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The Duracell Ultra 12V Deep Cycle Battery is a sealed lead-acid battery rated at 12 volts and about 21.4 amp-hours, built to deliver steady power over long discharges rather than short bursts. It suits trolling motors, RV and camper auxiliary circuits, electric scooters, fish finders, sump pumps and backup power, where a deep cycle is the right tool. Against flooded deep-cycle rivals it needs no water topping and can be mounted in more positions, but it gives up capacity and cycle life to larger group-size batteries and to lithium options. Owners value the maintenance-free sealed design and steady output; the common complaints are weight and shorter real-world runtime under heavy loads.
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Lowest price we've seen: $99.99 on Nov 10 at Batteries Plus. Tracked across 1 store since Nov 10.
Owners generally find it a dependable sealed deep-cycle battery for light marine, RV and backup duty. Praise centers on maintenance-free operation and steady output; criticism focuses on weight and runtime under heavy loads.
