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OUPES G5 Extra Battery 4,608 Wh of LiFePO4, 80 lb, for the Guardian 6000 V2.
$1,190 at OUPES ($1,400 ), checked Oct 14, 2026 : $0.26 for each watt-hour it adds . With the 8 OUPES allows, the Guardian 6000 V2 holds 41,472 Wh in all.
Each watt-hour it adds costs less than the Guardian 6000 V2's own ($0.59 on the Guardian 6000 V2 ), so it is the cheaper way to more stored energy than a second station, which adds outlets and output instead.
From OUPES's published figures and our own arithmetic; we have not tested it ourselves.
Which stations take it The most one station takes is OUPES's figure; a dash where its page gives none. Prices are both makers' prices added up, before cables.
OUPES G5 Extra Battery on each station Station Most per station With one With the most Station and one battery OUPES Guardian 6000 V2 4,608 Wh on its own 8 9,216 Wh 41,472 Wh $3,889
Specs OUPES G5 Extra Battery: OUPES's figures Capacity 4,608 Wh Cells LiFePO4 Weight 80 lb (36.3 kg) Cable, in the maker's words "Extra Battery Cable"
Where these figures come from OUPES product page : "4,608Wh Capacity" · "80.02 lbs (36.3 kg)" · "EV-grade LiFePO4 Battery"On the Guardian 6000 V2: OUPES's page , "With 8 x G5 batteries (41.4 kWh)" Price and stock: OUPES's US store, checked Oct 14, 2026 . Next steps Your shortlist
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Differences only Same AC load (W)
Runtime is rated capacity × 0.85 ÷ watts. Check startup draw and connections separately. Prices are the maker's, with the day they were checked. Open this comparison as a page you can share
Pick a model in each box above.
