Grom Battery(51)

Most model years use a 12V powersport battery in the YTX4L‑BS size class, with lithium equivalents sized to the same footprint and terminal layout. Exact fit can vary by year and ABS option, so it’s best to confirm before buying.

• Match the size/form factor (YTX4L‑BS class or equivalent).
• Confirm terminal orientation and case dimensions against your current battery.
• Choose chemistry: sealed lead‑acid (AGM/GEL) or lightweight lithium.
• Review cold‑cranking ratings and any warranty details that meet your needs.

These steps can help you select a compatible replacement, but results may vary based on your bike’s condition and accessories.

For 2020 models, a common fit is a 12V battery in the YTX4L‑BS form factor, offered in sealed lead‑acid and lithium options. Because mid‑cycle changes and ABS packages can affect fitment, a quick check is helpful.

• Look for compatibility notes on the product page (often listing “2017–2020”).
• Verify polarity and case size match your existing battery tray.
• Pick a chemistry that suits your riding: AGM/GEL for familiarity or lithium for lighter weight.
• If you ride in cold weather, compare CCA specs and charging guidance.

When unsure, compare your current battery’s label and dimensions to reduce mismatch risk.

Many 2019 models use a 12V YTX4L‑BS class battery. You’ll typically see two styles available: sealed factory‑activated units and versions supplied with an acid pack for activation.

• Factory‑activated: Arrives sealed and pre‑charged; can be quicker to install.
• With acid pack: Requires filling and initial charging per instructions; handle acid carefully and use protective gear.
• Ensure the case size and terminal layout match your tray and cables.
• Consider lithium alternatives for lower weight and slower self‑discharge, noting charger compatibility.

Check the listing’s fitment section for model‑year coverage and confirm with your owner’s manual before purchasing.

Both can work; the better choice depends on your priorities.

• AGM/GEL (sealed lead‑acid): Familiar charging needs, broadly compatible with stock systems, and steady performance for daily use.
• Lithium: Much lighter, often delivers strong cranking for its size, and tends to hold a charge longer in storage. May require a compatible charger and can behave differently in cold weather.
• Fitment: Whichever you choose, match the YTX4L‑BS size class (or equivalent) and correct terminal orientation.

Review product specs and usage notes to align with your climate, accessories, and riding habits.

With weeks or months of downtime, a little care can help extend service life.

• Fully charge before storage and maintain with a low‑amp smart charger designed for small powersport batteries.
• Disconnect the negative cable to reduce parasitic drain if the bike won’t be ridden.
• Store in a cool, dry place; avoid extreme heat or deep cold when possible.
• Check charge monthly and top up if voltage drops.
• For lithium types, follow the manufacturer’s charging guidance and avoid high‑amp automotive chargers.
• Keep terminals clean and lightly protected against corrosion.

These practices can help, but actual lifespan varies with usage, climate, and battery type.