Is it normal for new batteries to not fully charge?

[Ron62]

I just upgraded my batteries to EG4 server rack they arrived at about 26 volts two out of 4 doc lights lit. I hooked them to my system yesterday. Today they won’t charge above around 27 volts. I have them set to 28.5 I called signature solar they said it’s normal and they just need to cycle a couple weeks and they will correct themselves. Is this normal ? Also I’m running 2 midnight solar 150 controllers should I set them to 50 amps each or 100? The guy at signature said 100 but that means 200 amps will go into the buss bar right? I just want to be sure this was a big investment for me. I’ve been off grid 10 years but these are my first lithium batteries It’s 6 EG4 batteries. Thanks

 

[Darren67-72]

Using voltage for the s.o.c can be deceiving. Allow the batteries to cycle for a few weeks and see what you get. S.S. is a good co. And are likely to take care of any issues you may have.
As far as charge rates... completely your choice. Lifepo batteries can take a lot of power quickly. Go by the battery spec. Or less for the first month and you should be happy with your purchase.

 

[time2roll]

Assuming the vendor is saying the cells need time to internally balance with each other I would look to slow down the top charge. Maybe run one controller at 100 to 26.5 volts and the second at 20-25 amps up to 28 volts. Once the voltage comes up regularly put both on max assuming all is within specification and design.

 

[Ron62]

Assuming the vendor is saying the cells need time to internally balance with each other I would look to slow down the top charge. Maybe run one controller at 100 to 26.5 volts and the second at 20-25 amps up to 28 volts. Once the voltage comes up regularly put both on max assuming all is within specification and design.

Thanks