For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-19895

GS-JSB GT9B-4 High Performance Replacement Battery

Sale price $56.83 USD Regular price $72.25
Shipping calculated at checkout.

➤ Maintenance-free AGM design eliminates the need for acid filling

➤ Spillproof and leakproof construction for safe handling

➤ U.L. recognized and CE certified for guaranteed safety and quality

➤ Extreme resistance to freeze, heat, and vibration for reliable performance

➤ Superior starting power with deep cycle capacity for demanding motorcycle use


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

Disclaimer

⚠️ 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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 8 AH

Terminal Type

Nut & Bolt

GS-JSB GT9B-4 — Compatible Replacement for GT9B-4

Upgrade to a dependable GS-JSB GT9B-4 replacement battery engineered for consistent performance, maintenance-free convenience, and reliable starts every time. This AGM maintenance-free battery offers the safety and power delivery needed for modern motorcycles and other high-rate discharge applications. Choose the GS-JSB GT9B-4 when you want a high-performance battery that delivers durable, long-term service without the hassle of acid maintenance.

Key Specifications

  • Model: GT9B-4 (Replacement)
  • Type: AGM Maintenance Free (Absorbed Glass Mat Design)
  • Voltage: 12 Volts
  • Capacity: 8 AH
  • Terminal: Nut & Bolt
  • Design: Spillproof and Leakproof
  • Certifications: U.L. Recognized and CE Certified
  • Valve Regulated Vent System
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Resistance: Extreme Freeze, Heat and Vibration Resistance
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty
  • Brand: GS-JSB (compatible replacement)

Benefits

The GS-JSB GT9B-4 replacement battery delivers exceptional durability thanks to its absorbed glass mat construction and valve regulated vent system. As an AGM maintenance-free unit, it provides a long-lasting battery solution with zero acid filling—eliminating messy maintenance and improving safety. The spillproof, leakproof design is ideal for installation in tight, vibration-prone environments common to motorcycles.

Expect superior starting power even in challenging conditions; the GT9B-4 is engineered for high-rate discharge scenarios where rapid bursts of energy are needed. The battery’s robust freeze, heat, and vibration resistance extends service life and reduces the risk of premature failure, making it a smart choice for riders and installers who demand reliability.

Beyond motorcycles, this replacement battery is well-suited to a variety of applications that benefit from a compact, long-lasting battery: UPS standby modules, portable emergency power packs, power tools with intermittent high current draw, and other small equipment requiring a dependable 12V supply. As a high-performance battery option, it balances starting power with deep cycle capability for versatile use.

Don’t settle for an underpowered battery—purchase the GS-JSB GT9B-4 replacement battery today to enjoy a long-lasting battery solution with fast shipping and a 6 month warranty. Click to buy the high-performance battery your vehicle deserves.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.