TYKOOL LiFePO4 Motorcycle Battery YTX9-BS-PRO — 300 CCA, 5 Ah, Digital SOC & IP66 Sealing

The TYKOOL YTX9-BS-PRO is a high-performance LiFePO4 motorcycle battery offering 300 CCA, a digital state-of-charge readout, IP66 sealing and extreme weight savings for sportbikes, ATVs and generators.

Designed as a direct-fit upgrade for YTX9-BS and GTX9-BS battery trays, the TYKOOL YTX9-BS-PRO delivers more starting power and far greater cycle life than conventional lead-acid units. It pairs a compact 150 x 87 x 105 mm footprint with only 2.1 lb weight, a built-in battery management system (BMS) and a clear SOC percentage display to simplify charging decisions and avoid unexpected downtime. The PRO model targets riders and small-vehicle owners who demand reliable cranking current, rugged ingress protection for wet environments, and compatibility with modern motorcycle electronics.

Will this battery start high-compression sportbikes reliably?

Yes—the PRO version is engineered to produce a strong burst of current for high-revving engines and bikes with significant parasitic draw. The 300 CCA output and 5 Ah capacity provide a stable voltage profile during cranking, helping ignition coils and fuel pumps maintain performance when it matters most.

• 300 CCA starting power for quick, confident starts
• Stable discharge curve prevents voltage sag under load
• Optimized for performance bikes with advanced electronics
• Lightweight construction reduces unsprung mass for better handling

How does the digital SOC and BMS protect the battery?

The integrated digital SOC gives an exact percentage readout of remaining energy, so you can see charge state at a glance and plan charging before you’re stranded. The internal BMS manages cell balancing and defends against overcharge, over-discharge and over-current events to extend usable life.

• High-definition SOC display for precise charge info
• Military-grade BMS for over-voltage and current protection
• Cell balancing for consistent performance over 2,000+ cycles
• Reduces risk of deep-discharge damage from improper charging

Can I install this as a drop-in replacement and what about polarity?

Physically the TYKOOL YTX9-BS-PRO matches YTX9-BS and GTX9-BS dimensions and has Left Hand Positive [+ -] terminal orientation for straightforward swaps. At only 150 x 87 x 105 mm and 2.1 lb, it fits most bikes, ATVs, scooters and compatible generator models without frame modifications.

• Direct-fit replacement for YTX9-BS and GTX9-BS sizes
• Left Hand Positive terminal layout—confirm before installation
• Compact, ultra-light design simplifies mounting and handling

Is this battery suitable for wet or track conditions and what charging limits apply?

The PRO housing is rated IP66, protecting against dust ingress and high-pressure water jets—useful for rainy rides and high-pressure cleaning after track sessions. Charging compatibility requires a stable regulator output under 15.0 V; avoid older shunt-style regulators that can exceed safe limits and consider upgrading to a MOSFET regulator if needed.

• IP66-rated case resists dust and heavy wash-downs
• Not compatible with regulators that exceed 15.0 V peak
• Recommended charging float: around 14.4 V ±0.2 V
• Great for track days, commuter wet-weather use, and off-road exposure

Who is this for: Riders, racers and small-vehicle owners who want modern LiFePO4 advantages—high cranking power, an accurate SOC readout, rugged weather protection and major weight savings—will find the TYKOOL YTX9-BS-PRO an excellent upgrade. It’s ideal for sportbikes, naked bikes and performance-focused ATVs that use YTX9-BS form-factor batteries, as well as compatible scooters, riding mowers and generator applications where compact size, long cycle life and reliable starting are priorities. Confirm vehicle polarity and regulator compatibility before purchase to ensure safe, long-lasting operation.