Lithium Ion vs Lead Acid
Some interesting info. Lithium vs. Lead
Forum Discussion
Have posted elsewhere that we are quite pleased with our LFP suite: four batteries composed of 4 each 180 amp-hour 3.4V cells in series to provide 180 amp-hours at 54 V, or about 9600 W-hrs of which 7500 or more is usable at 80% DOD. This was $6K a year ago and I agree with MEXICOWANDERER that the costs should drop greatly as it becomes increasingly competitive. This has made us solar autonomous. My wife can use her heating pad (55 W) for several hours every evening. We spent six days in the Olympic rain forest three weeks ago and were only down 50% DOD.
Have been following LFP and solar on Solar Forums and no one suggests going to 100% DOD. Even there folks have LiCo and LFP confused.
mlts22 The system does have a converter to step down the 54V to 12 V.
Each of the four batteries (composed of four 3. 2 V cells) has its own individual BMS. These batteries are produced by Manzanita in Washington. They are designed for electric cars, motorcycles,and boats which require high discharge rates and are not optimal for the normally low discharge rates of an RV We generally use the microwave every day, and have run the 1.5 kW ac unit a number of times as a combination of 1.4 kW of solar and the batteries. We have tested the system running both a/c and mw and the 4.0 kW PSW inverter handled it well for 20 minutes. This was done with our son (the designer and fabricator) in attendance (it was his idea).
Reed
Have been following LFP and solar on Solar Forums and no one suggests going to 100% DOD. Even there folks have LiCo and LFP confused.
mlts22 The system does have a converter to step down the 54V to 12 V.
Each of the four batteries (composed of four 3. 2 V cells) has its own individual BMS. These batteries are produced by Manzanita in Washington. They are designed for electric cars, motorcycles,and boats which require high discharge rates and are not optimal for the normally low discharge rates of an RV We generally use the microwave every day, and have run the 1.5 kW ac unit a number of times as a combination of 1.4 kW of solar and the batteries. We have tested the system running both a/c and mw and the 4.0 kW PSW inverter handled it well for 20 minutes. This was done with our son (the designer and fabricator) in attendance (it was his idea).
Reed
