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SigmasTek  |  SKU: BW-18670

Power Max GTZ12S High Performance Replacement Battery

Sale price $72.80 USD Regular price $92.56
Shipping calculated at checkout.

➤ Maintenance-free AGM design eliminates need for acid filling

➤ Spillproof and leakproof for safe, hassle-free use

➤ Certified by U.L. and CE for reliable quality and safety

➤ Superior starting power with deep cycle capacity for motorcycles

➤ Resistant to extreme freeze, heat, and vibration conditions


📦🚀 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 | 11 Ah

Terminal Type

Nut & Bolt

Replacement Power Max GTZ12S Battery — Compatible with GTZ12S

Restore peak performance to your motorcycle with this compatible replacement battery for the Power Max GTZ12S. This AGM maintenance-free unit eliminates the hassle of liquid electrolyte maintenance while delivering the consistent cranking and accessory power riders depend on. As a high-performance battery engineered for high-rate discharge, it’s an excellent replacement battery option for GTZ12S installations where rapid, reliable power is essential.

Key Specifications

  • Model: GTZ12S (compatible replacement)
  • Brand: SigmasTek
  • Original/Reference: Power Max
  • Voltage: 12 Volts
  • Capacity: 11 Ah
  • Terminal Type: Nut & Bolt
  • Construction: Absorbed Glass Mat (AGM)
  • Design: Maintenance-Free, Spillproof and Leakproof
  • Certifications: U.L. Recognized and CE Certified
  • Valve System: Valve Regulated Vent System
  • Durability: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

Enjoy the benefits of a durable, long-lasting battery engineered to withstand the rigors of motorcycle use. The AGM construction provides superior vibration resistance and a sealed, maintenance-free experience so you can install and ride without worrying about acid top-ups. This long-lasting battery is also spillproof and leakproof for safer handling and transport.

Performance-focused riders will value the superior starting power and deep cycle capacity — a blend that supports both reliable engine starts and accessory operation. As a high-performance battery, it excels in high-rate discharge environments like motorcycles, scooters, and powersports vehicles. Typical applications include motorcycle starting systems, emergency backup power, portable tools, and auxiliary lighting where short bursts of high power are needed.

The unit’s U.L. recognition and CE certification validate quality and safety standards. Backed by professional testing, factory-fresh condition, and a 6 month warranty, this replacement battery offers confidence and value. Whether replacing a failing battery or upgrading to a maintenance-free option, this GTZ12S compatible unit provides reliable energy and peace of mind.

Don’t wait — order this replacement Power Max GTZ12S high-performance battery today and benefit from dependable starts, long-lasting performance, and prompt shipping. Click to purchase and get back on the road with confidence.


Payment & Security

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