Murphyslaww
New Member
Howdy,
I have an off-grid shed/studio system with 4x300 watt panels wired to a combiner box to an epever Tracer8420AN, and two powerqueen 200ah LIFEP04 12v batteries wired in parallel. The Voltage showing on the controller and that on the Inverter (RoarBatt 2000w) differ by about .5 to .7 volts at any given time for battery reading. I think this is affecting settings on the Epever for float settings, and I'm thinking that the Epever is not fully charging the batteries. When the Inverter is reading 13.0, the Epever is reading around 13.5 to 13.6.
If I disconnect the PV and Epever from the battery, it matches what the Inverter is reading. This leads me to believe I have the settings for float and boost charge too low on the Epever, and 13.6 set on the Epever may only be charging the batteries to 13.0. I've been moving those settings up, cautiously, as the array may only be charging to maybe 30-40% of capacity, and that bears out when the Mini-split attached to it runs down the battery in an hour or two when it seems like, mathematically, it should run all day with fully charged 13.5v batteries at 5000kw capacity and the PV putting out at least 400watts, and the Mini-split only using around 600-700 watts.
Any other places to look?
I have an off-grid shed/studio system with 4x300 watt panels wired to a combiner box to an epever Tracer8420AN, and two powerqueen 200ah LIFEP04 12v batteries wired in parallel. The Voltage showing on the controller and that on the Inverter (RoarBatt 2000w) differ by about .5 to .7 volts at any given time for battery reading. I think this is affecting settings on the Epever for float settings, and I'm thinking that the Epever is not fully charging the batteries. When the Inverter is reading 13.0, the Epever is reading around 13.5 to 13.6.
If I disconnect the PV and Epever from the battery, it matches what the Inverter is reading. This leads me to believe I have the settings for float and boost charge too low on the Epever, and 13.6 set on the Epever may only be charging the batteries to 13.0. I've been moving those settings up, cautiously, as the array may only be charging to maybe 30-40% of capacity, and that bears out when the Mini-split attached to it runs down the battery in an hour or two when it seems like, mathematically, it should run all day with fully charged 13.5v batteries at 5000kw capacity and the PV putting out at least 400watts, and the Mini-split only using around 600-700 watts.
Any other places to look?