jon_r is making all sorts of wild claims - sounds about like electrothingy.
LiFePO4 charging and protection circuit
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Since there is no sulfation to deal with, you do not need to charge to 100% all the time. Even if you wanted to, it is basically pointless as there is very very little power available in the steep charge knee. As soon as you place a load on it, you'll be at 90% or less nearly immediately anyway.
Pressing an agm charger into service that charges up to say 14.4v, and then falls back to 13.5v float when absorb is finished when a very low current point is reached is ok, as the 13.5v float does basically nothing for a lifepo4 at that point anyway. Ideally one should use a lifepo4-specific charger, but of course we can fake it with common charge controllers.
Note that I have not brought up any sort of bms considerations, as I only use my lifepo4's in the flat part of the knee, ie only from 20 to 80% DOD and no further. Typically less. So far so good. EV, RC and other mobile users may need a bms to eek out the very last drop of balanced capacity in order to get their vehicle home.Comment
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That will definitely help, and that feature has been slowly making its way into chargers for other lithium chemistries (like lithium-cobalt and lithium-manganese, both of which have even bigger problems with this.)Comment
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