FWC wrote:
If you actually want to use the full capacity of your battery you need to deal with the absorb phase every charge.
Furthermore you will greatly decrease the life by not performing a full charge. Say you plan on using 80% of the capacity of your battery, with a full charge you will cycle between 20% - 100% SOC and should get about 1500 charge cycles. If you stop the charge at the end of the bulk phase, you will be cycling from 0% - 80% SOC and only get the mythical 628 cycles out of your battery. Which would you choose?
pianotuna wrote:
FWC yes, with SiO2 you have to deal with an absorb phase, once every 30 days. I'm sorry you see that as such a hardship.
For those of you who really want Li at an extremely competitive price surf here: https://ablithium.com/
$400 for 100 amp-hours, drop in with BMS. Plus shipping.
My own opinion is that SiO2 have never caught on due to their high price. Some how Li has circumvented that.
As to Li such as battleborn, they are really a 120 amp-hour battery with a BMS that cuts off the bottom 20 amp-hours. I wonder how that will work out as the batteries age?
And where did you see absorb starts at 80%? For ordinary flooded it starts at 85%, with 12.5 amps per 100 amp-hours of capacity. Are you saying SiO2 are worse than flooded? For AGM absorb starts at about 90%. I'd love the information on the state of charge where absorb starts, for SiO2. I'm hopeful that it will be at 95%.
Please quote correctly from the web sites you may access. It is 620 cycles to 0 volts at which time 80% of OEM capacity is still available. I suggest that the number of cycles on an AGM to 0 volts is a heck of a lot less than 620.
SiO2 outshine AGM at peak demand, even with telcom jars that are intended for high amperage discharges. i.e. over 300 amps from a single 100 amp-hour battery.
There is no question that I could use AGM used telcom batteries for less money overall. But I wish to never buy batteries again. So I'll spend a bundle on SiO2 after I'm vaccinated.
I am needful of being able to boondock and run an O2 concentrator overnight. I will NOT run a generator while sleeping. My existing battery bank can no longer support the concentrator overnight.
Even for a full time person 1500 cycles is over four years. I expect
I will be oversizing the battery bank to give me 480 usable amp-hours (or 5.7 kwh). That compares to just 278 from the telcoms (or 3.3 kwh).
My other "need" is a battery to allow me to use the remote start on my generator. I've already managed to "kill" three brand new AGM batteries. My hope is that SiO2 will recover from my abuse.
I'm finding your posts quite aggressive. Perhaps that's just me.
I apologize to the OP for this reply being off topic.
