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SigmasTek  |  SKU: BW-5328

OPTI-UPS ON910BP UPS Compatible Replacement Battery 12.66 lb

10% off
New arrival
$55.99 USD $61.99
Shipping calculated at checkout.
High Rate Discharge Design supports heavy UPS power needs
Valve Regulated Spill Proof Construction ensures safe usage
Low Self-discharge maintains charge longer when unused
High Vibration Resistance for durability in tough conditions
Certified with U.L. and CE marks, plus 1 Year Warranty
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Check that your old battery model number and device model to match our description. This makes sure they work together.

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Let customers speak for us

from 22 reviews

WORKS GREAT!

Anonymous

Fast shipping and fair pricing. I will look to you for future battery purchases.

Anonymous

It's hard to rate a battery until some time has passed and it either continues functioning as it should of "gives up the ghost." It was not a straight bolt in application. The positive terminal was different than the stock battery and the positive lead from the motorcycle had to be bent in order to attach it to the battery. Otherwise, if the battery gives long service I have no complaints.

Anonymous

Shopping with you is a bit difficult; I had to type in a few words differently before I could find the battery's I was looking for.

Laura J

Excellent Product, timely delivery, love the extra battery life. Would recommend. rk

Robin Keister

Very easy to buy, high confidence that it was legit company. Reviews were good. Price, in the ball park. We'll see when I get battery.

Rob

Thank you for supplying the battery that I wanted. It arrived today in good order. Its specifications are as advertised and after charging, performs as expected.
Thank you for your professional approach to the payment method.
Regards Roy VK4ZQ.

Roy O'Malley

It worked

Mel Light

Finally found a battery that is similar in function to original equipment.

Anonymous

I'm writing this review to express my deep gratitude and appreciation for the quality of services provided to me by the BatteryWeb service team. I visited BatteryWeb to purchase a replacement battery for my Remington R9 razor. The staff was very responsive and I was really impressed with their willingness to help me and make the purchasing process as quick as possible. In particular I greatly appreciate the work of staff member Shane who was friendly and helpful.
In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
I wish you all the best.
Sincerely,
Michael

Michael Talianker

this battery was just what I needed.

Robert Jones

Product is exactly as described and arrived quickly

Robert Jones

Great deal for the money.

Linda M.

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.

Easy to purchase

Alberto J.

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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.

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 ON910BP

This premium replacement UPS battery is optimized for the OPTI-UPS ON910BP Uninterruptible Power Supply. The SigmasTek SP12-18HR (12 Volts, 18 AH) is a valve-regulated, spill-proof battery engineered for superior discharge performance and low self-discharge characteristics. It is an ideal option for users seeking a high-performance UPS battery that delivers dependable backup power and long service life under frequent cycling or high-rate discharge conditions.

Key Specifications

  • Brand: SigmasTek (SP12-18HR)
  • Compatible UPS Model: OPTI-UPS ON910BP
  • 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, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use all existing cables and hardware from the original configuration to connect the new UPS battery
  • Typical Applications: Uninterruptible Power Supply (UPS) Units, Emergency Power Supply, Battery Powered Tools

Benefits

This SigmasTek replacement provides clear benefits for UPS operators and service technicians. The valve-regulated, spill-proof construction simplifies handling and reduces maintenance concerns. Low self-discharge ensures the battery remains ready for years in standby service, while high vibration resistance protects performance in mobile or industrial environments. Its high-rate discharge design supplies the necessary burst power for UPS units during transfer events.

  • Durability: Robust valve-regulated construction and high vibration resistance for reliable field performance.
  • Long life: Low self-discharge and quality manufacturing support extended standby life — a dependable, long-lasting battery for critical systems.
  • High performance: Engineered for high-rate discharge situations, making it a high-performance UPS battery for short-duration, high-current demands.
  • Versatility: Suitable for UPS units, emergency power systems, and battery-powered tools where reliable backup power is essential.
  • Tested quality: SigmasTek and our technical staff ensure each unit meets or exceeds OEM expectations for the OPTI-UPS ON910BP.

Ready to replace your OPTI-UPS ON910BP battery? Order the SigmasTek SP12-18HR replacement UPS battery today for fast shipment and confident, long-lasting backup power. Use your original cables and hardware for installation and enjoy superior performance immediately.

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 ON910BP
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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