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-5594

Tellabs 612 ONT Compatible Replacement Battery 5.25 lb

24% off
Sale price $33.99 USD Regular price $44.99
Shipping calculated at checkout.
High discharge design for reliable power output
VRLA sealed battery technology for safe operation in any position
Meets or exceeds original Tellabs 612 ONT battery specifications
UL certified for quality, safety, and durability assurance
1-year warranty included for peace of mind
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 | 7.5 Ah

Terminal Type

F2

Tellabs 612 ONT Replacement Battery — Compatible with Tellabs 612 ONT

Ensure uninterrupted operation of your Tellabs 612 ONT with this reliable 12V 7.5AH replacement battery. Engineered for compatibility and performance, this high-performance battery delivers a high-discharge design and broad operating temperature tolerance to support critical network equipment. It’s a long-lasting battery solution that meets or exceeds the original specifications for dependable power in fiber or network termination devices.

Key Specifications

  • Compatible Model / Unit: Tellabs 612 ONT
  • Volts: 12 V
  • Amp Hours: 7.5 AH
  • Terminal: F2
  • Technology: VRLA (Valve-Regulated Lead Acid) sealed battery
  • Certification: UL (Underwriters Laboratories) certified
  • Package contains: 1 battery
  • Weight: 5.25 Lbs
  • Length: 5.95 In
  • Width: 2.56 In
  • Height: 3.7 In
  • Design features: high discharge design, wide operating temperature range, long expected service life
  • Compatibility note: Guaranteed compatibility with original battery; reuse existing cables and install in original configuration
  • Warranty: 1-year Warranty
  • Shipping: ETD 3 Business Days; Shipping Methods – UPS Ground and USPS; in-stock items ship in 1 business day

Benefits

This Tellabs 612 ONT replacement battery combines maintenance-free VRLA technology with UL certification for safe, dependable operation near people and sensitive electronics. The robust construction and high-discharge capability make it suitable for peak-power demands, delivering a long-lasting battery solution that reduces the need for frequent replacements. Its sealed design minimizes leakage risk and allows flexible installation orientation.

Ideal applications include ONT and network termination units, UPS systems, emergency backup power, alarm and security systems, and portable electronics requiring reliable 12V power. As a replacement battery built to match original performance, it’s perfect for technicians and facility managers who need a quick, trustworthy swap with minimal downtime. Always verify dimensions before ordering to account for possible manufacturer changes.

Don’t wait for a failure—replace your Tellabs 612 ONT battery now with this long-lasting, high-performance battery backed by a 1-year warranty and fast shipping. For questions or help, reach our customer service team via email, chat, or call toll free at .

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)5.25

Product Highlights

  • Brand Replacement : Tellabs 612 ONT
  • Manufacturer: SigmasTek
  • Product Type: Telecom 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.