I'm really frustrated trying to get my LiFePO4 battery string to charge past 26.3 volts. I've successfully charged each of my 12V batteries (six in total, set up in a series-parallel configuration for 24V) to 14.4 volts. However, when I load them, my charge controller seems to limit the charging to around 26.3 volts. This is causing my batteries to run out of power around 4 a.m., forcing me to switch back to line power. Is this an issue with my charge controller? It's supposed to reach a maximum charging voltage of 14/28V, and my batteries are all less than a year old.
1 Answer
It sounds like you might just need to adjust the settings on your charge controller to match the recommended LiFePO4 charging voltages. Sometimes, the float charge settings are too low, which can prevent the batteries from reaching higher voltages. Definitely check those settings and ensure they're aligned with what your batteries need to properly charge.
Yeah, if you can change the voltage settings, aim for 28V during absorb/bulk and set the float around 26.8V. These adjustments can make a big difference!