Kawasaki BN125 Battery
2001–2009. The OEM battery case the BN125 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2009 Kawasaki BN125
- OEM battery
- YB9-BYuasa 2026 OEM guide
- Case family
- YTZ712V starter case
- Fits all years
- 2001–2009same case every year on file
The Kawasaki BN125 takes the YB9-B case. The Antigravity ATZ-7 RE-START is a drop-in for that case: 150 cranking amps, 1.3 lb, a built-in jump start that saves enough charge to get you home.
See the Antigravity ATZ-7
BN125 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2001–2009Your year · 2009 | OEM batteryYB9-B12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATZ-7 RE-START → |
Trim covered: BN125 Eliminator.
Shop all Kawasaki batteriesWhat the BN125 needs, in plain English
Every BN125 from the first 2001 model through 2009 starts on the YB9-B 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 ATZ-7 RE-START: 150 cranking amps, 1.3 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.