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Suzuki M109R Boulevard Battery

2006–2014. Suzuki changed the M109R Boulevard's battery once across the run. Pick your year and we show the case that year takes and the lithium that fits it. Change any box in the strip to look up another bike.

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Model
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2014 Suzuki M109R Boulevard

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OEM battery
YTX20CH-BSYuasa 2026 OEM guide
Case family
YTX20C12V starter case
Fits all years
2011–2014same case every year

The Suzuki M109R Boulevard takes the YTX20CH-BS case. The Ionic S4 is a drop-in for that case: 500 cranking amps, 3.3 lb. Some trims of this model take a different battery; check the code on yours.

See the Ionic S4

M109R Boulevard battery by model year

2006OEM batteryYTX12-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsIonic S4 Antigravity ATX12-HD RE-START
2007–2009OEM batteryYTX20CH-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsIonic S4 Antigravity ATX12-HD RE-START Some trims of this model take a different battery; check the code on yours.
2011–2014Your year · 2014OEM batteryYTX20CH-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsIonic S4 Antigravity ATX12-HD RE-START Some trims of this model take a different battery; check the code on yours.

2 trims covered: Boulevard M109R Limited VZR1800Z, Boulevard M109R VZR1800.

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Why the year matters on this one

The M109R Boulevard is a motorcycle where the battery changed mid-run: 2006 takes the YTX12-BS and 2007 to 2014 the YTX20CH-BS. The plate above names the source for each year, and the table shows each run, so match the year to the case before you order.

For 2007 to 2014 that means the Ionic S4: 500 cranking amps, 3.3 pounds, the same case in lithium. Some trims of this model take a different battery; check the code on yours. 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 Suzuki M109R Boulevard take?+
It depends on the year: 2006 takes the YTX12-BS and 2007 to 2014 the YTX20CH-BS. For 2007 to 2014 that is the Ionic S4, the lithium drop-in for the YTX20CH-BS case. The table above shows each run, so match your year to the case before you order.
Will a lithium battery work in an M109R Boulevard 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.