Yamaha FX Battery
2009–2026. Yamaha changed the FX's battery once across the run. Pick your year and we show the case that year takes and the lithium that fits it. Change any box in the strip to look up another ski.
2026 Yamaha FX
- OEM battery
- YTX20L-BSYuasa 2026 OEM guide
- Case family
- YTX20L12V starter case
- Fits all years
- 2024–2026same case every year on file
The Yamaha FX 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
FX battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2009–2020 | OEM batteryYTX20HL-PW12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
| 2024–2026Your year · 2026 | OEM batteryYTX20L-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
2 trims covered: FX, FX, FZR, FZS, VXS, VXR.
Shop all Yamaha Jet Ski batteriesWhy the year matters on this one
The FX is a jet ski where the battery changed mid-run: 2009 to 2020 takes the YTX20HL-PW and 2024 to 2026 the YTX20L-BS. The plate above names the source for each year, and the table shows every run we have on file, so match the year to the case before you order.
For 2024 to 2026 that means 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.