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Precision Battery  |  SKU: BW-17998

Precision HJT9B-FP Lithium-Ion Compatible Replacement Battery for SigmasTek ST9B-4, 12V 1.1 lb

18% off
Sale price $160.99 USD Regular price $195.99
Shipping calculated at checkout.
Up to 65% lighter and more compact than traditional lead-acid batteries
Fast recharge time of just 6 minutes with high current capability
Long-lasting performance with over 2000 charge cycles compared to 350 for lead-acid
Leak-proof design mounts in any orientation, no acid or spills
Built-in easy-to-read capacity indicator for convenient battery status monitoring
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 8 AH

Terminal Type

Nut & Bolt

Precision HJT9B-FP Lithium Ion Battery — Replacement For ST9B-4 / Multiple Models (12V)

Replace legacy lead-acid batteries with the Precision HJT9B-FP Lithium Ion Battery, a modern, lightweight, and maintenance-free replacement battery compatible with many YT/HT/CT/GT9B series models and designated as a drop-in alternative for ST9B-4 applications. This high-performance battery delivers exceptional cycle life, fast recharge capability, and a built-in capacity indicator, making it an excellent choice when you want a long-lasting battery that reduces weight and improves reliability.

Key Specifications

  • Battery model: Precision HJT9B-FP
  • Replacement compatibility: YT9B-4(Gel), YT9B-4, YT9B-BS, HT9B-4(Gel), HT9B-4, HHT9B-BS, CT9B-4(Gel), CT9B-4, CT9B-BS, GT9B-4(Gel), GT9B-4, GT9B-BS
  • Also listed as replacement for: SigmasTek ST9B-4
  • Voltage: 12 Volts
  • Capacity: 8 AH
  • Brand: Precision Battery
  • Terminal type: Nut & Bolt
  • Weight/size advantage: Up to 65% lighter than Lead Acid Battery
  • Recharge performance: 6-Minutes Fast Recharge Time (quick recharge with big current)
  • Cycle life: Excellent cycle life — 2000+ extreme cycles vs. 350 for Lead Acid
  • Safety: No spill — mounts in any direction, no acid inside, no leak problems
  • Indicator: Includes built-in, easy-to-read battery capacity indicator
  • Environmental: No pollution — does not contain acid or heavy metals such as lead, cadmium, mercury
  • Installation aid: Includes high-density foam spacers for secure installation
  • Charger notes: Lead-acid chargers can be used with limitations; chargers without a voltage limitation (maximum 14.9V), desulfation type chargers, or chargers without an automatic shutoff are not compatible

Benefits

  • Durability: Lithium-ion chemistry and robust construction provide reliable performance with no acid to leak, and mounting in any orientation increases installation flexibility and safety.
  • Long life: With more than 2000 extreme cycle life cycles compared to roughly 350 for lead-acid, this replacement battery offers a significant longevity advantage, reducing replacement frequency and lifecycle cost.
  • High performance: Fast recharge capability and high discharge tolerance support demanding applications that require quick recovery and dependable starting power.
  • Applications: Ideal as a replacement battery for motorcycles, scooters, personal watercraft, and other small vehicle applications that originally used the YT/HT/CT/GT9B or ST9B-4 family of lead-acid batteries.
  • Environmental and user safety: No acid or heavy metals means safer handling, reduced environmental impact, and easier mounting options without worry of spills.

Make the smart upgrade to a lighter, longer-lasting Precision HJT9B-FP replacement battery for your ST9B-4 or compatible model. Experience faster recharge, exceptional cycle life, and reliable performance — order your Precision 12V 8Ah lithium-ion battery today and enjoy improved power and peace of mind.

Technical Specifications

Voltage12 Volts
Amp Hours8 AH
Terminal TypeNut & Bolt
Cold Cranking Amps (CCA)190
Length (in.)5.9
Width (in.)2.6
Height (in.)3.6
Weight (lb.)1.1

Product Highlights

  • Brand Replacement : SigmasTek
  • Manufacturer: Precision Battery
  • Product Type: Powersport Batteries
  • Warranty: 6 Months
  • Bulk Orders: sales@batteryweb.com

Connections & Interface

  • Polarity: "'+/-"

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