Relion Lithium-Ion batteries (2 x 100-Amp)

[popotla]

As onboard batteries I have two x 100-amp Relion Lithium-Ion, set up to operate with a VBCS 60/40/430 Triple Votronic battery charger.

How low can the displayed voltage safely go? On the read-out, what is "12.8 volts", for example, telling me? To get some more charge in there?

There is a point, isn't there, at which discharge will happen rather rapidly. What is this point?

I'm not managing to find online the info that would help me.

 

[Tombola]

12.8 is fine esp if they are being used at the time you measure it. Here is the data sheet. You will see the "nominal voltage" i.e. the volts it puts out when in use fully charged
you havent any problems, till you get down to 12.2 ish, even then if in use it will rise when not in use. though Lithium does tend to drop off quickly at the latter end I think the relion has a bms ? to help .

EDIT: i get the feeling you may have seen a certain youtubers video regards the relion dropping out on him? dont take too much notice from that. They are good to go if used and installed properly.
Lithiums + b2b+solar+ehu = winner if you are a high power user

i

 

[cyberyacht]

Do you have a low voltage cutout setting on the controller. You could set at a higher value than the spec sheet. I note that you appear to be able to charge below freezing.