The correct battery is a 12-volt sealed lead-acid motorcycle battery, commonly the YTX12-BS (or an equivalent size) that fits the Shadow 750’s battery tray.
For the 2009 Shadow 750, you’ll want a compact 12V battery with adequate cranking power. The bike’s VT750 variants use a standard 12V battery, and replacement options are typically labeled YTX12-BS or YTX14-BS. This article outlines how to choose the right size, verify fit, and what options are commonly available.
Common battery options
Lead-acid replacements are the most straightforward and widely available. Here are the standard choices that fit or closely fit the Shadow 750, along with notes on space and capacity.
Lead-acid replacements
- YTX12-BS: 12-volt sealed lead-acid battery, commonly used as a direct replacement with enough capacity and crank power for the Shadow 750.
- YTX14-BS: 12-volt sealed lead-acid battery with higher capacity; may require more space in the battery tray, but offers additional reserve power.
When replacing, verify your bike’s tray clearance and terminal orientation to ensure a proper fit.
Lithium options
Lightweight lithium-iron-phosphate (LiFePO4) packs are available, but they require attention to charging compatibility and fitment. They often have different physical envelopes and BMS requirements, so confirm that the dimensions and connectors match your bike’s wiring harness before buying.
- LiFePO4 12V packs can offer significant weight savings and longer cycle life, but check that your charger and voltage regulator are compatible, and that the battery fits the tray with adequate clearance.
For most Shadow 750 owners, a traditional lead-acid replacement (YTX12-BS or YTX14-BS) is the simplest and most reliable choice.
How to confirm fit and install
These steps help ensure the battery you choose will fit properly and perform reliably in all seasons.
- Measure the battery tray space (length, width, height) and compare to the new battery's dimensions.
- Check the terminal layout to ensure correct wiring orientation and avoid rerouting cables.
- Ensure the chosen battery has adequate CCA or capacity for cold starts; if in doubt, pick a model with higher capacity than the original.
- Charge the battery fully with the appropriate charger before installation.
- Reconnect the terminals snugly and protect against corrosion; test starting performance before closing up the bike.
By verifying fit and capacity, you’ll avoid common issues like difficult starts or battery movement in the tray.
Summary
The 2009 Honda Shadow 750 uses a 12-volt motorcycle battery. The most common replacement options are YTX12-BS and, if space permits, YTX14-BS. Lithium alternatives exist but require careful compatibility checks with the charging system and mounting. Always verify dimensions, terminal layout, and CCA or capacity against the OEM spec before purchasing, and ensure the battery is fully charged before first use. This approach keeps the bike starting reliably year-round.