ls1mike
$50 Site Donor 2025
No reason really. I had some of the stuff like the Romex laying around.
Renogy solar power install out building.
- Thread starter ls1mike
- Start date
JHZR2
Staff member
Phosphate electrolyte burns quite well, so that’s not entirely true.
JHZR2
Staff member
This really is great. Practical size systems that make use of the right spots where sun is shining. Not these stupid solar companies that want to sell $50k of panels and installation to make your bill go to zero. It lets loads be offset, or power to be available in alternate locations in a practical way.
ls1mike
$50 Site Donor 2025
Hole in the roof. I am good with the roofing stuff. I put that roof on myself about 7 years ago. I have flashing, sealant and that little white box that seals to the shingles.
True, but they don't have the thermal runaway problems that Li-ion does. Far safer.
Actually, I went and did some looking, as I realized I wasn't 100% sure on my position.
From: https://www.dtgpower.com/post/do-lithium-iron-phosphate-batteries-catch-fire
"Lithium Iron Phosphate ((LiFePO4 or LFP)) batteries are incombustible, meaning they will not burn when exposed to fire or when mishandled during rapid charges and discharges or when there are short circuit issues. Manufacturers across industries turn to LFP for applications where safety is a factor. LFP has excellent thermal and chemical stability. This battery stays cool in higher temperatures. LFP does not normally experience thermal runaway, as the phosphate cathode will not burn or explode during overcharging or overheating as the battery remains cool."
From: https://www.relionbattery.com/knowl...X_6ZPERbvpNpHxXujgd_rjfxwJMU7ZT4rnB0R0N0VUhLu
"Phosphate-based batteries offer superior chemical and mechanical structure that does not overheat to unsafe levels. Thus, providing an increase in safety over lithium-ion batteries made with other cathode materials. This is because the charged and uncharged states of LiFePO4 are physically similar and highly robust, which lets the ions remain stable during the oxygen flux that happens alongside charge cycles or possible malfunctions. Overall, the iron phosphate-oxide bond is stronger than the cobalt-oxide bond, so when the battery is overcharged or subject to physical damage then the phosphate-oxide bond remains structurally stable; whereas in other lithium chemistries the bonds begin breaking down and releasing excessive heat, which eventually leads to thermal Runaway. Lithium phosphate cells are incombustible, which is an important feature in the event of mishandling during charging or discharging. They can also withstand harsh conditions, be it freezing cold, scorching heat or rough terrain. When subjected to hazardous events, such as collision or short-circuiting, they won’t explode or catch fire, significantly reducing any chance of harm. If you’re selecting a lithium battery and anticipate use in hazardous or unstable environments, LiFePO4 is likely your best choice. It’s also worth mentioning, LiFePO4 batteries are non-toxic, non-contaminating and contain no rare earth metals, making them an environmentally conscious choice."
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JHZR2
Staff member
I’ve had more LiFePO4 safety tests than I can count t that would counter that.
Sure, phosphate holds its oxygen and doesn’t energetically decompose.
This is almost irrelevant to the safety posture. If they get abused they’ll go up and propagate like any other. Then it comes down to pack design, not chemistry…
