Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.
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The Noco 120Ah Group 31 is a 12.8V lithium iron phosphate (LiFePO4) battery built for deep-cycle duty in RVs, boats, off-grid solar and trolling motors. It delivers roughly 120Ah of usable capacity, weighs far less than a comparable lead-acid Group 31, and holds a steady voltage as it discharges. LiFePO4 chemistry is the safer, longer-lived lithium type, so it competes with brands like Battle Born and Renogy on cycle life and built-in protection rather than on raw capacity. It suits owners replacing flooded or AGM house batteries who want more usable power and less weight.
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Lowest price we've seen: $1,080.12 on Nov 9 at TWIST. Tracked across 2 stores since Nov 9.
Owners generally report strong, steady power and easy installation in RV and marine setups, and many praise the weight saving over AGM. Complaints center on the need for a lithium-aware charger and on cold-weather charging limits.
