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SigmasTek  |  SKU: BW-19890

Power Max 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 refills

➤ Spillproof and leakproof for safe and hassle-free handling

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

➤ Superior starting power with deep cycle capacity for reliable performance

➤ Resistant to extreme freeze, heat, and vibration for long-lasting durability


📦🚀 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.

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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

Power Max GT9B-4 Replacement Battery — Compatible with GT9B-4

Get reliable starts and consistent power with the Power Max GT9B-4 replacement battery — a premium AGM maintenance-free option designed for compatibility, robust performance, and long-term dependability. This ready-to-install battery eliminates the need for acid filling and delivers factory fresh power straight out of the box. Ideal for motorcycles and other powersport vehicles that demand high-rate discharge and instant starting torque.

Key Specifications

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

Benefits

The Power Max GT9B-4 is a high-performance battery engineered for riders and technicians who need reliable power in demanding conditions. Its AGM, maintenance-free construction ensures a spillproof, leakproof user experience while offering excellent vibration resistance and thermal stability for extreme freeze and heat environments. That translates to fewer replacements and more dependable starts over the life of the battery.

As a long-lasting battery choice, it provides both superior starting capacity and solid deep-cycle performance for lights, ignition systems, and accessory loads. The valve regulated vent system and recognized safety certifications add confidence in everyday use and during high-stress starts.

Use this replacement battery for motorcycles, scooters, and powersport vehicles that require brief, high-current bursts. It also suits portable emergency power roles, small UPS setups, and handheld tools that need dependable short-term power delivery.

Ready to ride with confidence? Purchase the Power Max GT9B-4 replacement battery today for a long-lasting battery solution with strong starting power and a 6 month warranty. Buy now for fast shipping and trusted performance.


Payment & Security

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