I have a small system that will occassionally go below freezing and I was intending to count on the BMS stop any below freezing charging while unattended during the winter. I was somewhat surprised to get this back from support:
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Hi,Mr Fraser
BMS will automaticlly switch off the charging function if under 0
we recommend you to cut off the connection between solar charge controller and the battery , move the battery to a warm place beyond 0 , and charging the battery with a lithium battery charger
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Sounds like it will switch off below 0 - but doesn't sound like something to rely on if their recommendation is to break off the connection.
I will put in a controlled warming system as discussed in other threads, a complication I thought would be unnecessary.....
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Hi,Mr Fraser
BMS will automaticlly switch off the charging function if under 0
we recommend you to cut off the connection between solar charge controller and the battery , move the battery to a warm place beyond 0 , and charging the battery with a lithium battery charger
====
Sounds like it will switch off below 0 - but doesn't sound like something to rely on if their recommendation is to break off the connection.
I will put in a controlled warming system as discussed in other threads, a complication I thought would be unnecessary.....