Lithium Iron Phosphate Battery Discharge Curve

Lithium iron phosphate battery hereinafter referred to as lithium iron battery as a kind of iron battery has been widely concerned by friends in the industry some people say that lithium iron battery is actually a kind of lithium ion battery as far as iron batteries are concerned they can be divided into high iron batteries and lithium iron batteries.

Lithium iron phosphate battery discharge curve.

Therefore the gravimetric energy density of lifepo4 battery is 130wh kg four times higher than that of lead acid battery 35wh kg. 2 0 c 6. A lithium iron phosphate battery doesn t care if it is never fully charged so if all you have available is 3 3 volts and you don t mind the loss in capacity you could use the 3 3 volts. 2000 cycles 12v 6ah miady lithium iron phosphate battery rechargeable lifepo4 battery low self discharge and light weight for kid scooters fios replacement battery 4 6 out of 5 stars 238 29 99 29.

The voltage curve of a lithium ion battery is much different than that of a lead acid battery. Wid er tmp r atue rng. The discharge voltage curves of li manganese li phosphate and nmc are very flat and 80 percent of the stored energy remains in the flat voltage profile. However lithium ion batteries have a much flatter discharge curve which means that over a wide operating range the voltage at the battery terminals changes very slightly.

Lead based batteries have a more linear discharge where voltage consistently drops over time. Lithium iron phosphate technology has the flattest discharge curve which makes it very difficult to estimate soc on a simple voltage measurement. Stage 1 battery charging is typically done at 30 100 0 3c to 1 0c current of the capacity rating of the battery. Stage 1 of the sla chart above takes four hours to complete.

In comparison the lithium iron phosphate lifepo4 cell is a non aqueous system having 3 2v as its nominal voltage during discharge. While voltage based soc works reasonably well for a lead acid battery that has rested the flat discharge curve of nickel and lithium based batteries renders the voltage method impracticable. Delivers twice power of lead acid battery even high discharge rate while maintaining high energy capacity. Its specific capacity is more than 145ah kg.

The internal lithium iron phosphate battery from inside the n1c l1000 ups. Indeed the voltage. The stage 1 of a lithium battery can take as little as one hour to complete making a lithium battery available for use four times faster than sla. This opens up new possibility for a simple but very long life backup battery in 3 3 volt systems.