Kawasaki JS800 SX-R Battery
2003–2013. The OEM battery case the JS800 SX-R takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2013 Kawasaki JS800 SX-R
- OEM battery
- YTX20L-BSYuasa 2026 OEM guide
- Case family
- YTX20L12V starter case
- Fits all years
- 2003–2013same case every year on file
The Kawasaki JS800 SX-R 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
JS800 SX-R battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2003–2013Your year · 2013 | OEM batteryYTX20L-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
Trim covered: JS800 SX-R.
Shop all Kawasaki Jet Ski batteriesWhat the JS800 SX-R needs, in plain English
Every JS800 SX-R from the first 2003 model through 2013 starts on the YTX20L-BS case, a 12-volt starter battery. Kawasaki 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.