โFeb-02-2021 11:45 AM
โFeb-03-2021 03:05 PM
โFeb-03-2021 03:01 PM
pianotuna wrote:
Steve,
The 100 amp-hour SiO2 can do 240 amps continuous--but that would drain it pretty darn fast.
I believe the 2500 amps would only be useful with say starting a motor. I can't imagine how a house bank could ever have that high a surge.
โFeb-03-2021 02:55 PM
Itinerant1 wrote:
Do you mean LiFePo4 or LFP?
โFeb-03-2021 08:23 AM
BFL13 wrote:
It was amps for a short burst, not AH. See "C-Rates"
Discharges go with temperature too-see the graphs, and something mysterious about "ratios". Also end voltages.
Don't know a scenario where an RVer would care about all that, although I got close when I wanted one 100AH batt to run the MW, but didn't care about longer term AH capacity. Had to get a second battery to get more AH. That also reduced the discharge proportion.
-----------
Drat! Isn't LFP short for LiFePo4 ?
โFeb-03-2021 08:02 AM
theoldwizard1 wrote:
200 Ah and 280 Ah prismatic cells have been available direct from China for almost 1 year.
Anyone advertising Ah for a short period is trying to SCAM you !
โFeb-03-2021 07:40 AM
โFeb-03-2021 07:38 AM
โFeb-03-2021 07:05 AM
โFeb-03-2021 07:04 AM
StirCrazy wrote:pianotuna wrote:
270Ah 12V Silicon Dioxide Battery 8D Marine & Off-grid $1,237.00
70 kg (154.5 lbs)
Max Discharge Current (25ยฐC/77ยฐF) 2500A
Max Charge Current 65A
Max Charge Voltage 14.7V
Dimensions 26.9 x 52 x 23.1 cm (10.59 x 20.47 x 9.09")
That is in US dollars:
https://www.azimuthsolarproducts.com/product/12v-270ah-sio2-battery/
you sure thats 2500 A for a discharge current?
just looked it up, thats for 5 seconds, whats the max continuious discharge they dont seam to mention that.
here is a comparason for peoples info if they want to build LiPhO4
cells off ailibaba 280AH for 561.61 CDN plus you would need to spend about 100 bucks on a BMS and 30 bucks on stuff to make a case.
weight, 48.5lbs
Max continuious discharge current 280A
Max Charge current 280A
Mac charge voltage 14.6
Charge temp range -5C to 60C
Discharge temp -30C to 60C
size 6.8" x 7.8" x 11.2"
Steve
โFeb-03-2021 06:42 AM
time2roll wrote:theoldwizard1 wrote:
Anyone advertising Ah for a short period is trying to SCAM you !
Where do you see this?
โFeb-03-2021 06:32 AM
theoldwizard1 wrote:
Anyone advertising Ah for a short period is trying to SCAM you !
โFeb-03-2021 06:31 AM
pianotuna wrote:
270Ah 12V Silicon Dioxide Battery 8D Marine & Off-grid $1,237.00
70 kg (154.5 lbs)
Max Discharge Current (25ยฐC/77ยฐF) 2500A
Max Charge Current 65A
Max Charge Voltage 14.7V
Dimensions 26.9 x 52 x 23.1 cm (10.59 x 20.47 x 9.09")
That is in US dollars:
https://www.azimuthsolarproducts.com/product/12v-270ah-sio2-battery/
โFeb-03-2021 06:20 AM
theoldwizard1 wrote:
200 Ah and 280 Ah prismatic cells have been available direct from China for almost 1 year.
Anyone advertising Ah for a short period is trying to SCAM you !
โFeb-03-2021 05:36 AM