Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com

WELCOME10
SigmasTek  |  SKU: BW-5273

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

21% off
New arrival
Sale price $69.49 USD Regular price $87.77
Shipping calculated at checkout.
Includes 2 SigmasTek SP12-18HR (12V 18AH) batteries for APC SMART-UPS SU1250 RACK
High rate discharge design supports high power UPS applications
Certified to U.L. and CE standards for quality assurance
Low self-discharge keeps batteries charged during storage
1 year warranty and factory fresh for dependable replacements
In stock

— Ready to ship immediately


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 | 18 Ah

Terminal Type

Nut & Bolt

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

Ensure continuous protection for your rack-mount APC SMART-UPS SU1250 RACK with this premium replacement UPS battery set. Designed to deliver reliable, high-rate power, this SigmasTek SP12-18HR kit restores runtime and stability to networking racks, server enclosures, and critical infrastructure. Count on consistent performance, safety, and tested reliability when you choose this replacement UPS battery for your SU1250 RACK.

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 replacement UPS battery set offers the durability and performance expected in rack-mounted UPS deployments. The high rate discharge design supplies the quick bursts of power required by the APC SMART-UPS SU1250 RACK when managing transient loads or during switch-over events. Low self-discharge helps this kit remain a reliable, long-lasting battery solution when kept on-hand for maintenance or emergency replacement.

Valve regulated spill-proof construction keeps installations clean and safe, while high vibration resistance ensures dependable operation in busy racks and data center environments. Certified to U.L. and CE standards and shipped factory-fresh, these batteries are tested to meet or exceed OEM performance criteria, making them an ideal choice for Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools that require robust, repeatable power.

We prioritize fast fulfillment—orders for items in stock typically ship within 24 hours. If you need help verifying compatibility or installing the new cells into your SU1250 RACK, contact our support team at or e-mail us for expert assistance.

Buy this high-performance, long-lasting replacement UPS battery set for your APC SMART-UPS SU1250 RACK today to restore full backup capability and protect your equipment from unexpected outages.

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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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.