Yamaha YFM100 Champ Battery
1987–1991. The OEM battery case the YFM100 Champ takes, the lithium that drops into it, and every model year we have on file. One case across the whole run.
1991 Yamaha YFM100 Champ
- OEM battery
- 12N7-3BYuasa 2026 OEM guide
- Case family
- YTZ712V starter case
- Fits all years
- 1987–1991same case every year on file
The Yamaha YFM100 Champ takes the 12N7-3B 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
YFM100 Champ battery by model year
| Model years | OEM battery | Where it comes from | Lithium that fits |
|---|---|---|---|
| 1987–1991Your year · 1991 | OEM battery12N7-3B12V starter case | Where it comes fromYuasa 2026 OEM guideAntigravity fitment list agrees | Lithium that fitsAntigravity ATZ-7 RE-START → |
Trim covered: YFM100 Champ.
Shop all Yamaha ATV batteriesWhat the YFM100 Champ needs, in plain English
Every YFM100 Champ from the first 1987 model through 1991 starts on the 12N7-3B case, a 12-volt starter battery. Yamaha 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.