Help with choosing proper converter amperage
I'm finally replacing my failing converter and am looking at the INTELI-POWER 9200 SERIES CONVERTER/CHARGER - 60 AMPS. My question is, my trailer currently has the WFCO 55 amp (yeah, yeah WFCO.....I ...
Forum Discussion
2 group 27 batterys is going to be around 180amp-hrs.
The bulk charge should generally be limited to around 25% of the amp-hr number (45amps in your case). A little more isn't a big deal but crazy high 70-90amps, won't charge the batteries any faster and if poor design can damage the batteries.
The bigger issue for you is how will your charging happen. If you won't be boondocking and running the generator to charge...presumably, you will be plugged in for a period in excess of 12hrs. To replace 180amp-hrs in 12hrs, would require 15amps. Of course, you should never use more than 30-50% of the amp-hrs, so even that is a bit high. Going a bit bigger allows the charger to cover 12v loads while still charging the batteries, so 25-30amps should be good.
Now if you plan to start boondocking more and using the generator, putting back something in the 40-60amp range should be fine if it doesn't cost much more.
Also make sure to get a multi-stage charger. As the batteries near full, thier charging needs change and multi-stage chargers do a better job.
With 50amp power, it's probably not a big deal but a big charger can draw a lot of amps. If you are on a 30amp pedestal (no 50amp pedestal available), you may have to wait for the converter to catch up before you can run the air/con.
The bulk charge should generally be limited to around 25% of the amp-hr number (45amps in your case). A little more isn't a big deal but crazy high 70-90amps, won't charge the batteries any faster and if poor design can damage the batteries.
The bigger issue for you is how will your charging happen. If you won't be boondocking and running the generator to charge...presumably, you will be plugged in for a period in excess of 12hrs. To replace 180amp-hrs in 12hrs, would require 15amps. Of course, you should never use more than 30-50% of the amp-hrs, so even that is a bit high. Going a bit bigger allows the charger to cover 12v loads while still charging the batteries, so 25-30amps should be good.
Now if you plan to start boondocking more and using the generator, putting back something in the 40-60amp range should be fine if it doesn't cost much more.
Also make sure to get a multi-stage charger. As the batteries near full, thier charging needs change and multi-stage chargers do a better job.
With 50amp power, it's probably not a big deal but a big charger can draw a lot of amps. If you are on a 30amp pedestal (no 50amp pedestal available), you may have to wait for the converter to catch up before you can run the air/con.
