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Honda NX650 Battery

1988–1989. The OEM battery case the NX650 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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1989 Honda NX650

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OEM battery
YTX9-BSYuasa 2026 OEM guide
Case family
YTZ1012V starter case
Fits all years
1988–1989same case every year on file

The Honda NX650 takes the YTX9-BS case. The Antigravity ATZ-10 RE-START is a drop-in for that case: 360 cranking amps, 2.6 lb, a built-in jump start that saves enough charge to get you home.

See the Antigravity ATZ-10

NX650 battery by model year

1988–1989Your year · 1989OEM batteryYTX9-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATZ-10 RE-START →Antigravity ATZ-10-HD RE-START →Ionic S4 →

Trim covered: NX650.

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What the NX650 needs, in plain English

Every NX650 from the first 1988 model through 1989 starts on the YTX9-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 ATZ-10 RE-START: 360 cranking amps, 2.6 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 NX650 take?+
The YTX9-BS case, the same one on every NX650 from 1988 to 1989. The Antigravity ATZ-10 RE-START is the lithium drop-in for it.
Will a lithium battery work in an NX650 without changes?+
Yes, on a bike 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. Bikes older than about 2000 should have their voltage regulator and rectifier checked first, since a failing one overcharges any battery and lithium tolerates it less. Fill any gap in the tray with the foam spacers most lithium motorcycle batteries include.
Do I need a different charger for a lithium motorcycle 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.