Yamaha XS1100S Battery
1979–1981. The OEM battery case the XS1100S takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
1981 Yamaha XS1100S
- OEM battery
- YTX24HL-BSYuasa 2026 OEM guide
- Case family
- YTX24L12V starter case
- Fits all years
- 1979–1981same case every year on file
The Yamaha XS1100S takes the YTX24HL-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
XS1100S battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 1979–1981Your year · 1981 | OEM batteryYTX24HL-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 → |
Trim covered: XS1100S Special.
Shop all Yamaha batteriesWhat the XS1100S needs, in plain English
Every XS1100S from the first 1979 model through 1981 starts on the YTX24HL-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 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.