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Yamaha XT225 Serow Battery

1992–2007. Yamaha changed the XT225 Serow'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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2007 Yamaha XT225 Serow

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OEM battery
YTX5L-BSYuasa 2026 OEM guide
Case family
YTZ712V starter case
Fits all years
1992–2007same case every year on file

The Yamaha XT225 Serow takes the YTX5L-BS 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
Fits your bike
150CA
Antigravity ATZ-7 12V Motorcycle Battery 150CA (w/ Re-Start)StarterYTZ7
Antigravity

Antigravity ATZ-7 12V Motorcycle Battery 150CA (w/ Re-Start)

12V·150CA·1.3 lb
RE-START
$145
$230Save $85
3-yr warranty · Ships in 3-5 days

XT225 Serow battery by model year

1992–2000OEM batteryYTX7L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATZ-7 RE-START →
2001–2007Your year · 2007OEM batteryYTX5L-BS12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATZ-7 RE-START →

Trim covered: XT225 Serow.

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Why the year matters on this one

The XT225 Serow is a motorcycle where the battery changed mid-run: 1992 to 2000 takes the YTX7L-BS and 2001 to 2007 the YTX5L-BS. The plate above names the source for each year, and the table shows every run we have on file, so match the year to the case before you order.

For 2001 to 2007 that means 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.

What size battery does a Yamaha XT225 Serow take?+
It depends on the year: 1992 to 2000 takes the YTX7L-BS and 2001 to 2007 the YTX5L-BS. For 2001 to 2007 that is the Antigravity ATZ-7 RE-START, the lithium drop-in for the YTX5L-BS case. The table above shows every run we have on file, so match your year to the case before you order.
Will a lithium battery work in an XT225 Serow 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.