I can’t answer for the original poster but it isn’t necessarily more eco friendly, depending on where you get the electricity from to run it.
From a safety concern maybe, for obvious reasons but wait till your LifePo4 catches fire and good luck with extinguishing that (look at electric cars catching fire).
Even though historically Germany together with gas has a bad reputation I am not worried about the gas in my Cali
Lithium Phosphate batteries have a very stable chemistry and very low risk profile for fire. Lithium Ion and NMC are the riskier types. Unless you heat them above 200C for extended periods or have a severe puncture it’s a moot point.
More detailed response below:
LiFePO4 (lithium iron phosphate) batteries, often abbreviated as LFP, are a type of lithium-ion battery known for their enhanced safety profile compared to other chemistries like NMC (nickel manganese cobalt) or NCA (nickel cobalt aluminum). The risk of them catching fire is extremely low under normal operating conditions, making them one of the safest lithium-based battery options available. 1 0 11 24
Why LiFePO4 Batteries Have Low Fire Risk
• Stable Chemistry: The cathode material (iron phosphate) forms strong bonds with lithium ions, which prevents excessive heating and reduces the likelihood of thermal runaway—a chain reaction where heat causes further degradation, potentially leading to fire. This stability means LiFePO4 batteries operate at lower temperatures and are less reactive than batteries using cobalt or nickel. 8 24
• Higher Thermal Thresholds: Thermal runaway in LiFePO4 batteries typically requires extreme overheating, with trigger temperatures around 185–200°C (depending on state of charge), often only under simulated abuse like exposure to adjacent battery failures. In contrast, other lithium-ion types can enter thermal runaway at lower temperatures (e.g., 150–170°C for some NMC variants). 25 24
• Built-in Safety Features: Most LiFePO4 batteries include a Battery Management System (BMS) that monitors voltage, temperature, and current to prevent overcharging, over-discharging, or short circuits—common precursors to fires in less stable batteries. 24
• Resistance to Abuse: Tests show they often don’t ignite even when punctured, short-circuited, or drilled, unlike other lithium-ion batteries that can erupt in flames under similar stress. 9 10
Conditions Where Fire Risk Increases
While fires are rare, they can occur under extreme or abusive conditions:
• Overheating: Prolonged exposure to very high temperatures (e.g., above 200°C) can cause the internal separator to melt, leading to short circuits and potential combustion. This might happen in scenarios like a fire from an external source or failure in a battery pack where one cell overheats others. 25 24
• Physical Damage: Severe punctures, crushing, or impacts can compromise the battery’s structure, releasing flammable electrolytes or gases (e.g., CO, HF, H2), though LiFePO4 is less likely to ignite than other types. 4 24
• Manufacturing Defects or Improper Use: Faulty production, using incompatible chargers, or overcharging without a BMS can increase risks, but these are mitigated by buying from reputable manufacturers. 24
• Higher State of Charge (SOC): Batteries at 50–100% SOC release more heat and gases during failure, potentially leading to jet fires, but these are still less violent than in other chemistries. 25
Real-World Incidents and Comparisons
Documented fires specifically involving LiFePO4 batteries are exceedingly rare, with most reported lithium-ion battery fires (e.g., over 25,000 incidents in a five-year period per U.S. Consumer Product Safety Commission data) stemming from other chemistries like those in consumer electronics, e-bikes, or electric vehicles using NMC or similar. 17 26 21 24 According to the Battery Safety Council, LiFePO4 incidents are far fewer than those involving cobalt- or nickel-based batteries, often due to misconceptions conflating all lithium-ion types. 24 No large-scale LiFePO4-specific fire outbreaks appear in recent reports; high-profile events (e.g., factory fires in Taiwan or Spain) typically involve non-LiFePO4 lithium-ion cells. 15 22
In summary, the fire risk for LiFePO4 batteries is minimal—often described as “incombustible” or “fire-safe” for everyday use in applications like solar storage, RVs, or EVs—provided they are handled properly and equipped with a BMS. If safety is a primary concern, they are a superior choice over traditional lithium-ion batteries.
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