diy solar

diy solar

How to configure growatt inverter to work with gel batteries

Jd01

New Member
Joined
Sep 22, 2022
Messages
7
I have a 48v system of 4 gell battery I want to ask how to use them with growatt inverter and what the optimal config to maximize the life of the battery and their SOH ? Or should I use the default AGM config of growatt
 
GEL are not AGM. Very different and charging GEL like AGM will kill them.

User settings. Program for the battery specified absorption and float voltages - typically 14.0 (x4) and 13.8 (x4), respectively.
Thanks for your reply I have the following battery information as you can see in the attached photo. what are the absorption voltage and float voltage?
 

Attachments

  • IMG_20230301_084800.jpg
    IMG_20230301_084800.jpg
    174.6 KB · Views: 23
"cyclic" is what you want.

Are you 100% certain that's a GEL battery? 14.6-15.0 is absurdly high for an actual GEL battery. It's more typical of AGM.
It is a euronet 12v 200ah, in their site they say it is a gel battery when I opened the box I get this paper as manual for charging the battery? So what should I do. I am using 56 for charging and 55.2 for float for 48v system
 
Last edited:
Well, I'm not going to argue with the manual.

I would stick with 14.6 x 4 = 58.4V bulk/boost/absorption

and 13.6 x 4 = 54.4V float.

At 58.4V, it's critical that NONE of the 12V batteries are over 15.0V - preferably, they're all at very nearly 14.6V.

If you didn't so so before you made 48V, you should individually charge the 12V to 14.6V.
 

diy solar

diy solar
Back
Top