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Yamaha 250 Moto-4 Battery

1989–1990. The OEM battery case the 250 Moto-4 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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1990 Yamaha 250 Moto-4

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OEM battery
YTX14AH-BSYuasa 2026 OEM guide
Case family
YTX14A12V starter case
Fits all years
1989–1990same case every year on file

The Yamaha 250 Moto-4 takes the YTX14AH-BS case. The Antigravity ATX12-AH 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-AH

250 Moto-4 battery by model year

1989–1990Your year · 1990OEM batteryYTX14AH-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATX12-AH RE-START →

Trim covered: 250 Moto-4 2x4.

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What the 250 Moto-4 needs, in plain English

Every 250 Moto-4 from the first 1989 model through 1990 starts on the YTX14AH-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 ATX12-AH 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 Yamaha 250 Moto-4 take?+
The YTX14AH-BS case, the same one on every 250 Moto-4 from 1989 to 1990. The Antigravity ATX12-AH RE-START is the lithium drop-in for it.
Will a lithium battery work in a 250 Moto-4 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.