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Ducati S2R Dark Battery

2005–2008. The OEM battery case the S2R Dark takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.

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2008 Ducati S2R Dark

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OEM battery
YT12B-BSYuasa 2026 OEM guide
Case family
YT12B12V starter case
Fits all years
2005–2008same case every year on file

The Ducati S2R Dark 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

S2R Dark battery by model year

2005–2008Your year · 2008OEM batteryYT12B-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity AT12BS RE-START →Antigravity AT12BS-HD RE-START →

Trim covered: Monster S2R Dark.

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What the S2R Dark needs, in plain English

Every S2R Dark from the first 2005 model through 2008 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.

What size battery does a Ducati S2R Dark take?+
The YT12B-BS case, the same one on every S2R Dark from 2005 to 2008. The Antigravity AT12BS RE-START is the lithium drop-in for it.
Will a lithium battery work in an S2R Dark without changes?+
Yes, on a bike with a healthy charging system: the lithium battery uses the same case, the same posts and the same cables, and it drops in where the lead-acid battery sat. Bikes older than about 2000 should have their voltage regulator and rectifier checked first, since a failing one overcharges any battery and lithium tolerates it less. Fill any gap in the tray with the foam spacers most lithium motorcycle batteries include.
Do I need a different charger for a lithium motorcycle battery?+
Use a charger or maintainer with a lithium (LiFePO4) mode. A lead-acid trickle charger can push the wrong voltage profile, and a desulfation mode can damage a lithium pack. A lithium-profile maintainer over the off-season keeps it topped without harm, and the battery loses only a few percent of charge a month sitting on its own.