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Suzuki LT250EF Quad Runner Battery

1985–1986. The OEM battery case the LT250EF Quad Runner 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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1986 Suzuki LT250EF Quad Runner

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OEM battery
Y50-N18A-AYuasa 2026 OEM guide
Case family
Y50-N18A-A12V starter case
Fits all years
1985–1986same case every year on file

The Suzuki LT250EF Quad Runner takes the Y50-N18A-A case. The Ionic S6 is a drop-in for that case: 720 cranking amps, 4.4 lb.

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Fits your machine
720CA
Ionic Lithium S6 12V ATV Starter Battery (720CA)Starter
Ionic

Ionic Lithium S6 12V ATV Starter Battery (720CA)

12V·720CA·4.4 lb
$149
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5-yr warranty · Ships in 3-5 days

LT250EF Quad Runner battery by model year

1985–1986Your year · 1986OEM batteryY50-N18A-A12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsIonic S6 →

Trim covered: LT250EF Quad Runner.

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What the LT250EF Quad Runner needs, in plain English

Every LT250EF Quad Runner from the first 1985 model through 1986 starts on the Y50-N18A-A case, a 12-volt starter battery. Suzuki 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 S6: 720 cranking amps, 4.4 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 Suzuki LT250EF Quad Runner take?+
The Y50-N18A-A case, the same one on every LT250EF Quad Runner from 1985 to 1986. The Ionic S6 is the lithium drop-in for it.
Will a lithium battery work in an LT250EF Quad Runner 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.