Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-16677

Union Battery MX-12120 High Performance Replacement 7.28 lb

24% off
Sale price $47.99 USD Regular price $62.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) Technology for enhanced performance
Maintenance-Free and Spill Proof design for hassle-free use
U.L. Recognized and CE Certified for safety and reliability
Brand New, Factory Fresh condition ensures long life
1 Year Warranty provides peace of mind and protection
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

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.

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

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

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 | 12 Ah

Terminal Type

F2

Union Battery MX-12120 Replacement Battery — Compatible with Union Battery MX-12120

For dependable power in your Union Battery MX-12120 device, choose this engineered replacement battery that meets OEM SLA specifications. The Union Battery MX-12120 replacement features Absorbent Glass Mat (AGM) technology in a sealed, maintenance-free design to deliver reliable performance under steady loads and during emergency use. This factory-fresh unit is ready to install and provides consistent, long-term power for a wide range of applications.

Key Specifications

  • Model: Union Battery MX-12120
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 12 Ah
  • Terminal: F2
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Replacement Brand: SigmasTek

Benefits

  • Durability: The AGM design and sealed build resist vibration and environmental factors, providing reliable service life as a replacement battery.
  • Long life: Engineered for extended cycle life, this long-lasting battery reduces maintenance frequency and cost over time.
  • High performance: Stable voltage under load and excellent charge acceptance make it a solid choice for both standby and cyclic applications.
  • Maintenance-free convenience: Spill-proof construction eliminates the need for electrolyte checks or top-ups, simplifying deployment.
  • Compliance and safety: U.L. recognized and CE certified for added assurance in commercial and residential installations.
  • Typical applications: Well-suited for UPS units, emergency lighting, security systems, point-of-sale hardware, medical devices, and portable power tools that require a dependable 12V supply.
  • Easy swap: Built to be fully compatible with the Union Battery MX-12120 model for a quick and reliable replacement.

Restore reliable power with this Union Battery MX-12120 replacement battery. If you want a high-performance battery that’s long-lasting and ready to go out of the box, order now and take advantage of fast shipping and a 1 year warranty for peace of mind.

Technical Specifications

Voltage12 Volts
Amp Hours12 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)3.86
Height (in.)3.7
Weight (lb.)7.27

Product Highlights

  • Brand Replacement : Union Battery MX-12120
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • 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.