Lithium Titanate
Hi All, I got a quote on Lithium Titanate "Max discharge rate is 10 C so 900 amps for 90 ah and 1200 amps for 120 ah The 120 will be 30% more expensive than the 90. Price for 90 ah is $150...
Forum Discussion
Solar with LFP and "faster charging" needs clarification or it is just more Kool-Aid to swallow. You do mostly 75-99s with solar rather than 50-90s as when off-grid and no solar.
The c Rate with solar is low with an off-grid sized bank and say 40 amps charging at noon and less the rest of the day, so the bank stays in Bulk to a high SOC (no tapering) so that removes the usual LFP advantage in the higher SOC range. Only way to speed things up would be a higher amp controller with more panel wattage making more charging amps.
However-- the big thing would be how solar with FLA too often leaves the batts not yet full by dark, so they sulphate over time. With LFP and SiO2 you can go for long periods without fully recharging them. IMO that would be worth something for a full-timer off grid. ( Not worth the money for a part-timer who can get home once in a while to "recover" the batteries using shore power)
PT, My SiO2 G27s are 60 lbs vs about 63 lbs for an ordinary AGM. I charge them at 14.6v regardless of temp under 77F so effectively at less than 14.6 this time of year.
If you have settled on SiO2 from Azimuth, perhaps get a quote now since they do have reduced prices for buying more at once, and they have a bunch now that are not flying off the shelf it looks like. If you don't like their quote, counter-offer. Who knows what prices will be this summer? Are they the only dealer Can/US? What if they go out of business? Worth a try IMO.
The c Rate with solar is low with an off-grid sized bank and say 40 amps charging at noon and less the rest of the day, so the bank stays in Bulk to a high SOC (no tapering) so that removes the usual LFP advantage in the higher SOC range. Only way to speed things up would be a higher amp controller with more panel wattage making more charging amps.
However-- the big thing would be how solar with FLA too often leaves the batts not yet full by dark, so they sulphate over time. With LFP and SiO2 you can go for long periods without fully recharging them. IMO that would be worth something for a full-timer off grid. ( Not worth the money for a part-timer who can get home once in a while to "recover" the batteries using shore power)
PT, My SiO2 G27s are 60 lbs vs about 63 lbs for an ordinary AGM. I charge them at 14.6v regardless of temp under 77F so effectively at less than 14.6 this time of year.
If you have settled on SiO2 from Azimuth, perhaps get a quote now since they do have reduced prices for buying more at once, and they have a bunch now that are not flying off the shelf it looks like. If you don't like their quote, counter-offer. Who knows what prices will be this summer? Are they the only dealer Can/US? What if they go out of business? Worth a try IMO.
