I corrected my previous post. It would only be an extra $10/month, not $20, so even better.
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Let's face it, most boondockers do not have a generator large enough to run a 200 or 300 amp charger. But do they really need such a beast? My eu2000i can handle a PFC 75a charger. With LiFePo, at near 100% charging efficiency, I would be able to replace my usual two day usage of ~65Ah's (15% of 430Ah) in under an hour. On my 430Ah bank of four GC-2's, that takes closer to 4 hours of gen run time. And yes, I could operate in the 70-85% SOC range, and replace those 65Ah's in an hour, but once a week I would still have to top up my bank, and that would take at least another 3-4 hours. Plus the deeper cycles would decrease life expectancy enormously.
If comparing LiFePo to AGM, in either case, it's likely no-one will be charging at a rate of 2C-3C. 60-100 amps of charge current is still plenty for a moderately sized bank. And I imagine there would be less wasted power when low C-rate solar charging, as well.
I do, however, share Mex's concern regarding all the technology/gadgetry required to safely charge Li batteries. I felt the same when I bought my '98 Explorer Limited. That was a big jump from an '86 Chevy Blazer. But Li has been around for a little while, and is used by NASA for their satellites, and in the Ev industry, so that is where the research and development is taking us.
