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SigmasTek  |  SKU: BW-2156

APC BACKUPS BK800 UPS High Performance Compatible Replacement Battery Set 16.33 lb

15% off
New arrival
Sale price $88.99 USD Regular price $104.99
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Replacement set with 4 SigmasTek SP6-12HR batteries (6V 12AH)
Perfect for UPS and battery tool applications
Valve regulated, spill-proof for maintenance-free use
High vibration resistance improves durability
Certified quality with 1-year warranty
In stock

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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

6 Volts | 12 Ah

Terminal Type

F2

SigmasTek SP6-12HR Replacement Battery Set for APC BACKUPS BK800

Upgrade your APC BACKUPS BK800 with a reliable, factory-fresh replacement UPS battery set engineered for performance and dependability. This SigmasTek kit is designed to restore full runtime and stability to your UPS unit, delivering consistent power when you need it most. Ideal for homeowners and small businesses, this high-performance UPS battery solution combines low self-discharge and high vibration resistance to ensure long service life and trouble-free operation.

Key Specifications

  • Includes: 4 SigmasTek SP6-12HR batteries
  • Voltage: 6 Volts
  • Capacity: 12 AH
  • High Rate Discharge Design
  • Valve Regulated Spill Proof Construction
  • Low Self-discharge
  • High Vibration Resistance
  • U.L. Recognized and CE Certified
  • Superior Performance
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use all existing cables and hardware from original configuration to connect new UPS batteries
  • Compatible With: APC BACKUPS BK800

Benefits

This replacement UPS battery set for the APC BACKUPS BK800 offers proven durability and reliable performance under demanding conditions. The high rate discharge design is tailored for short bursts of high power draw, making it an excellent choice for UPS applications where rapid response and high output are required. Valve regulated spill proof construction reduces maintenance concerns and simplifies installation, while low self-discharge helps preserve capacity during storage and infrequent use. These features combine to create a long-lasting battery solution you can trust.

Whether protecting critical electronics, supporting an emergency power supply, or powering battery-operated tools, this high-performance UPS battery delivers consistent, dependable energy. The U.L. recognition and CE certification provide added assurance of quality and safety. With high vibration resistance and factory-fresh condition, these batteries are built to withstand the real-world stresses of daily operation, yielding fewer replacements and lower total lifecycle cost.

Technically tested to meet or exceed OEM specifications, this SigmasTek set is an excellent, cost-effective substitute for OEM packs. Because this kit requires reuse of your original cables and hardware, installation is straightforward for technicians and experienced DIYers alike.

Ready to restore full runtime to your APC BACKUPS BK800? Order this long-lasting battery pack today and enjoy fast shipping on in-stock items. Buy now to secure a dependable, replacement UPS battery that keeps your systems protected.

Technical Specifications

Voltage6 Volts
Amp Hours12 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.0
Height (in.)3.7
Weight (lb.)16.32

Product Highlights

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

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