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Honda Trx 300P Battery

1988–2000. The OEM battery case the Trx 300P 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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2000 Honda Trx 300P

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OEM battery
YTX14-BSYuasa 2026 OEM guide
Case family
YTX1412V starter case
Fits all years
1988–2000same case every year on file

The Honda Trx 300P takes the YTX14-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

Trx 300P battery by model year

1988–2000Your year · 2000OEM batteryYTX14-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATX12 RE-START →Antigravity ATX12-HD RE-START →Ionic S4 →

Trim covered: Trx 300P Fourtrax.

Shop all Honda ATV batteries

What the Trx 300P needs, in plain English

Every Trx 300P from the first 1988 model through 2000 starts on the YTX14-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 Trx 300P take?+
The YTX14-BS case, the same one on every Trx 300P from 1988 to 2000. The Antigravity ATX12 RE-START is the lithium drop-in for it.
Will a lithium battery work in a Trx 300P 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.