The Honda CRF250F uses a 12-volt sealed lead-acid battery, typically around 4–5 Ah. Common replacement options include YTX4L-BS or YTX5L-BS, depending on year and market.
Battery type and specifications
A look at the CRF250F's electrical system shows it requires a compact, maintenance-free 12-volt battery (sealed lead-acid). The typical capacity is in the 4–5 amp-hour range, which suits the bike's lighting, ignition, and charging requirements.
Common replacement part numbers you’ll see from OEM and aftermarket suppliers include:
- YTX4L-BS — 12V, roughly 4 Ah, a common fit for many mid-size motorcycles including some CRF250F setups.
- YTX5L-BS — 12V, roughly 5 Ah, used on models that require a bit more reserve or have longer electronic accessory runs.
Note: Availability and exact fit can vary by year and market, so always verify with Honda’s parts diagram or your manual.
How to choose the right battery
To ensure you select the correct replacement for your CRF250F, follow these guidelines.
- Consult the owner’s manual or Honda’s official parts catalog to confirm the exact battery model number used on your bike’s year and market.
- Check the physical dimensions and terminal arrangement to ensure a proper fit in the battery tray and ease of cable routing.
- Choose a 12-volt SLA (sealed lead-acid) battery for standard use; consider an AGM option if you ride in very rough terrain or temperature extremes.
- Match or exceed the OEM cold-cranking amps (CCA) and reserve capacity to avoid starting issues in cold weather or with electrical accessories.
- When in doubt, opt for reputable brands such as Yuasa, GS, or equivalent that list compatibility with Honda CRF250F models.
Taking these steps helps avoid fitment problems and ensures reliable starting and electrical performance.
Maintenance and installation tips
Proper handling and installation can extend battery life and maintain performance.
- Disconnect the negative (ground) cable first when removing the old battery, then the positive cable.
- Clean the terminals and ensure the tray is dry and free of corrosion before installing the new battery.
- Charge the new battery according to the manufacturer’s instructions before first use.
- Keep the battery secured to dampen vibrations, and store in a cool, dry place if the bike will be unused for extended periods.
Following best practices reduces the risk of early failure and ensures reliable starts.
Summary
The Honda CRF250F uses a compact 12-volt sealed lead-acid battery, typically in the 4–5 Ah range. Common replacements include YTX4L-BS and YTX5L-BS. Always verify the exact part number and dimensions against your bike’s manual or Honda’s parts diagram, and choose a battery type (SLA vs AGM) that suits your riding conditions.