SiO2 Battery -UPDATE 5 (Two Batts)

EDIT--I see the tech link now, so I will read that, thanks.

Thanks PT. What happens if you recharge with a 45 amp converter--over the 25 amps-- does the battery have an acceptance rate that just won't allow that and self-protects like a Wet or do you ruin it?

I had that trouble with my 100AH AGMs which said max of 27 and I beat that by using two with my 55 amper. Only way to do under 27 with one is use the portable charger at its 20 amp setting.

So on recharge you have to disconnect the converter, clamp on the portable at 20 amps, wait till amps taper so you know it will be safe to go to 45 amp converter? When do amps taper with this type of batt anyway--same as Wets and AGMs or more like Li--very far along in SOC?

What counts as full? With AGMs you need an ammeter to see when amps are down to 0.5/100AH. Do you need an AH counter and ammeter to manage these batts? If you don't have to get them full I suppose that doesn't matter except for the monthly. ( and that's when to reset the AH counter if you have one)

Do you have to float them? They give the spec floating voltage range at a temp. Do you have to use temp comp to be sure to stay in that voltage bracket?

( My scenario is one battery in the camper where I can't really get at it, no Trimetric monitor--just voltage, some solar sometimes, recharge at home--would like to just connect and use the converter (too many amps) in 3-stage automatic, and not even know the battery is there for months and months.---and usage is short times off grid where 100AH is plenty before going home and while away use the MW with the high draw every so often. --at least the SiO2 can do that part ok. )

I see voltages but no real stopping point to declare full charge.
Is there a amperage level that says it is done like an AGM just hits a wall.

BFL13,

If the 320 amp discharge rate can be trusted, a single SiO2 100 amp-hour should easily run a microwave, and for a decent time frame.

I've found the Azimuth company extremely responsive to questions, often replying on the same day.

The manufacturer is the Canadian company https://soneil.com/

Technical Brochure is:

https://soneil.com/wp-content/uploads/2018/07/12-EFSN-100.pdf

Hi BFL13,

This is what I've gleaned so far:

They can be discharged to stone bone dead 620 times without dying. After those 620 cycles, 80% of OEM capacity remains. They are about 1/2 the price of LI. They can be used and charged at -45 c to +65 c. (-49 f to 149 f)

At 50% discharge cycles are 2800 (80% of OEM left)

At 80% discharge cycles are 1500 (80% OEM left)

They can be draw on at a rate of 9C for 5 seconds.

They do not need to be recharged to 100%, but once a month a full charge is recommended.

From the seller:

“This battery has 1200 Watt Hours of storage.

You can access 100%, but it is recommended that you do not regularly discharge over 80% because it will shorten the lifespan of the battery.

At 80%, the usable capacity is 960 Watt Hours of storage. Max peak discharge is, (for the 100 amp-hour) is 900A (5s) at 25 degrees C.

Constant Amp discharge rate is 320A (about 5 minutes until the battery is fully discharged). For charging the rate is .25C (4 hour) charge rate (25A for 1 100Ah 12V battery).”

The only negative is weight. The "best buy" is currently the 100 amp-hour battery."

For USA pricing go here:

https://azimuthsolarproducts.com/product-category/batteries/sio2/