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-6440

Altronix AL642UL2ADA Alarm High-Performance Compatible Replacement Battery Set 14.51 lb

14% off
Sale price $81.99 USD Regular price $94.99
Shipping calculated at checkout.
Compatible with Altronix brand replacements
Compact size: 5.95" L x 3.86" W x 3.7" H
Reliable 12 Volt, 12 Ah capacity for long-lasting power
F2 terminal type for easy installation
Weighs 14.5 lbs for sturdy, durable use
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

SigmasTek 12V 12Ah F2 Replacement Battery — Compatible with Altronix

Designed as a direct-fit replacement battery for Altronix security systems, the SigmasTek 12 Volts 12 Ah F2 battery delivers dependable power, consistent performance, and proven reliability. Whether you’re maintaining an alarm panel, access control, or UPS backup, this replacement battery provides the reliable reserve power you need to keep critical systems online. This high-performance battery is engineered for consistent charge acceptance and dependable standby service, making it a top pick for security professionals and facility managers seeking a long-lasting battery solution.

Key Specifications

  • Manufacturer: SigmasTek
  • Length (in.): 5.95
  • Brand Replacement: Altronix
  • Width (in.): 3.86
  • Voltage: 12 Volts
  • Height (in.): 3.7
  • Amp Hours: 12 Ah
  • Weight (lb.): 14.50
  • Terminal Type: F2
  • Type: Security Alarm

Benefits

This SigmasTek replacement battery offers exceptional durability and a long service life, built to withstand the demands of continuous standby applications. As a high-performance battery, it delivers stable voltage under load and reliable recharge characteristics—ideal for emergency power, UPS systems, alarm panels, access control, and other mission-critical devices. The F2 terminal provides secure, easy connections, reducing installation time and ensuring a firm electrical contact for consistent power delivery.

Engineered for long-term reliability, this long-lasting battery minimizes downtime and replacement frequency, helping to reduce maintenance costs and keep security and backup systems operational. Its compact dimensions make it a space-efficient choice for cabinet-mounted battery compartments commonly found in alarm systems and small UPS enclosures. The weight and build quality signal robust internal construction, offering steady performance across varied environments.

Choose this replacement battery when you need a practical, cost-effective power solution that doesn’t compromise on performance. Its compatibility with Altronix systems and industry-standard F2 terminal make it a straightforward swap-in part for technicians and DIY installers alike. With clear specifications and dependable function, this battery supports critical equipment through power interruptions and everyday operation.

Ready to upgrade to a reliable, high-performance battery? Add the SigmasTek 12V 12Ah F2 replacement battery compatible with Altronix to your cart now and secure long-lasting power for your security and backup systems.

Technical Specifications

Voltage12 Volts
Amp Hours12 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)3.86
Height (in.)3.7
Weight (lb.)14.5

Product Highlights

  • Brand Replacement : Altronix AL642UL2ADA Alarm
  • Manufacturer: SigmasTek
  • Product Type: Security Alarm
  • 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.