Honda Fl 350R Battery

1985. The OEM battery case the Fl 350R 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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1985 Honda Fl 350R

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OEM battery: YTX12-BSYuasa 2026 OEM guide
Case family: YTX1212V starter case
Fits all years: 1985same case every year on file

The Honda Fl 350R takes the YTX12-BS case. The Antigravity ATX12 RE-START is a drop-in for that case: 360 cranking amps, 3 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATX12

Fits your machine

360CA

Starter

Antigravity

Antigravity ATX12 12V ATV Battery 360CA (w/ Re-Start)

3-yr warranty · Free Shipping

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480CA

StarterYTX12

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Antigravity ATX12-HD 12V ATV Battery 480CA (w/ Re-Start)

3-yr warranty · Free Shipping

500CA

Starter

Ionic

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

12V·500CA·3.3 lb

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5-yr warranty · Ships in 3-5 days

Fl 350R battery by model year

Model years	OEM battery	Where it comes from	Lithium that fits
1985Your year · 1985	OEM batteryYTX12-BS12V starter case	Where it comes fromYuasa 2026 OEM guide	Lithium that fitsAntigravity ATX12 RE-START →Antigravity ATX12-HD RE-START →Ionic S4 →

Trim covered: Fl 350R Odyssey.

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What the Fl 350R needs, in plain English

Every Fl 350R from the first 1985 model through 1985 starts on the YTX12-BS case, a 12-volt starter battery. Honda 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 ATX12 RE-START: 360 cranking amps, 3 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 Honda Fl 350R take?+

The YTX12-BS case, the same one on every Fl 350R from 1985 to 1985. The Antigravity ATX12 RE-START is the lithium drop-in for it.

Will a lithium battery work in a Fl 350R 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.