Upgrading converter
Hey folks! I am looking at the BD 1255 MBA 55 Amp 4-Stage Main Board Replacement. I have a WFCO 8955 PEC. I am looking to upgrade to a couple Golf Cart batteries this year and we do a lot of boon ...
Forum Discussion
"I did measure the red and white leads coming from the converter with no battery hooked up and it measured 14.65 (aprox). I measured the white ground and red lead in the battery compartment and it read the same. I then hooked up the batteries and measured, 12.something, don't recall the exact number. That tells me that when not hooked up the converter is trying to charge at max level, then when hooked up it is going into float mode? maybe?.."
The converter is working properly.
When you connect to low batteries you will now see the battery voltage up to where the converter has charged it so far. With time the battery voltage will rise through the 12s and 13s to the 14s until it is fully charged. The WFCO only stays at 14.4 for four hours, which may not be enough time to get the batteries to 14.4 so you could then start over by unplugging the 120v from the WFCO (or the whole RV) and then plug back in. That should get you another four hours of 14.4 to get more time to get the batteries fully charged.
After they get to 14.4 they may be only 80% charged so now they have to hold at 14.4 for a while when amps taper down to near zero at which time the batts are full and can be dropped to charging at 13.x. Hours and hours maybe.
Once they are fully charged the WFCO can be at 13.6 as normal for when camping and plugged in. If plugged in and not camping, then with no 12v activity for a day or two (whatever) it should drop to 13.2v for "storage" to "Float" the battery.
What you want to know is the voltage of the batteries before you connect to the WFCO. Since they are 12.x connected, that means they must have been 11.x or lower before, which is almost "dead". So whatever happened when they were out of the rig was bad for them. Should have been on a "maintenance charger".
I have four GC15 6v 230AH batts in the Class C and they are excellent.
The converter is working properly.
When you connect to low batteries you will now see the battery voltage up to where the converter has charged it so far. With time the battery voltage will rise through the 12s and 13s to the 14s until it is fully charged. The WFCO only stays at 14.4 for four hours, which may not be enough time to get the batteries to 14.4 so you could then start over by unplugging the 120v from the WFCO (or the whole RV) and then plug back in. That should get you another four hours of 14.4 to get more time to get the batteries fully charged.
After they get to 14.4 they may be only 80% charged so now they have to hold at 14.4 for a while when amps taper down to near zero at which time the batts are full and can be dropped to charging at 13.x. Hours and hours maybe.
Once they are fully charged the WFCO can be at 13.6 as normal for when camping and plugged in. If plugged in and not camping, then with no 12v activity for a day or two (whatever) it should drop to 13.2v for "storage" to "Float" the battery.
What you want to know is the voltage of the batteries before you connect to the WFCO. Since they are 12.x connected, that means they must have been 11.x or lower before, which is almost "dead". So whatever happened when they were out of the rig was bad for them. Should have been on a "maintenance charger".
I have four GC15 6v 230AH batts in the Class C and they are excellent.
