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Kawasaki Ninja 1100SX Battery

2025–2026. The OEM battery case the Ninja 1100SX takes and the lithium that drops into it, year by year. One case across the whole run.

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2026 Kawasaki Ninja 1100SX

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OEM battery
YT12A-BSFactory manual
Case family
YTZ1012V starter case
Fits all years
2025–2026same case every year

The Kawasaki Ninja 1100SX takes the YT12A-BS case. The Antigravity ATZ-10 RE-START is a drop-in for that case: 360 cranking amps, 2.6 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATZ-10

Ninja 1100SX battery by model year

2025–2026Your year · 2026OEM batteryYT12A-BS12V starter caseWhere it comes fromFactory manuala battery fitment list agreesLithium that fitsAntigravity ATZ-10 RE-START Antigravity ATZ-10-HD RE-START

4 trims covered: Ninja 1100SX, Ninja 1100SX (ABS), Ninja 1100SX SE, Ninja 1100SX SE (ABS).

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What the Ninja 1100SX needs

Every Ninja 1100SX from the first 2025 model through 2026 starts on the YT12A-BS case, a 12-volt starter battery. Kawasaki ships it with a lead-acid battery that starts to fade after two or three seasons of short rides and off-season storage, and that is usually the day a rider goes looking for something better.

The lithium drop-in is the Antigravity ATZ-10 RE-START: 360 cranking amps, 2.6 pounds, the same case in lithium. Its RE-START function puts the battery to sleep before a parasitic draw can drain it, then wakes it with one press for a jump start. Charge it with a lithium-compatible charger or maintainer for the off-season and it outlasts the lead-acid battery it replaces by years.

What size battery does a Kawasaki Ninja 1100SX take?+
The YT12A-BS case, the same one on every Ninja 1100SX from 2025 to 2026. The Antigravity ATZ-10 RE-START is the lithium drop-in for it.
Will a lithium battery work in a Ninja 1100SX without changes?+
Yes, on a bike with a healthy charging system: the lithium battery uses the same case, the same posts and the same cables, and it drops in where the lead-acid battery sat. Bikes older than about 2000 should have their voltage regulator and rectifier checked first, since a failing one overcharges any battery and lithium tolerates it less. Fill any gap in the tray with the foam spacers most lithium motorcycle batteries include.
Do I need a different charger for a lithium motorcycle battery?+
Use a charger or maintainer with a lithium (LiFePO4) mode. A lead-acid trickle charger can push the wrong voltage profile, and a desulfation mode can damage a lithium pack. A lithium-profile maintainer over the off-season keeps it topped without harm, and the battery loses only a few percent of charge a month sitting on its own.