National Power Corporation GT120S4 High Performance Replacement Battery 18.1 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
National Power Corporation GT120S4 High Performance Replacement Battery is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician 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 BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
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
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.
Disclaimer
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.
Volts & Amps
12 Volts | 26 Ah
Terminal Type
Nut & Bolt
National Power Corporation GT120S4 Replacement Battery — Compatible with GT120S4
This National Power Corporation GT120S4 replacement battery is a purpose-built, high-performance battery solution for emergency lighting and related life-safety equipment. Engineered for compatibility with the GT120S4 model, this replacement battery delivers dependable performance, maintenance-free operation and spill-proof safety — making it a top choice for facility managers who require a long-lasting battery backed by clear specifications and certification.
Key Specifications
- Model: National Power Corporation GT120S4 (replacement)
- Battery Technology: Absorbent Glass Mat (AGM) Technology
- Design: Maintenance-free design
- Construction: Spill proof construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand new, factory fresh
- Warranty: 1 Year Warranty
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 26 Ah
- Terminal Type: Nut & Bolt
Benefits
- Durability: AGM construction provides robust, vibration-resistant performance and resists leakage — a reliable long-lasting battery option for installed emergency systems.
- High Performance: Designed specifically to meet or exceed OEM SLA specifications for the GT120S4, ensuring consistent output under emergency loads.
- Maintenance-Free: AGM sealed design eliminates the need for routine electrolyte checks or refilling, reducing maintenance time and cost.
- Safety & Compliance: UL recognition and CE certification give confidence when deploying in commercial, institutional and regulated environments.
- Versatile Applications: Ideal for emergency lighting, security alarms, fire alarm systems, consumer electronics, medical equipment, UPS support and other backup power applications.
- Easy Installation: Standard 12V, 26Ah capacity and nut & bolt terminals offer straightforward, secure connections in field replacements.
- Value & Support: Sold factory fresh with a 1-year warranty and customer service support to help ensure the correct replacement battery for your GT120S4 system.
Ready to restore reliable backup power? Order this National Power Corporation GT120S4 replacement battery today. Choose a high-performance battery that delivers the dependable, long-lasting battery performance your emergency lighting and safety systems demand — buy now and get fast service and expert support.
Technical Specifications
Product Highlights
- Brand Replacement : National Power Corporation
- Manufacturer: SigmasTek
- Product Type: Emergency Power
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




