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Yamaha Kodiak 450 Battery

2003–2026. The OEM battery case the Kodiak 450 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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2026 Yamaha Kodiak 450

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OEM battery
YTX20L-BSYuasa 2026 OEM guide
Case family
YTX20L12V starter case
Fits all years
2018–2026same case every year on file

The Yamaha Kodiak 450 takes the YTX20L-BS case. The Antigravity ATX20 RE-START is a drop-in for that case: 680 cranking amps, 4 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATX20

Kodiak 450 battery by model year

2003–2006OEM batteryYTX20L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 →
2018–2026Your year · 2026OEM batteryYTX20L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 →

8 trims covered: KODIAK 450 4x4 Auto, Kodiak 450, Kodiak 450 4X4 EPS, Kodiak 450 4x4 EPS SE, Kodiak 450 EPS, Kodiak 450 EPS Hunter, Kodiak 450 EPS SE, Kodiak 450 Hunter.

Shop all Yamaha ATV batteries

What the Kodiak 450 needs, in plain English

Every Kodiak 450 from the first 2003 model through 2026 starts on the YTX20L-BS 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 Antigravity ATX20 RE-START: 680 cranking amps, 4 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 Yamaha Kodiak 450 take?+
The YTX20L-BS case, the same one on every Kodiak 450 from 2003 to 2026. The Antigravity ATX20 RE-START is the lithium drop-in for it.
Will a lithium battery work in a Kodiak 450 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.