The 2004 Honda Rancher uses a 12-volt, motorcycle-style battery, most commonly in group size U1 (also sold as U1-4) or YTX12-BS.
The exact size can vary by trim (TRX350FE, TRX350TM, etc.), so verify with the battery label or owner's manual. Replacement batteries are typically in the 8–12 Ah range with roughly 150–200 cold-cranking amps (CCA). Check fitment in the battery box and ensure the terminal layout matches your bike.
Common battery sizes for the 2004 Rancher
Two sizes are most commonly found on 2004 Ranchers. The following details help identify compatible replacements.
- Group U1 / U1-4: 12V, about 8–12 Ah, roughly 150–200 CCA; compact footprint designed for ATV trays.
- YTX12-BS: 12V, about 8–12 Ah, roughly 180–200 CCA; slightly larger in height but widely used in larger ATVs.
Note: Battery dimensions vary by model and brand. Always confirm the exact measurements and terminal orientation to ensure a proper fit.
How to confirm the exact size for your 2004 Rancher
To ensure you buy the right battery, follow these verification steps:
- Read the battery label or stamping on the existing unit to identify the group size (for example, U1 or YTX12-BS).
- Consult the owner's or service manual for the exact recommended battery group size and capacity.
- Measure the battery tray space (length, width, height) and compare with the replacement's dimensions and terminal placement.
If you cannot read the markings or your manual is unavailable, bring the bike’s model year and trim to a reputable parts dealer or use an online cross-reference tool to confirm the correct size.
Summary: For a 2004 Honda Rancher, plan for a 12-volt battery in common ATV group sizes such as U1 (U1-4) or YTX12-BS. Always verify the exact size through the battery label, manual, and tray measurements before purchasing.