The lifespan of lithium iron phosphate battery is about 8 years, if the battery is properly maintained, the lifespan of the battery can reach more than 10 years.100 Ampere hours of lithium iron phosphate battery can be used for how long, mainly depends on the load of the 100Ah lithium iron phosphate battery operation, the running time is inversely proportional to the load for into the load, the lower the load, the longer the running time will be, the higher the load, the longer the running time will be. But the running time of the battery does not only depend on the load, but also related to the depth of discharge, battery condition, battery temperature condition and so on.
1.100Ah lithium iron phosphate battery calculation method
1.1 Calculation of lithium iron phosphate running load time
1.1.1 For example: a lithium iron phosphate battery with a capacity of 100Ah, if the total power consumption of the connected load is 600W, and the voltage of the lithium iron phosphate battery is 12V, calculate how long the lithium iron phosphate battery can run the load?
Watt = Ampere-hour x Voltage
Battery output current = 600W/12V = 50A
Running time of 100Ah LiFePO4 battery = 100Ah/50A = 2 hours
So a 100Ah LiFePO4 battery is capable of running for 2 hours.
1.1.2 For example, the total power consumption of a 12V 100Ah lithium iron phosphate battery connected to a load is 900W, and the running time:
Battery output current = 900W/12V = 75A
100Ah lithium iron phosphate battery running time = 100Ah/75A = 1.3 hours
So 100Ah Li-FePO4 battery can run for 1.3 hours.
1.1.3 For example, for example, there is a lithium iron phosphate battery with a capacity of 100Ah, connected to a 10 amp load, calculate how long the lithium iron phosphate battery can run the load?
Running time of 100Ah LiFePO4 battery = 100Ah/10A = 10 hours
So a 100Ah LiFePO4 battery can run for 10 hours.
1.1.4 For example, a 100Ah lithium iron phosphate battery connected to a load of 5 amps, run time:
100Ah lithium iron phosphate battery running time = 100Ah/5A = 20 hours
So 100Ah Li-FePO4 battery can run for 20 hours.
1.2 Consider the depth of discharge (DOD) of lithium iron phosphate battery
The depth of discharge (DOD) of Li-FePO4 battery also affects the running time of the battery, so it is necessary to take the watt-hours of Li-FePO4 battery x the depth of discharge (DOD) of the battery.
1.2.1 For example for example there is a lithium iron phosphate battery with a battery capacity of 100Ah, battery voltage of 12V,battery depth of discharge of 90%, connected to a 100W load, calculate how long the lithium iron phosphate battery can run the load?
Watt = Ampere hours x Voltage
Battery capacity converted to watt-hours = 100Ah x 12V = 1200W
Watt-hours of 100Ah lithium iron phosphate battery = 1200W x 90% (depth of discharge) = 1080W
Running time of 100Ah lithium iron phosphate battery = 1080W/100W = 10.8 hours
So 100Ah lithium iron phosphate battery can run 10.8 hours
1.2.2 For example, 12V 100Ah lithium iron phosphate battery, the depth of discharge of the battery is 100%, connected to a load of 50W, running time:
Battery capacity into watt-hours = 100Ah × 12V = 1200W
100Ah lithium iron phosphate battery watt-hours = 1200W × 100% (depth of discharge) = 1200W
Running time of 100Ah lithium iron phosphate battery = 1200W/50W = 24 hours
So the 100Ah Li-FePO4 battery can run for 24 hours
1.3 Consider the conversion efficiency of the inverter
As the output of the battery is DC, and we need to use AC power in life, you need an inverter to convert DC to AC, there will be some energy loss in the conversion process, so you need to be the number of watt-hours of lithium iron phosphate batteries × the conversion efficiency of the inverter.
1.3.1 For example for example there is a LiFePO4 battery with a capacity of 100Ah, a battery voltage of 12V,a battery depth of discharge of 90%, an inverter with a conversion efficiency of 90%, a load of 100W connected, calculate how long the LiFePO4 battery is able to run the load?
Watt = Ampere hours x Voltage
Battery capacity converted to watt-hours = 100Ah x 12V = 1200W
Watt-hours of 100Ah LiFePO4 battery = 1200W x 90% (depth of discharge) x 90% (conversion efficiency of inverter) = 972W
100Ah lithium iron phosphate battery running time = 972W/100W = 9.72 hours
So 100Ah lithium iron phosphate battery can run 9.72 hours
1.3.2 For example, 12V 100Ah lithium iron phosphate battery, the depth of discharge of the battery is 100%, the conversion efficiency of the inverter is 90%, connected to a 50W load, the running time:
Battery capacity into watt-hours = 100Ah × 12V = 1200W
Watt-hours of 100Ah lithium iron phosphate battery = 1200W × 100% (depth of discharge) × 90% (conversion efficiency of the inverter) = 1080W
Running time of 100Ah LiFePO4 battery = 1080W/50W = 21.6 hours
So 100Ah lithium iron phosphate battery can run for 21.6 hours
2. Factors affecting the use of 100 Ah lithium iron phosphate battery time
2.1 Self-discharge rate, lithium iron phosphate batteries after a period of storage, the self-discharge rate of the battery will decline, which will also affect the operating time of lithium iron phosphate batteries, lithium iron phosphate batteries, the battery’s self-discharge rate of 2% per month or so, can be stored for several weeks, will not affect the battery’s operating time.
2.2 Temperature, the temperature of the battery will also affect the operation time of lithium iron phosphate battery, in the extremely cold temperature environment, the battery’s operating time will be halved, and with the decline in temperature, lithium iron phosphate battery operating time will be further reduced. Lithium iron phosphate battery in the high temperature environment is suitable for strong, but do not be in a very high temperature for a long time, we have to protect the battery, maximize the service life of the battery, lithium iron phosphate battery to run longer.
2.3 Storage conditions, lithium iron phosphate battery storage conditions will also affect the operating time of the battery, it is recommended that the lithium iron phosphate battery is stored in a dry, temperature-appropriate environment. It is best to use a battery storage box, before placing the lithium iron phosphate battery fully charged, and regularly charge the battery. When we use the battery, the running time of the battery will not shrink much.
2.4 Avoid overcharging and discharging, overcharging lithium iron phosphate batteries will increase the internal temperature of the battery, affecting the service life of the battery. If the lithium iron phosphate battery is over-discharged, it will also accelerate the damage to the internal structure of the battery, affecting the capacity and cycle life of the battery. So, we need to avoid overcharging and discharging to maximize the operating time of lithium iron phosphate batteries.
2.5 Regular cleaning and maintenance, in the process of our use of lithium iron phosphate, lithium iron phosphate battery terminals may have corrosion, which will cause the power supply capacity of lithium iron phosphate batteries to decline, and the battery’s operating time will also decline, we need to regularly clean the corrosion of the lithium iron phosphate battery terminals, to maximize the assurance that the battery can run effectively.
Conclusion
100Ah lithium iron phosphate battery can run for how long, depending on a variety of factors, such as the self-discharge power of the battery, the depth of discharge of the battery, the temperature of the battery, etc., the specific 100Ah lithium iron phosphate battery running time has been described in detail above, you can refer to.
