Energy Matters Forums

Hi guy's,
Just joined this forum after reading some of the awesome threads regarding lifepo4 batteries.
I am in the process of designing and building a caravan to live in, and plan on installing a large lifepo4 pack and solar.
One question i have not been able to find an answer to is how much heat do these cells generate when charged and discharged at under 0.2C.
The cells will be inside the van, it will be fibreglass foam sandwich construction and well insulated. They will be in their own cupboard. Will they need extra fan type ventilation or will being inside the living area be enough to keep them cool?
Your help in this matter would be much appreciated.
Cheers, Al.

Welcome to the Energy Matters Forums Al

At around 0.2C charging rate, the heat produced is minimal. I have never noticed my 400AH 52V battery getting warm when charging at up to 0.25C. They are a lot more efficient than Lead-acid batteries, and produce much less heat when charging or discharging.

Thanks for the welcome and the reply Gordon.
Sounds like the battery should be fine without ventilation then
Cheers Al.

Also consider the maximum operating temperature and the minimum charging temperature.

charged my 400ah/48v lifepo4 battery, 50% SOC with 140A. the battery was 2 degrees C warmer at the end.