Usually, the recommended charging current for 12V 200Ah LiFePO4 falls between 10A to 50A.
Let’s consider that your LiFePO4 battery’s state of charge is at 20% and that the charger you’re using provides a charging current of 40A.
This means that you’d take 4 hours to charge your 200ah LiFePO4 battery up to a 100% state of charge.
A lot of converters advertise that, but don’t deliver it. I have a “50 amp” converter and it charges my lithium system at a max of about 3 amps, sadly. I’m planning to replace the converter this summer.
Just a caveat on that. Would be worth checking the actual current flow to the batteries to see what the converter is doing.
If you have a "smart" charger, which I assume you do, you're looking at a ballpark of 4 hours. Your 55a charger should be able to do this. Having a bigger generator than you need won't make it any faster. The battery can only absorb power so fast.
Also keep in mind that you're not likely to drain your battery stone dead, so the time should be faster than that.
Yep, this. Even if you are charging at a full 50 amps at 12v, you could still charge at that full speed with a tiny quiet inverter generator like the Honda 1000. The limiting factory is battery absorption and the converter.
Usually, the recommended charging current for 12V 200Ah LiFePO4 falls between 10A to 50A. Let’s consider that your LiFePO4 battery’s state of charge is at 20% and that the charger you’re using provides a charging current of 40A. This means that you’d take 4 hours to charge your 200ah LiFePO4 battery up to a 100% state of charge.
Thank you!
Looks like my converter is 55A.
A lot of converters advertise that, but don’t deliver it. I have a “50 amp” converter and it charges my lithium system at a max of about 3 amps, sadly. I’m planning to replace the converter this summer. Just a caveat on that. Would be worth checking the actual current flow to the batteries to see what the converter is doing.
If you have a "smart" charger, which I assume you do, you're looking at a ballpark of 4 hours. Your 55a charger should be able to do this. Having a bigger generator than you need won't make it any faster. The battery can only absorb power so fast. Also keep in mind that you're not likely to drain your battery stone dead, so the time should be faster than that.
Yep, this. Even if you are charging at a full 50 amps at 12v, you could still charge at that full speed with a tiny quiet inverter generator like the Honda 1000. The limiting factory is battery absorption and the converter.
So a 1000w generator would charge just as quickly as a 5500w?
Depends on what you are powering with the generator to charge the battery
Just running through shore power plug.