Aislinn Fox
New Member
- Joined
- Feb 11, 2020
- Messages
- 10
A beginner type of question related to LiFePO4 batteries. I have noticed that manufactures use C ratings for battery charge and discharge rates. For example, a 1.0 C rate is identified as the maximum rate you should use and 0.2 C rate is used to have a more extended life.
There is also information from the manufacture on loss of capacity of the battery at 3000 or 3500 cycles with typical capacities at 80% after that many cycles.
My question is when looking at the maximum discharge rate of 1.0 C, is that rate based on the new fresh battery capacity or does it change as the battery gets older? For example, if a 100 Amp battery is new then I would expect 1 C is 100 Amp/hr. However, if it is 10 years old and degraded to 80% of its original max capacity is the 1 C rating still 100 Amp/hr or is it now 80 Amp/hr?
Thank you for your help.
There is also information from the manufacture on loss of capacity of the battery at 3000 or 3500 cycles with typical capacities at 80% after that many cycles.
My question is when looking at the maximum discharge rate of 1.0 C, is that rate based on the new fresh battery capacity or does it change as the battery gets older? For example, if a 100 Amp battery is new then I would expect 1 C is 100 Amp/hr. However, if it is 10 years old and degraded to 80% of its original max capacity is the 1 C rating still 100 Amp/hr or is it now 80 Amp/hr?
Thank you for your help.