuit ground because there it could be a FUSE, most will only pass 500A .
