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SigmasTek  |  SKU: BW-1385

APC S20BLK High Performance Replacement Battery Set 21.02 lb

15% off
New arrival
Sale price $105.99 USD Regular price $123.99
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Package includes 4 replacement 12V 7.5AH UPS batteries with F2 terminals
AGM technology for superior battery life and reliability
UL certified for safety and quality assurance
Guaranteed fit for APC S20BLK UPS units
1-year warranty and next business day shipping
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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.


Volts & Amps

12 Volts | 7.5 Ah

Terminal Type

F2

SigmasTek 4-Pack Replacement UPS Battery for APC S20BLK

Get dependable backup power for your APC S20BLK with this matched 4-pack replacement UPS battery kit. Engineered with Absorption Glass Mat (AGM) sealed battery technology and UL certified for safety, these batteries meet or exceed the original APC S20BLK specifications to provide reliable runtime and consistent performance. Ideal for routine maintenance or emergency replacements, this kit delivers the quality and longevity needed to protect critical loads when the grid fails.

Key Specifications

  • Package contains: 4 batteries (full set for APC S20BLK)
  • Volts: 12 V
  • Amp Hours: 7.5 AH
  • Terminal: F2
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorption Glass Mat)
  • Warranty: 1-year Warranty
  • Brand: SigmasTek
  • Weight: 21 Lbs
  • Length: 5.95 In
  • Width: 2.56 In
  • Height: 3.7 In
  • Certification: UL (Underwriters Laboratories) certified
  • Shipping Methods: UPS Ground and USPS; in-stock items ship in 1 business day

Benefits

  • Durability: The sealed AGM design protects internal components and reduces the need for maintenance while delivering reliable operation in UPS enclosures.
  • Long life: As a long-lasting battery pack engineered to match APC S20BLK originals, this replacement set helps maintain runtime and safety margins over multiple replacement cycles.
  • High performance: Supports stable voltage output and dependable discharge under load, ensuring uninterrupted operation for servers, routers, and sensitive electronics.
  • Simple installation: Replace batteries in the same original configuration and reuse existing cables and hardware; verify the listed dimensions to ensure fit before ordering.
  • Safety and compliance: UL certification combined with SLA/AGM chemistry makes these batteries appropriate for enclosed and rack-mounted UPS systems.
  • Typical applications: Perfect for UPS systems (APC S20BLK), emergency lighting, telecommunications gear, alarm systems, and any application requiring dependable standby power.
  • Complete kit advantage: Purchasing the full four-battery set delivers matched performance and simplifies maintenance for the APC S20BLK.

If you only require a single replacement battery, please browse UPS Batteries by V and AH to purchase individual units. For assistance with compatibility or installation for your APC S20BLK, contact our customer service team via email, chat, or toll free at (800) 657-1303. Buy this high-performance, long-lasting battery pack now to restore reliable backup power and protect your critical systems.

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)21.0

Product Highlights

  • Brand Replacement : APC S20BLK
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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