3 tons wrote:
In the interest of discovery, it appears that SiO2’s charging parameters may for many rule out the solar harvesting option... On a different note, I’m not sure whether a standard SOC meter (with FLA algos) would be compatible with SiO2 or not?? (I’ve not found any info)...I emailed this question to a popular vendor but as of yet have have not received a response (so much for email format I suppose :) )
3 tons
The AH counting battery monitor doesn't care. An AH is an AH. You do have to use the battery's own volt/SOC table though.
The story is you can leave the SiO2 undercharged for say a month, no harm, and then do a proper charge to 100%, something like the regime with LFPs.
So if the solar shallow cycling and lower amps or whatever is not getting them full every day and with enough amps, it shouldn't matter much, as long as you do the 100% every so often.
However, it would matter with regular AGMs not getting to full every day because they would sulphate. In that case you have to get them to 100% more often before the sulphate hardens so you can do a "recondition" overcharge with the AGMs (carefully since they are sealed batts)
SiO2 with solar should be good for that reason, like LFPs, where they do not have to get up to 100% each cycle or else sulphate.
If you charge them at 15 amps instead of 25 amps but get them to 14.5v every time, then how many lifetime cycles do you lose? would be the question I guess, but that is the same question for ordinary AGMs.