Lithium Batteries
Just downsized from a Class A DP to a Class B+. I got the residential fridge in the new motorhome so power when off the grid is going to be more of an issue that it was before. I’ve been looking at ...
Forum Discussion
pnichols wrote:
Well ... reading this clip below from the Azimuth Solar Products Si02 webpage
https://azimuthsolarproducts.com/product/12v-108ah-ultra-long-life-battery/ under the "Additional Information" tab:
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Battery Type
SiO2 Composite Electrolyte Battery
Nominal Capacity (25°C/77°F)
108 Ah (1296 Wh) @ 20 Hour
Nominal Voltage
12V
Max Charge Current
27A
Max Charge Voltage
14.7V
Internal Resistance (25°C/77°F)
=< 6 m?
Max Discharge Current (25°C/77°F)
800A(5S)
Depth of Discharge
100% DOD
Operational Temperature
-40?C to 65?C (-40?F to 149?F)
Self Discharge
< 1.6% per Month
Life Cycle
3400 Cycles at 40% DOD; 1500 Cycles at 80% DOD; 620 Cycles at 100%
DOD
Dimensions
17.2 x 33 x 22 cm (6.77 x 13 x 8.66")
Weight
31.5 kg (69.4 lbs)
Manufacturer
Soneil International Ltd.
Warranty
2 Years Workmanship
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It sure looks to me like their SiO2 batteries function in a far, far superior way as compared to good old regular lead acid (liquid or AGM) batteries. Crystals are not the same as liquid or liquid absorbed into mats.
Note that the SiO2 batteries can even be discharged to "zero" about 620 times - which I would never think of doing even once, with any battery in my RV - no matter what the chemistry. (Excluding a capacitor battery of course!)
BTW, that maximum charge current of 27A is perfect for us folks with only 130 alternators when underway, and for us drycamping RV folks with only stock converters and very small portable generators.
The spec actually says discharged to 100% DOD (ie pull the full rated capacity out of the battery), not to zero (volts). As I pointed out this claim is not really substantially different from what deep cycle flooded battery manufacturers claim (see the graph I posted earlier with ~500 cycles to 100% DOD). I am not sure I believe either of these claims, just pointing out that the claims are about the same.
Also note that Gell Cells have a sulfuric acid electrolyte solidified with SiO2 (silica), the difference is that these appear to have more SiO2, but the concept is the same.
What spec do you think is far, far better?
