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SigmasTek  |  SKU: BW-5158

Alpha Technologies Nexsys Dual 600 High Performance UPS Replacement Battery Set 50.64 lb

18% off
New arrival
Sale price $216.99 USD Regular price $264.99
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Replacement battery set with 4 SigmasTek SP12-18HR (12V 18AH) for Alpha Technologies Nexsys Dual 600
High rate discharge supports emergency power and UPS applications
Valve regulated and spill-proof construction for safety and reliability
Low self-discharge preserves battery readiness
Factory fresh and certified with 1-year warranty
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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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Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Replacement Battery Set for Alpha Technologies Nexsys Dual 600 - SigmasTek SP12-18HR (4-Pack)

Keep your Alpha Technologies Nexsys Dual 600 running at peak performance with this full replacement UPS battery set. This 4-pack of SigmasTek SP12-18HR batteries (12 Volts, 18 AH) is engineered for dependable power delivery and high-rate discharge applications that demand short bursts of elevated output. These brand new, factory-fresh batteries are an ideal replacement UPS battery option for maintaining uptime and protecting critical systems. Please note: you must use all existing cables and hardware from your original configuration to hook up the new batteries.

Key Specifications

  • Included Batteries: 4 x SigmasTek SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Compatible With: Alpha Technologies Nexsys Dual 600
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Additional Features: Low Self-discharge; High Vibration Resistance; Superior Performance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This SigmasTek replacement package offers long-term durability and reliable power under demanding conditions. The high-rate discharge design is especially suited to UPS systems requiring high power for short intervals, delivering the burst capacity needed to protect sensitive electronics. Valve regulated, spill-proof construction minimizes maintenance and risk, while low self-discharge ensures the batteries remain ready after storage. High vibration resistance supports stability in mounted or transportable equipment scenarios, making this a robust high-performance UPS battery choice.

Ideal applications include Uninterruptible Power Supply (UPS) units like the Alpha Technologies Nexsys Dual 600, emergency backup systems, and battery-powered tools used intermittently. Our technical staff individually tests these batteries to confirm they meet or exceed OEM specifications, so you receive a reliable, long-lasting battery that restores runtime and reduces the likelihood of unexpected failures. The product carries U.L. and CE recognition plus a 1 year warranty for added peace of mind.

We typically ship in-stock orders within 24 hours, and our customer service team is available to answer purchase or installation questions. Remember to reuse your original cables and hardware when installing this replacement battery set.

Ready to upgrade your Nexsys Dual 600 with a high-performance UPS battery 4-pack? Purchase now for dependable, long-lasting battery backup and swift shipping.

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

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