SpaceEVDriver
Well-Known Member
- Joined
- Aug 26, 2021
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- 59
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- Location
- Arizona
- Vehicles
- Ground-based: CA Route 1 AWD, ER
- Occupation
- Planetary Science
- Thread starter
- #16
Oh, absolutely we're well aware that AGM = 50% of rated, at best. We had to compromise somewhere. The LiFePO4 that were available through our contractor/vendor just weren't affordable, not even 10 kWh of capacity was affordable at this time. We opted to go with the higher cost permanently installed options (panels, inverter, etc) and lower cost batteries. The inverter and battery charger is capable of handling both AGM and LiFePO4, so in a few years we'll likely replace the AGM batteries.This sounds fantastic; congrats!
Just wanted to chime in and say that your 20kWh of AGM is really 10kWh at best, since you can't/should drain it below 30-40% (even for deep cycle ones), and the internal resistance of AGM means you can't really pull a lot of power because the voltage will sag too much. I know LiFePo4 sounds really expensive right now, but I think you'll be happier with a smaller LiFePo4 bank now than a "large" AGM one.
But, everyone's needs are different, and I'm sure you'll be very happy with your setup either way
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