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SigmasTek  |  SKU: BW-4252

APC BACK-UPS ES BK350 UPS Compatible Replacement Battery 5.25 lb

15% off
New arrival
Sale price $33.99 USD Regular price $39.99
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Absorbent Glass Mat (AGM) technology for enhanced durability
High rate discharge design supports emergency power needs
Maintenance-free and spill-proof construction for safety
U.L. recognized and CE certified for guaranteed quality
1-year warranty ensures reliable, factory-fresh performance
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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

Replacement APC BACK-UPS ES BK350 Battery — Compatible with APC BACK-UPS ES BK350

If you need a dependable replacement for your APC BACK-UPS ES BK350, this replacement UPS battery is engineered to meet or exceed the original SLA specifications for consistent performance and compatibility. It’s a high-performance UPS battery designed to restore backup runtime and reliability for home or small-office UPS systems without the hassle of frequent maintenance.

Key Specifications

  • Absorbent Glass Mat (AGM) Technology
  • High Rate Discharge Design
  • Maintenance-Free Design with Spill Proof Construction
  • U.L. Recognized and CE Certified
  • Brand New, Factory Fresh
  • 1 Year Warranty
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal: F2
  • Compatible Model: APC BACK-UPS ES BK350
  • Meets/Exceeds OEM SLA battery specifications

Benefits

Built for robust reliability, this replacement battery delivers long life and dependable performance. The AGM design ensures vibration resistance and secure electrolyte containment, making it maintenance-free and spill-proof for worry-free installation and operation. As a long-lasting battery choice, it reduces the frequency of replacements compared to older technologies and helps protect your investment in UPS hardware.

This high-performance UPS battery is especially effective for UPS applications like the APC BACK-UPS ES BK350 where rapid discharge capacity is needed during an outage. Use it for emergency power supply systems, for powering battery-operated tools during short bursts, or to provide graceful shutdown time for servers, routers, and home office equipment. It restores the integrity of your UPS backup so you can maintain uptime and prevent data loss.

Certified by U.L. and CE and shipped factory fresh under a one-year warranty, this replacement battery is a cost-effective way to regain the performance of your APC BACK-UPS ES BK350. Whether replacing an old cell or keeping a spare on hand, this battery is designed to match OEM performance without compromise.

Don’t wait for the next outage—order this replacement UPS battery now to get a high-performance, long-lasting battery compatible with your APC BACK-UPS ES BK350.

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)5.25

Product Highlights

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

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