Please clarify the "shouldnt be connected to lithium batteries"? Do you mean electrically or physically?So it seems like I have seen a couple times that the temp sensor shouldnt be connected to lithium batteries, I think my xantrex or Victron monitor may have been one but is there a particular reason or am I dreaming? Thanks for the input!
Good question Bud, seems to me it was a wire that came with the meter or charger but I think it was the meter that said not to use it. I think it is the current Victron meter I have, maybe the 712?? So pretty sure it had a lug on it to connect to the positive of batteryPlease clarify the "shouldnt be connected to lithium batteries"? Do you mean electrically or physically?
Also the ref where this info is from?
Tim, I think that is probably what it was. Thanks for info!If you are talking about the charger temperature sensor that you used to connect to led acid batteries.
Then no, it's not used for Lithium phosphate batteries.
Correct, Lifepo4 batteries don't heat up like led acid.Tim, I think that is probably what it was. Thanks for info!
Would it not be used because the BMS monitors it??
But if you hooked it up it hurts nothing I assume? I didnt hook it up on mine but just wanted some info on why or if there is a reason it shouldnt be. Thanks in advanceCorrect, Lifepo4 batteries don't heat up like led acid.
They have less internal resistance. The charging current doesn't have to be forced into them.
That's a different sensor than the one used for led acid batteries. Always follow manufacturers instructions. Otherwise you could be voiding the warranty.My temperature sensor from my VIctron 712 is the main way to stop under temp charging on lithium batteries. The temp sensor is used to trigger the SCC to stop charging below a certain temp, and set lower than that is the BMS‘S temp sensor. BMS should not be the primary way to disconnect. Not sure how the BMS would react to 100 amps from the solar panels being stopped with the FETs for hours on end. Using the Victron 712 to stop the SCC, that current is not there.
So yes, still connect the Victron temp sensor for that.
You don’t need to worry about temp compensation like lead acid, but the VIctron 712 battery monitor networks with otherVictron Devices for many uses.
Correct, connecting it doesn't hurt anything.But if you hooked it up it hurts nothing I assume? I didnt hook it up on mine but just wanted some info on why or if there is a reason it shouldnt be. Thanks in advance
That is not a different sensor. I think you’re making things up.That's a different sensor than the one used for led acid batteries. Always follow manufacturers instructions. Otherwise you could be voiding the warranty.
How do you get not to use because its unsafe on the BMV 712 temperature sensor out of:lol
Good luck and be safe.
Thanks for the input Rmaddy! this controller can also be used for Lead Acid so you probably have it correct!When charging LA batteries the charger can adjust the charging based on the temperature. That feature shouldn't be used with LiFePO₄. I've seen that referred to as temperature or voltage compensation.
That's different from using a temperature sensor with LiFePO₄ to discontinue charging if the temperature gets below a certain level.
I don't have any experience with the Renogy product but it might be possible to use it for charging disconnect and not for voltage compensation when applied to LiFePO₄.