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SigmasTek  |  SKU: BW-4924

APC BACK-UPS ES BE350U UPS High Performance Replacement Battery 2.98 lb

17% off
New arrival
Sale price $28.99 USD Regular price $34.99
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Replacement for APC BACK-UPS ES BE350U UPS model
High rate discharge for emergency power supply needs
Spill-proof, valve regulated, and low self-discharge
UL recognized and CE certified with 1-year warranty
Tested to meet or exceed OEM specifications
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

12 Volts | 3.5 Ah

Terminal Type

F2

SigmasTek SP12-3.5HR Replacement for APC BACK-UPS ES BE350U — Compatible with APC BACK-UPS ES BE350U

Upgrade your APC BACK-UPS ES BE350U with the SigmasTek SP12-3.5HR replacement UPS battery, an ideal solution for restoring reliable protection and steady performance. This brand new 12 Volt 3.5 Ah sealed lead acid battery is designed for high rate discharge applications and offers a cost-effective alternative that maintains OEM-level reliability. Choose a high-performance UPS battery you can trust for critical backup tasks.

Key Specifications

  • Compatible UPS Model: APC BACK-UPS ES BE350U
  • Manufacturer / Brand: SigmasTek (SP12-3.5HR)
  • Voltage: 12 Volts
  • Capacity: 3.5 Ah
  • High Rate Discharge Design: Yes
  • Construction: Valve Regulated Spill Proof (sealed)
  • Low Self-discharge: Yes
  • High Vibration Resistance: Yes
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal Type: F2

Benefits

This long-lasting battery is built for repetitive power delivery and resilience. The high rate discharge capability is ideal for UPS scenarios where short bursts of higher current are required, such as during power outages or device spin-ups. Valve-regulated, spill-proof construction ensures safe, maintenance-free operation, and low self-discharge extends the usable life between charges. These characteristics make it a dependable long-lasting battery option for UPS systems, emergency power backups, and various battery-powered tools.

Safety certifications like U.L. recognition and CE compliance affirm that the battery meets international manufacturing standards. Our technical team tests each unit to ensure it meets or exceeds OEM expectations, so you receive a high-performance UPS battery that restores protection without compromise. In-stock items are typically shipped within 24 hours for quick replacement.

For help choosing or installing a replacement battery for the APC BACK-UPS ES BE350U, contact our customer service at or email us for prompt assistance.

Don’t wait—buy your APC BACK-UPS ES BE350U replacement battery now and get a reliable, long-lasting battery with fast shipping and a one-year warranty.

Technical Specifications

Voltage12 Volts
Amp Hours3.5 Ah
Terminal TypeF2
Length (in.)5.24
Width (in.)2.64
Height (in.)2.36
Weight (lb.)2.98

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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