LifePo4 Voltage at .5C - .6C Discharge
Our two GC2's (with 100% charge) drop below 12v while under a 100a - 125a load. When they reach 50% (at 100a - 125a), voltage drops into the low 11's while under-load. What kind of under-load volt...
Forum Discussion
You will have seen that there are two "phases" to running the MW on inverter off the battery bank.
-initial voltage drop, say 1 volt as observed in the OP. This drop is the same whether you start at 90% SOC or at 50% SOC, same 1 volt drop.
-- gradual drop in voltage from then on as the load is running until you stop or the inverter quits. The flatter voltage curve for LFP helps there.
You might also get an advantage in running time in the second "phase" with the LFP compared with the same AH worth of FLA. Makes no sense to me, but I am still struggling with that notion. It is all this Power /Energy thing
You would have to compare the batteries' Discharge Rate Constant Current tables to see if the times are longer for LFP than for your 6s.
-initial voltage drop, say 1 volt as observed in the OP. This drop is the same whether you start at 90% SOC or at 50% SOC, same 1 volt drop.
-- gradual drop in voltage from then on as the load is running until you stop or the inverter quits. The flatter voltage curve for LFP helps there.
You might also get an advantage in running time in the second "phase" with the LFP compared with the same AH worth of FLA. Makes no sense to me, but I am still struggling with that notion. It is all this Power /Energy thing
You would have to compare the batteries' Discharge Rate Constant Current tables to see if the times are longer for LFP than for your 6s.
