TYKOOL LiFePO4 Motorcycle Battery YT7B-BS 12V 4Ah — 240 CCA, Drop-in Replacement with BMS

The TYKOOL YT7B-BS is a drop-in LiFePO4 motorcycle battery delivering 240 CCA, 12.8V and 4Ah in a compact, lightweight package for faster starts and longer service life.

This high-performance lithium replacement is designed to directly swap in for conventional 12V lead-acid motorcycle and ATV batteries (YT7B-BS and equivalents) while offering dramatic weight savings, quicker charging and built-in protection electronics. It ships fully charged and ready to install, eliminating acid handling and routine maintenance tied to wet batteries.

How does this battery improve starting and reliability?

With 240 cold cranking amps and a chemical design optimized for strong discharge, this LiFePO4 battery provides immediate, consistent starting power even after extended storage. The stable chemistry resists sulfation and maintains deliverable power longer than lead-acid options.

• 240 CCA for reliable engine starts in most motorcycle and light-ATV applications
• 3× the cranking power and up to 10× more starts versus comparable lead-acid cells
• Ships fully charged—ready to install without activation

What safety and durability features are built in?

An integrated Battery Management System (BMS) protects against overcharge, over-discharge, over-current and short circuits, while also managing temperature extremes. The LiFePO4 chemistry is inherently more stable than many lithium variants and requires no water or acid maintenance.

• Smart BMS for automatic protection and longer cycle life
• No sulfation, no watering, no acid handling required
• Rated for extended cycle life—up to five times the service life of comparable lead-acid batteries

Will this fit my motorcycle, ATV or scooter?

The TYKOOL YT7B-BS is built to the compact dimensions of common YT7B-BS replacements, making it compatible with a broad list of bikes, ATVs and scooters. Confirm polarity and space in your battery compartment before installing; dimensions and terminal orientation are provided for verification.

• Dimensions: 5.91" × 2.56" × 3.66" (L×W×H); weight about 1.98 lb
• Polarity: [+ -], Voltage: 12.8V, Capacity: 4 Ah
• Common fitments: Ducati 1198/1199/959 series, KTM-style models, BRP CAN-AM DS450, Yamaha TTR/TTR250 variants, and many scooters

How fast does it charge and maintain readiness?

TYKOOL's LiFePO4 chemistry supports rapid charge acceptance, allowing the battery to recharge far faster than typical lead-acid types. That means less downtime between rides and quicker recovery after accessory use or repeated starts.

• Up to 5× faster charging than typical lead-acid batteries
• Fast top-up capability—suitable with quality lithium-compatible chargers
• Maintains charge well during storage with minimal self-discharge

Who this battery is for: Riders and owners who want a lightweight, maintenance-free replacement that boosts starting power, shortens charge times, and extends service life. It’s especially suitable for sport and performance motorcycles, ATVs and scooters that require a compact 12V 4Ah unit with YT7B-BS form-factor compatibility. If you need a direct lithium upgrade without modifying mounts or wiring, this TYKOOL model offers a practical, plug-and-play option with built-in protection and reliable cold-cranking performance.