Victory Magnum Battery

2015–2017. The OEM battery case the Magnum takes and the lithium that drops into it, year by year. One case across the whole run.

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2017 Victory Magnum

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OEM battery: YTX20HL-BSOEM parts catalog
Case family: YTX20L12V starter case
Fits all years: 2015–2017same case every year

The Victory Magnum takes the YTX20HL-BS case. The Ionic S6 is a drop-in for that case: 720 cranking amps, 4.4 lb.

See the Ionic S6

Fits your bike

Starter

Ionic

Ionic Lithium S6 12V Motorcycle Battery 720CA (Bluetooth)

Also fits your bike · 2 more

StarterYTX20

Antigravity

Antigravity ATX20 12V Motorcycle Battery 680CA (w/ Re-Start)

Antigravity ATX20-HD 12V Motorcycle Battery 780CA (30Ah Heavy Duty)

12V·780CA·5.2 lb

$450

$600Save $150

Magnum battery by model year

Model years	OEM battery	Where it comes from	Lithium that fits
2015–2017Your year · 2017	OEM batteryYTX20HL-BS12V starter case	Where it comes fromOEM parts cataloga battery fitment list agrees	Lithium that fitsIonic S6 Antigravity ATX20 RE-START Antigravity ATX20-HD

2 trims covered: Magnum, V106 Magnum.

Shop all Victory batteries

What the Magnum needs

Every Magnum from the first 2015 model through 2017 starts on the YTX20HL-BS case, a 12-volt starter battery. Victory 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 Ionic S6: 720 cranking amps, 4.4 pounds, the same case in lithium. 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 Victory Magnum take?+

The YTX20HL-BS case, the same one on every Magnum from 2015 to 2017. The Ionic S6 is the lithium drop-in for it.

Will a lithium battery work in a Magnum 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.