Ducati 821 Battery
2015–2018. The OEM battery case the 821 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2018 Ducati 821
- OEM battery
- YT12B-BSYuasa 2026 OEM guide
- Case family
- YT12B12V starter case
- Fits all years
- 2015–2018same case every year on file
The Ducati 821 takes the YT12B-BS case. The Antigravity AT12BS 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 AT12BS
821 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2015–2018Your year · 2018 | OEM batteryYT12B-BS12V starter case | Where it comes fromYuasa 2026 OEM guide | Lithium that fitsAntigravity AT12BS RE-START →Antigravity AT12BS-HD RE-START → |
2 trims covered: 821 Monster, Monster 821.
Shop all Ducati batteriesWhat the 821 needs, in plain English
Every 821 from the first 2015 model through 2018 starts on the YT12B-BS case, a 12-volt starter battery. Ducati 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 AT12BS 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.