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SigmasTek  |  SKU: BW-1876

SigmasTek 12 Volt 18 Amp SLA High Performance Replacement Battery Set (2) 25.32 lb

18% off
New arrival
Sale price $113.99 USD Regular price $138.99
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Set of 2 brand new SigmasTek UPS12-18 batteries (12V 18 AH)
High rate discharge design delivers strong, short-term power
Valve regulated spill-proof construction for safe use
Low self-discharge maintains performance during storage
UL recognized, CE certified with 1 year warranty
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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 | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek UPS12-18 (NB) — Compatible with UPS12-18 (NB) UPS Models

Upgrade your UPS system with this brand new set of replacement UPS battery modules designed for compatibility with the UPS12-18 (NB) model. This two-battery set from SigmasTek delivers reliable performance, dependable runtime, and the robust construction required for high-rate discharge applications. Built for performance and tested to meet or exceed OEM specifications, this pack is a practical, long-lasting battery solution for UPS systems, emergency power and battery-powered tools.

Key Specifications

  • Model: UPS12-18 (NB)
  • Quantity: Set of 2 batteries
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof Construction
  • Features: Low Self-discharge; High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • Installation Note: Use all existing cables and hardware from original configuration to connect

Benefits

  • Durability: Valve regulated, spill-proof construction and high vibration resistance help ensure a durable, safe replacement UPS battery that stands up to the demands of daily UPS use.
  • Long Life: Low self-discharge characteristics extend storage life and readiness — ideal when you need a long-lasting battery that stays reliable over time.
  • High Performance: Specifically engineered with a high rate discharge design for delivering higher power output during short-duration, high-demand events — a true high-performance UPS battery for critical systems.
  • Safety & Certification: U.L. recognized and CE certified to meet industry safety standards, giving you confidence in installation and operation.
  • Versatile Applications: Perfect for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools — this replacement UPS battery set is ready for diverse uses.
  • OEM-Grade Testing: Each battery is tested by our technical staff to ensure compatibility with UPS12-18 (NB) systems and to meet or exceed OEM expectations for runtime and reliability.

Ready to upgrade? Buy this SigmasTek replacement UPS battery set for your UPS12-18 (NB) today and secure a high-performance, long-lasting battery solution backed by factory-fresh condition and a 1 year warranty. Orders for in-stock items usually ship within 24 hours — purchase with confidence.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)25.3

Product Highlights

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

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