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Honda Trx 450ER Battery

2006–2013. The OEM battery case the Trx 450ER 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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2013 Honda Trx 450ER

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OEM battery
YTZ7SYuasa 2026 OEM guide
Case family
YTZ712V starter case
Fits all years
2012–2013same case every year on file

The Honda Trx 450ER takes the YTZ7S 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

Trx 450ER battery by model year

2006–2009OEM batteryYTZ7S12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATZ-7 RE-START →
2012–2013Your year · 2013OEM batteryYTZ7S12V starter caseWhere it comes fromYuasa 2026 OEM guideAntigravity fitment list agreesLithium that fitsAntigravity ATZ-7 RE-START →

Trim covered: Trx 450ER.

Shop all Honda ATV batteries

What the Trx 450ER needs, in plain English

Every Trx 450ER from the first 2006 model through 2013 starts on the YTZ7S case, a 12-volt starter battery. Honda 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.

What size battery does a Honda Trx 450ER take?+
The YTZ7S case, the same one on every Trx 450ER from 2006 to 2013. The Antigravity ATZ-7 RE-START is the lithium drop-in for it.
Will a lithium battery work in a Trx 450ER without changes?+
Yes, on a machine 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. Check that the stator and regulator hold a steady charge, fill any gap in the tray with the foam spacers most lithium ATV batteries include, and match the terminal layout of the battery you are replacing.
Do I need a different charger for a lithium ATV 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.