Yamaha Grizzly 125 Battery

2004–2013. The OEM battery case the Grizzly 125 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.

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2013 Yamaha Grizzly 125

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OEM battery: YB12C-AYuasa 2026 OEM guide
Case family: YB12C-A12V starter case
This battery fits: 2009–2013other years take a different case

The Yamaha Grizzly 125 takes the YB12C-A case. The Ionic S4 is a drop-in for that case: 500 cranking amps, 3.3 lb.

Fits your machine

Ionic Lithium S4 12V ATV Starter Battery (500CA)

12V·500CA·3.3 lb

$89

$149Save $60

5-yr warranty · Ships in 3-5 days

Grizzly 125 battery by model year

Model years	OEM battery	Where it comes from	Lithium that fits
2004–2008	OEM batteryYB12C-A12V starter case	Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees	Lithium that fitsAntigravity ATZ-7 RE-START →Ionic S4 →
2009–2013Your year · 2013	OEM batteryYB12C-A12V starter case	Where it comes fromYuasa 2026 OEM guide	Lithium that fitsIonic S4 →

2 trims covered: Grizzly 125, Grizzly 125 Hunter.

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What the Grizzly 125 needs, in plain English

Every Grizzly 125 from the first 2004 model through 2013 starts on the YB12C-A case, a 12-volt starter battery. Yamaha 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 Yamaha Grizzly 125 take?+

The YB12C-A case, the same one on every Grizzly 125 from 2004 to 2013. The Ionic S4 is the lithium drop-in for it.

Will a lithium battery work in a Grizzly 125 without changes?+

Yes, on a machine 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. Check that the stator and regulator hold a steady charge, fill any gap in the tray with the foam spacers most lithium ATV batteries include, and match the terminal layout of the battery you are replacing.

Do I need a different charger for a lithium ATV 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.