Kawasaki KLE500 Battery

2026. The OEM battery case the KLE500 takes and the lithium that drops into it, year by year. One case across the whole run.

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2026 Kawasaki KLE500

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OEM battery: YTZ10SFactory manual
Case family: YTZ10S12V starter case
Fits all years: 2026same case every year

The Kawasaki KLE500 takes the YTZ10S case. The Ionic S4 is a drop-in for that case: 500 cranking amps, 3.3 lb.

See the Ionic S4

Fits your bike

Starter

Ionic

Ionic Lithium S4 12V Motorcycle Battery 500CA (Bluetooth)

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StarterYTZ10

Antigravity

Antigravity ATZ-10 12V Dirt Bike Battery 360CA (w/ Re-Start)

Antigravity ATZ-10-HD 12V Motorcycle Battery 525CA (w/ Re-Start)

KLE500 battery by model year

Model years	OEM battery	Where it comes from	Lithium that fits
2026Your year · 2026	OEM batteryYTZ10S12V starter case	Where it comes fromFactory manuala battery fitment list agrees	Lithium that fitsIonic S4 Antigravity ATZ-10 RE-START Antigravity ATZ-10-HD RE-START

4 trims covered: KLE500, KLE500 ABS, KLE500 SE, KLE500 SE ABS.

Shop all Kawasaki Dirt Bike batteries

What the KLE500 needs

The 2026 KLE500 starts on the YTZ10S 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 Ionic S4: 500 cranking amps, 3.3 pounds, the same case in lithium. 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 KLE500 take?+

The YTZ10S case, the one the 2026 KLE500 takes. The Ionic S4 is the lithium drop-in for it.

Will a lithium battery work in a KLE500 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 dirt bike batteries include.

Do I need a different charger for a lithium dirt bike 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.