Victron Easysolar ll configuration for lead carbon batteries

[zedrex]

So about 18 months ago I installed our solar system, Victron Easysolar ll 48/5000/70-48 connected to 8 200ah lead carbon batteries (12v 200ah), running in 2 sets of 4.
I have yet to find a definitive guide to configuring the Victron for these batteries, the supplier has been less than helpful. Does anyone have any guidance for this?
Many thanks in advance.

 

[sunshine_eggo]

You don't need a guide. You need battery data. The batteries should have charge criteria. You simply program the unit to match those.

Guide:
1) Find battery absorption voltage, absorption duration/tail current and float voltage.
2) Program hardware to those values.

 

[zedrex]

That makes sense and that's where I'm stuck, I found the charge voltage but not the absorption voltage, absorption duration/tail current and float voltage. The local supplier doesn't seem to know and no response from the chinese manufacturer.
The batteries are Shoto FTC 200's if thats of any help, I've googled exhaustively and can't find those figures

 

[zedrex]

You don't need a guide. You need battery data. The batteries should have charge criteria. You simply program the unit to match those.

Guide:
1) Find battery absorption voltage, absorption duration/tail current and float voltage.
2) Program hardware to those values.

So having googled again, I've found the float voltage to be 13.88 (2.23 per cell, 6 cells)
Max charging current is 51V with 34V being recommended (which I already knew) but can't find any of the absorption figures

 

[mikefitz]

Link to data does not work , will add screen shots.

What I make of this is, the battery is a sort of GEL/AGM that is intended for standby applications rather that frequent cycling. Temperature compensation seems to be important.
Charge volts, (absorbtion volts) 14.1 to 14.2, at 25 degC, float at 13.5 volts. Terminate absorbtion on tail current or a long absorbtion as you can get in the solar day.

 

[zedrex]

Link to data does not work , will add screen shots.View attachment 276813View attachment 276814View attachment 276815View attachment 276816

What I make of this is, the battery is a sort of GEL/AGM that is intended for standby applications rather that frequent cycling. Temperature compensation seems to be important.
Charge volts, (absorbtion volts) 14.1 to 14.2, at 25 degC, float at 13.5 volts. Terminate absorbtion on tail current or a long absorbtion as you can get in the solar day.

Thanks for the response, I have only just seen it.
So reading through on these Shoto batteries the absorption and equalisation charge voltage are the same?
Also these lead carbon batteries are specifically for solar installations, we've been running them for 18 months and they seem to be working well.
Can you provide a link to your source for the screenshots please, that way I can dig deeper to satisfy my curiosity!