LiFePO4 fire safety

Warpspeed

Solar Addict
Joined
Jun 11, 2021
Messages
329
Golly, I have oxygen, acetylene, propane, and gasoline stored in my garage/workshop.
I also have several different types of fire extinguishes there as well. Big ones.
Soon I will have quite a few of those 280Ah LiFePO4 cells out there as well.
What I plan to do is split up the cells into groups of four, with sufficient distance between groups to prevent any fire spreading.
Its in a brick/concrete environment away from the house, so not terribly worried about fire, or toxic smoke.
 

timselectric

If I can do it, you can do it.
Joined
Feb 5, 2022
Messages
4,819
Golly, I have oxygen, acetylene, propane, and gasoline stored in my garage/workshop.
I also have several different types of fire extinguishes there as well. Big ones.
Soon I will have quite a few of those 280Ah LiFePO4 cells out there as well.
What I plan to do is split up the cells into groups of four, with sufficient distance between groups to prevent any fire spreading.
Its in a brick/concrete environment away from the house, so not terribly worried about fire, or toxic smoke.
These batteries will be the least Hazzardous thing in your garage. Maybe you should separate the oxygen, acetylene, propane, and gasoline.
 

Steve_S

Offgrid Cabineer, N.E. Ontario, Canada
Joined
Oct 29, 2019
Messages
6,031
Location
Rural NE Ontario Canada

NON-LFP but other Lithium Chemistries.
The temperature can quickly reach 500°C (932°F), at which point the cell catches fire or it explodes.”
SOURCE: https://resources.impactfireservices.com/how-do-you-put-out-lithium-ion-battery-fire

Can My LiFePO4 Battery Explode?

As previously explained, thanks to safety equipment, LiFePo4 batteries are extremely safe. During normal operations, there is no danger of explosion or ignition, and no chemical leakage will occur.

However, there are 2 situations in which a LiFePo4 could explode:

1. LiFePo4 Factory Default:

LiFePo4 batteries are manufactured by the hundreds of millions and there is a tiny chance of battery failure. It was calculated to be 1 in 10 million, quite small compared to the chance of being hit by lightning (1 in 13,000).

2. LiFePo4 In Contact With External Heat (More Than 200°C):

Several studies were conducted to assess the effect of overheating different lithium batteries. It was proven that LiFePo4 is the safest of all lithium-Ion batteries as their temperature rise is minimal. In addition, they will not propagate the fire to other batteries due to the highest thermal runaway.

LiFePo4 batteries will not burn until temperatures above 270°C are reached.
Source: https://climatebiz.com/lifepo4-battery/

 
Top