#1
★ Top Pick
YTX12-BS Battery Replacement (10Ah, 12v, Sealed) Factory Activated, Maintenance Free Battery Compatible with - 2006 Kawasaki Ninja 650R, 2007 Kawasaki Ninja 650R, 2009 Kawasaki Ninja 650R
This YTX12-BS matches the Ninja 650's OEM battery spec exactly — 12V, 10Ah, the correct group size to drop straight into the battery compartment without modifications. It arrives factory-activated and sealed, so there's no acid-filling before installation, which makes swapping it out a straightforward 10-minute job. Honest caveat: it's a budget-tier AGM unit, so longevity may fall short of premium brands like Yuasa if the bike sits unused for extended periods.
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