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SigmasTek  |  SKU: BW-1613

Topaz 850 High Performance Compatible Replacement Battery Set 49.45 lb

17% off
New arrival
Sale price $245.99 USD Regular price $295.99
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Comes with 2 replacement 12V 35AH UPS batteries with NB terminals
AGM technology ensures maintenance-free, leak-proof operation
UL certification guarantees safety and performance standards
Fits and installs with original UPS cables and hardware
1-year warranty included for product assurance
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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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement SigmasTek 12V 35AH (x2) for Topaz 850 UPS

Engineered for the Topaz 850, this replacement UPS battery bundle provides dependable compatibility, consistent performance, and long-term reliability. The two 12V 35AH sealed batteries use advanced AGM technology to deliver efficient power storage with minimal maintenance. These UL-certified batteries are a direct replacement option that meets or exceeds OEM specifications, keeping your Topaz 850 UPS ready for power disruptions and critical backup scenarios.

Key Specifications

  • Compatible UPS model: Topaz 850
  • Package contains: 2 batteries (price includes both batteries)
  • Voltage: 12 V
  • Amp Hours: 35 AH
  • Chemistry: SLA (Sealed Lead Acid)
  • Battery Technology: AGM (Absorption Glass Mat) Sealed Battery Technology
  • Terminal: NB (Nut & Bolt)
  • Weight: 49.4 Lbs (per battery)
  • Dimensions: Length 7.72 In, Width 5.14 In, Height 6.14 In
  • Warranty: 1-year Warranty
  • Certification: UL (Underwriters Laboratories) certified
  • Brand/Supplier: SigmasTek (sourced by ReplaceUPSBattery.com)
  • Shipping: UPS Ground and USPS; we ship in 1 business day for all in-stock items
  • Guaranteed compatibility with original battery set

Benefits

This replacement UPS battery set is built to last, providing a long-lasting battery option for the Topaz 850. AGM technology enhances cycle life and reduces maintenance compared to flooded lead-acid batteries, making these units an excellent choice for regular use and emergency backup. As a high-performance UPS battery, they deliver consistent output under load and quick recovery, ensuring your UPS provides stable power to essential systems when the grid fails.

Ideal applications include UPS systems for IT equipment, emergency power for communications gear, and other standby power roles. The 35 AH capacity balances runtime with size, providing meaningful backup without requiring oversized bay space. The NB (nut & bolt) terminal style secures connections and simplifies installation when reusing the original cables and hardware in your Topaz 850 configuration.

These UL-certified batteries come with a one-year warranty and quick shipping options, helping you restore protection with minimal delay. Always verify existing battery dimensions before ordering, since manufacturers can update case sizes without notice.

Don’t wait until a failure—ensure your Topaz 850 is protected with this reliable, long-lasting replacement UPS battery set. Add to cart today or contact our support team at (800) 657-1303 for help selecting the right option.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)49.4

Product Highlights

  • Brand Replacement : Topaz 850
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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