This video compares the performance of AGM Batteries vs Lithium batteries in the cold. Everybody seems to know that Lithium batteries don't do well once temperatures fall below freezing, but to make sure we have an accurate comparison, we need to see how AGM batteries fare once the batteries fall below 0C.

Sources:
To Be Updated. (I went away for the day I published this and left my sources at the shop. I'll update this later this week.)

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