TYKOOL LiFePO4 Motorcycle Battery LFP4L-BS-STD 140CCA 2.8Ah — Digital Readout, Drop-In YTX4L-BS Replacement

TYKOOL LFP4L-BS-STD is a lightweight LiFePO4 motorcycle battery that replaces YTX4L-BS and delivers 140 CCA with a built-in digital readout for reliable starts and easy monitoring.

This compact lithium battery is engineered as a direct drop-in for many small motorcycles, ATVs, and scooters that accept YTX4L-BS form-factor batteries. It combines a high cold-cranking capability with very low self-discharge and an internal battery management system (BMS). Rugged sealing, vibration-resistant hardware, and a user-facing voltage screen make it practical for daily riders and seasonal machines alike.

How does this battery improve starting and handling?

The higher cold-cranking amps (140 CCA) give stronger ignition power for small single-cylinder engines, improving start reliability in cool weather and after storage. At roughly 1.26 pounds, the lithium chemistry is substantially lighter than lead-acid, reducing unsprung weight and aiding nimble handling on lightweight bikes.

• 140 CCA for quicker cold starts.
• Approximately 70% lighter than comparable lead-acid YTX4L-BS units.
• Low self-discharge keeps charge after months of storage.
• Improved agility due to lower weight on small bikes.

Is this a direct replacement for my YTX4L-BS battery?

Yes — the LFP4L-BS-STD is sized and configured to be a drop-in alternative for YTX4L-BS, YT4L-BS, and GT4L-BS applications with polarity [- +]. Terminal layout and mounting dimensions match common small-bike trays, and vibration-proof bolts are included for secure installation.

• Dimensions: 4.45 x 2.76 x 3.35 inches — fits standard trays.
• Polarity: negative then positive ([- +]) to match originals.
• Includes vibration-proof terminal bolts for off-road use.
• Common fits: smaller dirt bikes, scooters, ATVs specified for YTX4L-BS family.

What onboard protection and monitoring does it offer?

An integrated BMS manages cell balance and guards against overcharge and deep discharge, helping preserve pack life. The front-facing LCD voltage readout gives a quick live status so you can check charge level before starting or storing the vehicle.

• Built-in BMS for cell balancing and safety.
• LCD digital readout shows real-time voltage.
• Protects against common lithium failure modes when used correctly.
• Use only compatible LiFePO4 chargers to avoid damaging the BMS.

Can I use this battery on ATVs and in wet conditions?

Yes — the housing is sealed to an IP66 rating, resisting heavy rain, mud, and wash-downs common to off-road riding. The battery’s robust construction and vibration-resistant mounting hardware make it suitable for trail and youth quad applications, provided the vehicle’s electrical system is compatible.

• IP66 sealed case for water and dust resistance.
• High vibration tolerance for rough-terrain use.
• Recommended for small ATVs like youth quads with proper regulators.
• Not suited for unregulated charging systems without upgrades.

Who is this for: The TYKOOL LFP4L-BS-STD suits riders and owners of small motorcycles, scooters, dirt bikes, and youth ATVs who want a lighter, more maintenance-free power source than lead-acid. It’s ideal for seasonal vehicles, hobbyists, and those who need reliable starts with the convenience of a digital voltage display. Ensure your vehicle has a compatible regulator (output <15.0V) and use a LiFePO4-specific charger; avoid TaoTao-style or unregulated systems unless upgraded to a full-wave regulator.