Batteries, Lithium, Medium level -

Iron or Ion ???? Lithium batteries explained...

Are you also confused? Is it Lithium Ion or Lithium Iron? And what is LiFePO4?

Lithium Iron Phosphate Solar Batteries

A lithium-ion battery (or Li-Ion) is rechargeable kind of battery with lithium cobalt dioxide (LiCoO2) or lithium manganese oxide (LiMn2O4) as a cathode or can also be a LiFePO4 battery.


A lithium-iron battery is also a rechargeable type of battery but made with Lithium Iron Phosphate (LiFePO4) as the cathode material; the “Li” is for Lithium, the “Fe” is for Iron, and “PO4” stands for phosphate (might sound familiar if you paid attention during chemistry class ;-)).


You could say that Lithium-iron is a member of the lithium-ion battery family; A Lithium iron battery is a lithium-ion battery as well, but not every lithium-ion battery is a Lithium Iron battery.




Most other Li-ion batteries have in general a higher energy density than LiFePO4 batteries, meaning that most Li-Ion batteries are lighter for the same capacity, but LiFePO4 is slowly closing the gap, for example, Tesla is now looking into using LiFePO4.


LiFePO4 has an edge over the Li-ion battery in chemical and thermal stability and is, therefore, safer than the other Li-ion batteries. LiFePO4 batteries do not have the “thermal runaway” that can happen in other batteries, the spontaneous fire that occurred in a particular brand of phones.


In terms of durability, LiFePO4 is more durable than the other Li-ion batteries as the LiFePO4 charge/discharge cycles are higher. Other Li-ion batteries have a maximum of 1,000 cycles, while LiFePO4 can be discharged for at least 4,000 cycles with many more if managed carefully.


Another plus for the LiFePO4 battery is that it doesn’t use Cobalt, an element that has been in the news recently, as child labour is being used to mine Cobalt.


Have a look at SunStore's Lithium Iron Phosphate LiFePO4 Batteries.


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Iron or Ion ???? Lithium batteries explained...


1 comment

  • Martin

    Price on a 3 and 5 kv offgrid system? Can this system be build on a mobile trailer and battery durability? I’m in the process of building a mobile system as a demo and need your input on the do and dont’s…so if this system is a success it can be mass preduced! Regards Martin 0826591062

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