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SigmasTek  |  SKU: BW-5043

ONEAC ONXBCU-417R UPS High Performance Replacement Battery Set 50.64 lb

17% off
New arrival
$216.99 USD $260.99
Shipping calculated at checkout.
Includes 4 brand new SigmasTek SP12-18HR batteries (12V 18AH)
High rate discharge design for reliable short-term power bursts
Valve regulated, spill-proof construction for safety and durability
Low self-discharge and high vibration resistance for long-lasting performance
U.L. recognized and CE certified with a 1-year warranty for peace of mind
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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.

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⚠️ 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

Built for compatibility with the ONEAC ONXBCU-417R UPS, this replacement battery pack combines tested SigmasTek performance with dependable, long-lasting battery chemistry. If your ONEAC ONXBCU-417R requires fresh batteries, this set offers reliable runtime restoration for critical backup systems.

Replacement Battery Set for ONEAC ONXBCU-417R

Key Specifications

  • Included batteries: 4 x SigmasTek SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal type: Nut & Bolt
  • Brand: SigmasTek (for ONEAC)

Benefits

  • Valve-regulated, spill-proof construction ensures safe indoor use in the ONEAC ONXBCU-417R, reducing maintenance and containment concerns.
  • High rate discharge characteristics deliver the short-duration power spikes necessary to support critical loads and ensure smooth transfers — a true high-performance UPS battery.
  • Low self-discharge improves storage life and readiness, helping these batteries act as a long-lasting battery choice for infrequent-use emergency systems.
  • High vibration resistance increases reliability in rack or mobile installations and reduces risk of premature failure from mechanical stress.
  • U.L. and CE certifications provide assurance that these batteries meet recognized safety and quality standards.
  • Designed and tested to meet or exceed OEM expectations, the SigmasTek SP12-18HR cells restore reliable runtime at a competitive price compared to OEM packs.
  • Ideal for Uninterruptible Power Supply (UPS) units, emergency power supplies, and battery-powered tools where consistent, immediate backup power is crucial.
  • Installation note: you must reuse your original cables and hardware to connect these batteries; contact our support team if you need guidance.

Ready to replace the batteries in your ONEAC ONXBCU-417R? Order this replacement UPS battery set today to restore backup capability and protect your equipment during 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.)50.6

Product Highlights

  • Brand Replacement : ONEAC ONXBCU-417R
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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