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The Mighty Max YTZ10S is a sealed lead-acid battery in the YTZ10S size class, rated 12V, 8.6Ah and 190 cold cranking amps. It is a maintenance-free AGM-style replacement for powersports and small-engine applications that take the YTZ10S footprint, including many motorcycles, scooters, ATVs and riding mowers. Against premium OEM and lithium rivals it trades cranking reserve and weight for a lower-cost, drop-in fit; owners typically judge it on whether it holds charge through winter and starts reliably after sitting.
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Lowest price we've seen: $29.99 on Nov 9 at Lowe's. Tracked across 1 store since Nov 9.
Owners of powersports and small-engine equipment generally report the battery fits the YTZ10S tray and starts their machines, with satisfaction depending on how well it holds charge over time. Complaints center on batteries that arrive weak or fail within a season.
