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SigmasTek  |  SKU: BW-5335

Emerson 50 UPS High Performance Replacement Battery 12.66 lb

22% off
New arrival
$55.99 USD $71.99
Shipping calculated at checkout.
High Rate Discharge Design for high power output in UPS systems
Valve Regulated Spill Proof Construction minimizes maintenance
Low Self-discharge to keep battery ready for use
High Vibration Resistance for rugged applications
U.L. and CE Certified and includes 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

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In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
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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.

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🔹 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 | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek SP12-18 NB Replacement UPS Battery for Emerson 50

Ensure reliable backup power for your Emerson 50 with the SigmasTek SP12-18 NB replacement UPS battery (12 Volts, 18 AH). Engineered for compatibility and strong performance, this replacement UPS battery is an excellent choice when you need a long-lasting battery to maintain critical uptime. Remember to use all existing cables and hardware from your original configuration to connect the replacement unit.

Key Specifications

  • Brand: SigmasTek
  • Model / Part Number: SP12-18 NB
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof
  • Self-Discharge: Low Self-discharge
  • Vibration Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

  • Reliable and rugged: Valve-regulated, spill-proof design with high vibration resistance supports durability in demanding UPS applications.
  • Long-lasting performance: Low self-discharge characteristics help this long-lasting battery retain charge and provide consistent backup when installed in your Emerson 50.
  • High-discharge capability: Built for high rate discharge situations, this high-performance UPS battery supplies the necessary surge current during brief, high-load events.
  • OEM compatibility and testing: Factory fresh and tested to meet or exceed OEM specifications, ensuring restored runtime and equipment protection.
  • Versatile uses: Suitable for Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools that require a reliable 12V 18AH battery.
  • Certified for safety: U.L. recognized and CE certified for peace of mind in compliance and operation.

Our knowledgeable staff tests each replacement battery for Emerson 50 to guarantee superior performance and reliability. For help purchasing or installing this replacement UPS battery, call customer service at or e-mail support. Orders for in-stock items typically ship within 24 hours to get you back to full protection quickly.

Ready to upgrade your backup power? Buy this high-performance, long-lasting replacement UPS battery for your Emerson 50 today — backed by a 1 year warranty and fast shipping. Order now and protect your critical equipment.

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 : Emerson 50
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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