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SigmasTek  |  SKU: BW-5274

APC SMART-UPS SU1250 UPS High Performance Replacement Battery Set 25.32 lb

25% off
New arrival
Sale price $113.99 USD Regular price $150.99
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Set of 2 brand new SigmasTek SP12-18HR batteries (12V 18AH) for APC SMART-UPS SU1250
Valve regulated spill-proof construction for safe and clean operation
High vibration resistance for durability in active environments
Tested to meet or exceed OEM specifications for reliable performance
Ideal for UPS, emergency power, and battery-powered tools
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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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Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Replacement Battery Set for APC SMART-UPS SU1250 — SigmasTek SP12-18HR (Compatible with SU1250)

Replace aging batteries in your APC SMART-UPS SU1250 with this dependable SigmasTek replacement UPS battery set. Engineered for both reliable standby capacity and robust short-term power output, this kit brings renewed confidence to your UPS protection strategy. Whether protecting a small data center, network cabinet, or critical workstation, this replacement UPS battery helps ensure uninterrupted operation when power problems occur.

Key Specifications

  • Includes: 2 SigmasTek SP12-18HR batteries
  • Voltage: 12 Volts
  • Amp-Hour (Ah): 18 AH
  • Battery Model: SP12-18HR
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility note: Must use all existing cables and hardware from original configuration
  • Brand: SigmasTek

Benefits

This high-performance UPS battery set is built for users who require dependable, long-lasting battery backups. The high rate discharge capability is tailored for the APC SMART-UPS SU1250, delivering necessary power surges for brief intervals without compromising battery life. Low self-discharge extends shelf life for spare sets, making this an excellent long-lasting battery option for maintenance planning and emergency readiness.

Valve regulated construction ensures spill-proof safety and minimal maintenance, while high vibration resistance and industry certifications (U.L., CE) guarantee rugged reliability in office and IT environments. Use this replacement UPS battery in Uninterruptible Power Supply (UPS) units, emergency power supply systems, and select battery-powered tools where dependable short-term power is required. Each set is tested by our technical team to meet or exceed OEM specifications so your SU1250 performs as expected.

Fast shipping is available for in-stock items, typically within 24 hours. For assistance confirming fitment or step-by-step replacement guidance, contact our knowledgeable customer service at or e-mail us.

Ready to restore full protection? Order this replacement, high-performance UPS battery set for your APC SMART-UPS SU1250 now and secure reliable emergency power for your critical systems.

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 : APC SMART-UPS
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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