Suzuki Boulevard S50 Battery
2005–2009. The OEM battery case the Boulevard S50 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2009 Suzuki Boulevard S50
- OEM battery
- YTX12-BSYuasa 2026 OEM guide
- Case family
- YTX1212V starter case
- Fits all years
- 2005–2009same case every year on file
The Suzuki Boulevard S50 takes the YTX12-BS case. The Antigravity ATX12 RE-START is a drop-in for that case: 360 cranking amps, 3 lb, a built-in jump start that saves enough charge to get you home.
See the Antigravity ATX12
Boulevard S50 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2005–2009Your year · 2009 | OEM batteryYTX12-BS12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATX12 RE-START →Antigravity ATX12-HD RE-START →Ionic S4 → |
Trim covered: Boulevard S50 VS800.
Shop all Suzuki batteriesWhat the Boulevard S50 needs, in plain English
Every Boulevard S50 from the first 2005 model through 2009 starts on the YTX12-BS case, a 12-volt starter battery. Suzuki 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 ATX12 RE-START: 360 cranking amps, 3 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.