12000XP not compatible with 48v lead acid batteries? Unable to set absorb or equalize above 59v

[ddxv]

Previously I thought the issue was just some settings, but after calling Signature Solar they told me that 59v is a hard limit set by NEC standards.

This causes an issue because the 48v lead acid battery manufacturer states the default absorb charge should be 60 and more importantly the equalize is 63v.

59v is ok for the charge, but it seems we've lost the ability to equalize our battery bank.

Does this sound correct? Is the work around to look into changing battery bank to 24v?

I get the feeling EG4 is not very compatible with lead acid batteries.

 

[Quattrohead]

So I just set it to 59v and see how it goes. No one is using lead acid batteries anymore if they can help it.

 

[Solar Guppy]

This causes an issue because the 48v lead acid battery manufacturer states the default absorb charge should be 60 and more importantly the equalize is 63v.

Very unusally lead-acid values. Standard is 57.6 for bulk and absorb and 54 for float. Equalize is 2.5V per cell or 60V, what batteries are you using that want such high values?

 

[ddxv]

Source:

Calculating Proper Charge Settings for Rolls Flooded Lead-Acid Batteries

This article will provide detailed instructions relating to proper charging and system programming for Rolls flooded lead-acid batteries. For additional information, please refer to Rolls Battery User Manual. Improper charge settings and fai...

support.rollsbattery.com

Very unusally lead-acid values. Standard is 57.6 for bulk and absorb and 54 for float. Equalize is 2.5V per cell or 60V, what batteries are you using that want such high values?

Yeah? This is the manual I was looking at. Same manufacturer of our cells.

 

[ddxv]

Also, here's another older manual. Seems there were definitely a couple of them that had equalization above 60.