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SigmasTek  |  SKU: BW-4913

OPTI-UPS VS375CB UPS Compatible Replacement Battery 2.98 lb

19% off
New arrival
$28.99 USD $35.99
Shipping calculated at checkout.
Replacement battery for OPTI-UPS VS375CB UPS model
High rate discharge for peak power demands
Valve regulated and spill-proof for safety
Low self-discharge and vibration resistant
U.L. Recognized and CE Certified with 1 year warranty
In stock

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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Category

UPS Batteries

Brand Replacement

SigmasTek

Volts & Amps

12 Volts | 3.5 Ah

Terminal Type

F2

SigmasTek SP12-3.5HR Replacement Battery — Compatible with OPTI-UPS VS375CB

When your OPTI-UPS VS375CB needs a dependable power module, replace it with the SigmasTek SP12-3.5HR replacement UPS battery. This unit is designed to provide reliable backup power with strong short-term output and proven construction. It’s a great choice for users seeking a high-performance UPS battery that remains ready when needed — simply reuse the original cables and hardware during installation for a seamless swap.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-3.5HR
  • Voltage: 12 Volts
  • Capacity: 3.5 AH
  • Terminal: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible UPS Model: OPTI-UPS VS375CB

Benefits

  • Dependable durability: Built with a valve regulated, spill-proof case and engineered for high vibration resistance, this replacement UPS battery is made to handle the rigors of UPS service and transport.
  • Extended readiness: Low self-discharge chemistry ensures the battery maintains capacity during storage and remains ready for emergency use — an important attribute for any long-lasting battery used in critical systems.
  • High-performance output: The high rate discharge design enables increased power delivery for brief but demanding events, making this a high-performance UPS battery for short-duration loads and surge protection.
  • Wide application range: Ideal for uninterruptible power supply (UPS) units, emergency power supply systems, and battery powered tools. Tested by experienced technicians to meet or exceed OEM specifications for OPTI-UPS VS375CB compatibility.
  • Safety and certification: U.L. recognized and CE certified, providing peace of mind regarding manufacturing standards and safe operation in consumer and professional UPS installations.

Replace your OPTI-UPS VS375CB battery now with the SigmasTek SP12-3.5HR for reliable backup and consistent performance. Order today to get a high-performance, long-lasting battery shipped quickly to your door.

Technical Specifications

Voltage12 Volts
Amp Hours3.5 Ah
Terminal TypeF2
Length (in.)5.24
Width (in.)2.64
Height (in.)2.36
Weight (lb.)2.98

Product Highlights

  • Brand Replacement : OPTI-UPS VS375CB
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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