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Honda AquaTrax F/R-12 Battery

2002–2009. The OEM battery case the AquaTrax F/R-12 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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2009 Honda AquaTrax F/R-12

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OEM battery
YTX20L-BSYuasa 2026 OEM guide
Case family
YTX20L12V starter case
Fits all years
2002–2009same case every year on file

The Honda AquaTrax F/R-12 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

AquaTrax F/R-12 battery by model year

2002–2009Your year · 2009OEM batteryYTX20L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideLithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 →

Trim covered: AquaTrax F/R-12, F/R-12X.

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What the AquaTrax F/R-12 needs, in plain English

Every AquaTrax F/R-12 from the first 2002 model through 2009 starts on the YTX20L-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 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 Honda AquaTrax F/R-12 take?+
The YTX20L-BS case, the same one on every AquaTrax F/R-12 from 2002 to 2009. The Antigravity ATX20 RE-START is the lithium drop-in for it.
Will a lithium battery work in an AquaTrax F/R-12 without changes?+
Yes, on a ski 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 jet ski batteries include, and match the terminal layout of the battery you are replacing.
Do I need a different charger for a lithium jet ski 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.