Suzuki Boulevard S40 Battery
2005–2019. The OEM battery case the Boulevard S40 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2019 Suzuki Boulevard S40
- OEM battery
- YTX14AHL-BSYuasa 2026 OEM guide
- Case family
- YTX14AL12V starter case
- Fits all years
- 2011–2019same case every year on file
The Suzuki Boulevard S40 takes the YTX14AHL-BS case. The Antigravity ATX12-AH 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-AH
Boulevard S40 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2005–2009 | OEM batteryYTX14AHL-BS12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATX12-AH RE-START → |
| 2011–2019Your year · 2019 | OEM batteryYTX14AHL-BS12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATX12-AH RE-START → |
Trim covered: Boulevard S40 LS650.
Shop all Suzuki batteriesWhat the Boulevard S40 needs, in plain English
Every Boulevard S40 from the first 2005 model through 2019 starts on the YTX14AHL-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-AH 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.