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SigmasTek  |  SKU: BW-4919

CyberPower CPS300SL Compatible SLA High Performance Replacement Battery 2.98 lb

12% off
New arrival
Sale price $28.99 USD Regular price $32.99
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Replacement battery for CyberPower CPS300SL UPS unit
High rate discharge for peak power needs
Valve regulated, spill-proof design ensures safety
Low self-discharge and high vibration resistance
Certified by U.L. and CE 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

12 Volts | 3.5 Ah

Terminal Type

F2

SigmasTek SP12-3.5HR Replacement Battery — Compatible with CyberPower CPS300SL UPS

Protect your CyberPower CPS300SL with a reliable SigmasTek SP12-3.5HR replacement UPS battery. This factory-fresh, high-performance UPS battery is engineered to provide dependable short-term power for critical devices. For safe and effective installation, please reuse all existing cables and hardware from your original battery setup. This replacement offers a cost-effective way to restore runtime and maintain uninterrupted protection.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-3.5HR
  • Voltage: 12 Volts
  • Capacity: 3.5 AH
  • High Rate Discharge Design
  • Valve Regulated Spill Proof Construction
  • Low Self-discharge
  • High Vibration Resistance
  • U.L. Recognized
  • CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Designation: F2SLA

Benefits

This replacement UPS battery offers strong benefits for demanding backup scenarios. Its high rate discharge capability supplies the immediate power required during outages, while valve-regulated, spill-proof construction reduces maintenance and improves safety. The low self-discharge characteristic ensures the battery retains charge during storage, making it a reliable long-lasting battery for standby use. High vibration resistance increases durability in mobile or industrial settings.

Common applications include Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools—making this SigmasTek battery a versatile solution for home and business continuity plans. Certified by UL and CE, and delivered brand new, each battery is tested by our technical team to meet or exceed OEM requirements so your CPS300SL receives trusted replacement power.

Replace your CyberPower CPS300SL battery today with confidence. Order now for quick shipping and enjoy the reassurance of a 1 year warranty on a reliable, high-performance UPS replacement battery.

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

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