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Message: <blockquote data-quote="gnappi" data-source="post: 464011" data-attributes="member: 22374">LifePo4 are going to break some new ground, but maybe not economically for a while. I've been watching the price and Amp hour ratings of the 38120 Lifepo cells, but so far to get the Ah of even a small 35Ah Deep cycle solar battery @ $56 each I'd have to get 16 38120's (4x 3.2V 8AH in series plus 12 more 4x3 in parallel to get 32Ah) at $300 (new) plus fabrication costs. Going for used cells will cut that by about half.I don't know if the charge profile is compatible with AGM or lead acid chargers yet, so that's another expense if needed. So far my three 35Ah batteries are three years old, and at $56 each they are now disposable. I can't say how long it will be till Lifepo4 can replace AGM batteries but it's not soon enough for some, but 20,000 cycles will be L-O-N-G past my lifetime when they are economically feasible <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>