SiO2 Batteries and High Amp Draws
SiO2 is a specialty battery type that most folks would have no use for vs the usual RV battery types. They cost a lot too.( I had a special reason to get one) Here is some info on them --I am not s...
Forum Discussion
otrfun wrote:
BFL13, interesting info, thanks!
How low (of a SOC) can a SiO2's be safely discharged on a regular basis?
Your max load appears to be ~90a. Maybe I missed it, but will the voltage on your 200ah bank of SiO2's stay above the inverter's low-voltage cut-off while under a 90a (.45c) load at its minimum recommended SOC?
They say you can run them down to Zero SOC many times no problem, but I have seen ads for AGMs saying the same thing.
So you can run them down past what would trip the inverter to just run ordinary low amp RV loads ok
The voltage drop is also from wiring not just from the batteries, so if I had fatter wiring and all that, the inverter could go lower in battery SOC before tripping, so my result could be different from another guy's with the same battery
I count the "0.45C" as using the C at the time, not the rated C when at 100% SOC, so watch for that when reading my numbers. Eg the 90 amps when the 200AH bank is at 110AH is 90/110 = 82% draw the way I do it.
I only took it to the inverter alarm at 11v not to the cut off at 10.5v so I don't know how much farther down in SOC it would go to get to 10.5
They have a somewhat higher voltage per SOC than Flooded batts so that helps with going lower in SOC before tripping the inverter too.
