The Firefly battery with carbon foam plates is currently the best lead-acid technology for marine use because: it's an AGM (normal charge acceptance), it can operate in partial state of charge for weeks without sulfating (unique among lead-acid), and it self-heals—capacity diminishes during partial state operation but fully recovers with normal full charging.
factualpending
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Nigel CalderEvidence Quote
“the firefly battery with the carbon foam plates...you can operate it in a partial state of charge for weeks at a time and it doesn't sulfate...capacity diminish a little bit but when you get...a normal full charge again...it goes back to 100”
Created: 8/13/2026, 3:28:11 AM
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