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Shunt Recommendations- Would like one with a physical (non bluetooth) Meter

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Ryujin

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Pretty much the title says it all-
I've read enough here to know that a shunt is the only way to truly measure your batteries capacity/ Charge, just measuring the voltage won't give a full picture.

I'm wondering if there are any recommendations you have for a shunt that I can just read directly/has a display wired a distance instead of needing to use a smartphone/tablet.

Will be using a 24 V system with AGM batteries, the max load (non surge) on the inverter would be 3000 W, so 160 amps. (Bought ANL fuses rated at 200 amps)
 
Victron BMV-712 has both the smart shunt (500a) and physical display. Best of both worlds. Highly recommend the temperature sensor addon, as well.
 
The Good Package said:
Victron BMV-712 has both the smart shunt (500a) and physical display. Best of both worlds. Highly recommend the temperature sensor addon, as well.
Click to expand...
Would the temperature sensor just let me know the temperature (possibly give an alert?), or would it change something in the system to adjust for the temperature?

Thermometers are cheap, my SCC already has a built in temperature sensor and readout, and that Vicron is like $200 vs the WonVon 400A is $80.

Appreciate the recommendation regardless!
 
There is a temp sensor built into the WonVon, never even noticed it till I just went to check . It also has features to control relays, I'll get to them once I finish some of the other infinite projects. I'm hoping to use that feature to heat water when my batteries get full.
Photos of wired and wireless display attached (I use a cheap tablet for monitoring wirelessly over BT)
 

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Ok I think I'm sold on the WonVon for now, thanks everyone.
 
Horsefly said:
That WonVon looks like just a re-labeled JuncTek battery monitor. Several of us here on the forum have the JuncTek and are happy with it.
Click to expand...
From what I've read here it is the same. WonVon sounded better than JuncTek and I think there was a coupon when I ordered ?
 
For AGM batteries you need to consider charge efficiency and Peukert constant . Victron Smart Shunt and BMV 712 allow these variables to be programmed Into the device to accurately compute battery status.
Not 100% sure that the WanVon offers this feature. Charge efficiency and Peukerts constant have little effect on lithium battery battery status computation, with lead acid batteries there can be significant errors.
The Victron battery monitors offer a midpoint monitoring for series batteries. This is a useful feature that indicates battery Inbalance where batteries are connected in series.

Mike
 
Last edited:
Partsjockey said:
Will this shunt do 2 batteries like the Victron?
Click to expand...
What shunt are you considering?

All shunt based monitors will work with series batteries, my comments about mid point monitoring is that Victron also monitor the midpoint voltage. Batteries In series , two 12v batteries to form a 24 volts system, can over time, get out of balance, the batteries having different SOC. By monitoring the mid point voltage and indicating an alarm, steps can be taken to rectify the inbalance.

Mike
 
Not sure yet. I have 24v system going to parallel second battery to it and what to keep an I on it.
 
Well you sort of monitor each battery status with a series shunt in each negative path before connecting to the common system negative.
Would be interesting where batteries of different capacity are connected in parallel.
 
mikefitz said:
For AGM batteries you need to consider charge efficiency and Peukert constant . Victron Smart Shunt and BMV 712 allow these variables to be programmed Into the device to accurately compute battery status.
Not 100% sure that the WanVon offers this feature. Charge efficiency and Peukerts constant have little effect on lithium battery battery status computation, with lead acid batteries there can be significant errors.
The Victron battery monitors offer a midpoint monitoring for series batteries. This is a useful feature that indicates battery Inbalance where batteries are connected in series.

Mike
Click to expand...
I commented on the forum about some of the things I wished the JuncTek allowed to be set, such as charged/full voltage, tail current, and charged detection time (all things you can set on the Victron SmartShunt and battery monitor). They ended up contacting me to ask for more details, and then they added them. I didn't ask for efficiency or peukert exponent because I only have LiFePO4 and (as you said) those are not of much use for LiFePO4. At that time (maybe early last year?) they seemed willing to add such features.
 
Horsefly said:
I commented on the forum about some of the things I wished the JuncTek allowed to be set, such as charged/full voltage, tail current, and charged detection time (all things you can set on the Victron SmartShunt and battery monitor). They ended up contacting me to ask for more details, and then they added them. I didn't ask for efficiency or peukert exponent because I only have LiFePO4 and (as you said) those are not of much use for LiFePO4. At that time (maybe early last year?) they seemed willing to add such features.
Click to expand...
I'm assuming this required updating the firmware and/or app?
 
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