question

roachmon avatar image
roachmon asked

Lowest temp for Smart LiFePO4 DC load operation?

Hey there,

I know the Victron Smart LiFePO4 batteries should not charge below 41*F/5*C. Is it still OK to discharge and run DC loads at 41*F/5*C or below? What would the low temp cut off be for discharging the batteries, if there is one?

Thanks for your input!

battery chargingdischarge level
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1 Answer
wkirby avatar image
wkirby answered ·

As a rule of thumb, discharge is OK down to -20°C, although you should expect lower battery Voltage and capacity as it gets colder.
Lithium plating starts to occur when charging below 5°C which causes irreversable damage by permanently reducing the capacity of the cell. This chemical process does not occur when discharging.

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https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf


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