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-5329

OPTI-UPS ON910 UPS Compatible Replacement Battery 12.66 lb

19% off
New arrival
Sale price $55.99 USD Regular price $68.99
Shipping calculated at checkout.
High Rate Discharge Design for quick power boosts in emergencies
Valve Regulated Spill Proof Construction reduces maintenance
Low Self-discharge for longer shelf life and readiness
High Vibration Resistance for reliable performance under stress
U.L. and CE Certified with 1 Year Warranty included
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.

Category

UPS Batteries

Brand Replacement

SigmasTek

Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek SP12-18HR 12V 18Ah Replacement Battery — Compatible with OPTI-UPS ON910

Designed specifically for the OPTI-UPS ON910 Uninterruptible Power Supply, the SigmasTek SP12-18HR 12V 18Ah replacement battery provides dependable backup power and excellent discharge characteristics. This valve-regulated, spill-proof unit is a high-performance UPS battery that combines low self-discharge and high vibration resistance for reliable service in demanding environments. If your OPTI-UPS ON910 needs a replacement cell, this factory-fresh battery is built to meet OEM-level expectations.

Key Specifications

  • Brand: SigmasTek (SP12-18HR)
  • Compatible UPS Model: OPTI-UPS ON910
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Battery Type: Valve Regulated, Spill Proof Construction
  • Design: High Rate Discharge Design
  • Additional Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Performance: Superior Performance, Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use existing cables and hardware from the original battery configuration
  • Typical Applications: Uninterruptible Power Supply (UPS) Units, Emergency Power Supply, Battery Powered Tools

Benefits

This replacement battery offers the advantages required for reliable UPS operation. Valve-regulated, spill-proof construction minimizes maintenance and improves safety during service. Low self-discharge keeps the battery ready for extended standby periods, while the high-rate discharge capacity gives the ON910 the immediate power it needs during transfer events. These features make the battery a reliable, long-lasting battery choice for mission-critical systems.

  • Durability: Strong construction and vibration resistance for long-term reliability in fixed and mobile installations.
  • Long life: Low self-discharge and rigorous testing contribute to a long operational lifespan.
  • High performance: Specifically engineered as a high-performance UPS battery for short, high-current demands typical of UPS use.
  • Applications: Ideal for UPS systems, emergency backup, and battery powered tools where trustworthy power is required.
  • Installation-ready: Designed to be used with your existing cables and hardware for straightforward replacement.

Replace your OPTI-UPS ON910 battery with confidence — purchase this SigmasTek replacement UPS battery now for a fast, reliable restoration of backup power and enhanced long-term performance.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)12.65

Product Highlights

  • Brand Replacement : OPTI-UPS ON910
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • MB WAY
  • 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.