Can-Am Defender HD8 Battery
2016–2021. The OEM battery case the Defender HD8 takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
2021 Can-Am Defender HD8
- OEM battery
- YTX20LYuasa 2026 OEM guide
- Case family
- YTX20L12V starter case
- Fits all years
- 2016–2021same case every year on file
The Can-Am Defender HD8 takes the YTX20L case. The Antigravity ATX20 RE-START is a drop-in for that case: 680 cranking amps, 4 lb, a built-in jump start that saves enough charge to get you home. Some trims of this model take a different battery; check the code on yours.
See the Antigravity ATX20
Defender HD8 battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 2016–2021Your year · 2021 | OEM batteryYTX20L12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATX20 RE-START →Antigravity ATX20-HD →Ionic S6 →Some trims of this model take a different battery; check the code on yours. |
13 trims covered: Defender DPS Cab HD8, Defender HD8, Defender HD8 DPS, Defender HD8 Max, Defender HD8 Max DPS, Defender HD8 Max XT, Defender HD8 XT, Defender MAX HD8, Defender MAX HD8 DPS, Defender MAX HD8 XT and 3 more.
Shop all Can-Am UTV batteriesWhat the Defender HD8 needs, in plain English
Every Defender HD8 from the first 2016 model through 2021 starts on the YTX20L case, a 12-volt starter battery. Can-Am 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 ATX20 RE-START: 680 cranking amps, 4 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. 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.