Hi,
I ran across this video in which the person placed an LFP battery in a freezer for 48 hours, then immediately charged the battery (which has no low temperature charge protection), he then did a capacity test and the battery showed no loss in capacity. Being a bit surprised by this, he repeated the whole process again with the same result - no loss of capacity.
So, he did two charges with the battery at 2.5F with no apparent ill affects.
The cold charge experiment starts at about 7 minutes into the video. Note that the title of the video gives no hint of the cold charge test, but its there at 7 minutes.
So, what's going on here?
The cautions on not charging cold LFP batteries is just universal on the internet.
Is it not as big an issue as we think? Any data on this - that is, measurement of the damage done vs temperature, charge rate, type of LFP cell?
Any thoughts on whether one could tolerate a cold charge once in a while?
Gary
I ran across this video in which the person placed an LFP battery in a freezer for 48 hours, then immediately charged the battery (which has no low temperature charge protection), he then did a capacity test and the battery showed no loss in capacity. Being a bit surprised by this, he repeated the whole process again with the same result - no loss of capacity.
So, he did two charges with the battery at 2.5F with no apparent ill affects.
The cold charge experiment starts at about 7 minutes into the video. Note that the title of the video gives no hint of the cold charge test, but its there at 7 minutes.
So, what's going on here?
The cautions on not charging cold LFP batteries is just universal on the internet.
Is it not as big an issue as we think? Any data on this - that is, measurement of the damage done vs temperature, charge rate, type of LFP cell?
Any thoughts on whether one could tolerate a cold charge once in a while?
Gary