Lifepo4 float setting?
I have not had to deal with a float setting so far with PWM controllers but I have a Victron 75/15 coming tomorrow and reading up on the settings,it is confusing especially the float setting..Some say...
Forum Discussion
The Garage guy is just saying what I had to do when on solar with the controller I used that would get the batt to Vabs set at 14.8 in my case, then drop to Float (which was adjustable) with no time at all in Absorb.
That happened before the battery was full and would leave the rest of the day in Float at low amps. So I had to set Float to the same as Bulk to keep the amps up till the battery was Full and could now drop to a lower Float voltage.
EP solar controller uses a standard charging profile where it stays in Bulk voltage 14.x for two hours (Absorb time) after getting the batt to that voltage, then it drops to Float 13.x automatically. If the battery is not yet full after the two hours, too bad.
So it is good to have Float voltage adjustable on the controller and also good if you can pick your Absorb time.
Same for any type of battery, not just LFP.
You need the monitor to know the battery SOC because the controller only knows what amps it is sending along, not where they are going-loads or battery or some to each. The monitor not the controller tells you when the batt is full so you know it is ok to have the controller at the lower Float voltage and so at lower amps.
That happened before the battery was full and would leave the rest of the day in Float at low amps. So I had to set Float to the same as Bulk to keep the amps up till the battery was Full and could now drop to a lower Float voltage.
EP solar controller uses a standard charging profile where it stays in Bulk voltage 14.x for two hours (Absorb time) after getting the batt to that voltage, then it drops to Float 13.x automatically. If the battery is not yet full after the two hours, too bad.
So it is good to have Float voltage adjustable on the controller and also good if you can pick your Absorb time.
Same for any type of battery, not just LFP.
You need the monitor to know the battery SOC because the controller only knows what amps it is sending along, not where they are going-loads or battery or some to each. The monitor not the controller tells you when the batt is full so you know it is ok to have the controller at the lower Float voltage and so at lower amps.
