The Motorcycle LFP Starter 8Ah is a 12.8-volt lithium starter battery rated 500 cold-cranking amps at 1.3 kilograms, in an IP65 case. It goes into big-bore motorcycles, ATVs and personal watercraft.
Rough Duty
Water, mud and vibration

An ATV battery lives through creek crossings, mud and pressure-washing. A personal watercraft battery lives in a wet hull with salt in the air. The sealed IP65 case keeps water out of the terminals and the electronics, and the cells sit clamped in a holder rather than hanging on plates. There is no acid to spill when the machine goes over.
The Current
500 amps for a big single
500 cold-cranking amps turn the high-compression singles and big twins on ATVs and 750 to 1200cc motorcycles, and the three-cylinder engines in a modern watercraft. Those engines ship with a YTX14 or YTX20-class lead battery, and the swap drops 3 to 3.5 kilograms off the machine.
Between Rides
Sitting all season
A quad or a watercraft sits unused for months at a stretch. This pack loses 2 to 3 percent of its charge a month on the shelf and takes no harm from being stored part-charged. A lead battery left the same way sulfates and turns up dead in the spring.
Charging Output
A stator is not an alternator
An ATV or watercraft stator puts out far less at idle than a car alternator, and a winch or a stereo draws from the battery whenever the engine is not revving. The 102 watt-hours give that gap a buffer. Across a long day of low-speed work, bring the engine up periodically to put charge back, the same practice a lead battery needs on these machines.
Data
Datasheet
| Model | ST12-8 |
|---|---|
| Nominal voltage | 12.8V |
| Capacity | 8Ah |
| Energy | 102Wh |
| Charge voltage | 14.6V |
| Cold cranking | 500A (CCA) |
| Cycle life | ≥2,000 cycles |
| Weight | ≈1.3 kg |
| Dimensions | 148 × 86 × 105 mm |
| Operating temperature | Discharge -10~60°C / Charge 0~45°C |
| Protection rating | IP65 |
| Certification | UN38.3 / CE / FCC |
Fit
Charging
Charge on the machine, or at 14.6 volts from a lithium charger between seasons. Rinse salt off the terminals after a watercraft outing and keep the vent path clear.







































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