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SigmasTek  |  SKU: BW-5376

Best Power BAT-0058 UPS High Performance Replacement Battery 12.66 lb

22% off
New arrival
Sale price $55.99 USD Regular price $71.99
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Durable AGM technology for high performance and longevity
High rate discharge supports quick energy delivery
Maintenance-free and spill proof for leak-free use
U.L. Recognized, CE Certified, and brand new with warranty
Ideal replacement for UPS and emergency power supplies
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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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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.


Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

Best Power BAT-0058 Replacement Battery — Compatible with Best Power BAT-0058

This replacement UPS battery is specifically engineered for the Best Power BAT-0058, delivering reliable compatibility, steady performance, and the peace of mind you need for critical backup systems. Designed to meet or exceed the OEM SLA battery specifications, this high-performance UPS battery provides maintenance-free operation and dependable power delivery for emergency power applications and battery-powered tools. Whether you are replacing a single module or stocking spares, this long-lasting battery option ensures your Best Power BAT-0058 UPS remains fully operational when it matters most.

Key Specifications

  • Compatible UPS Model: Best Power BAT-0058
  • Technology: Absorbent Glass Mat (AGM)
  • Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free Design with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand/Replacement Manufacturer: SigmasTek (replacement for Best Power)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt

Benefits

This replacement UPS battery offers robust durability and dependable long service life for your Best Power BAT-0058 UPS. Built with AGM construction and a high rate discharge profile, it is tailored for short-duration, high-power demands common in uninterruptible power supply applications. The maintenance-free, spill-proof design reduces upkeep and installation risk, while U.L. and CE recognition confirm a high standard of safety and reliability.

As a high-performance UPS battery, it supports:

  • Uninterruptible Power Supply (UPS) units that require OEM-level replacement parts
  • Emergency power systems where immediate, reliable backup is essential
  • Battery-powered tools and equipment that draw high current for short bursts

Installation is straightforward for technicians familiar with Best Power BAT-0058 service procedures. The Nut & Bolt terminal offers secure, stable connections suitable for high-current applications, and the SigmasTek replacement meets the physical and electrical expectations of users seeking a long-lasting battery solution.

Ready to restore dependable backup power? Purchase this replacement UPS battery for your Best Power BAT-0058 today and secure a high-performance, long-lasting battery with a 1-year warranty and factory-fresh condition.

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

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