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CB Range  |  SKU: SHR3.6-12-ST425

UPS Battery For Cyberpower ST425, 1 X 12v, 3.6ah

🚀 In stock and ready for shipment from our warehouse. Pickup NOT available for this product
Sale price $69.99 CAD Regular price $76.99
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NOTE: This battery does NOT cross to standard 3.2Ah, 3.4Ah, or 3.5Ah batteries. It has a taller and thinner form factor than typical models, so please check the physical dimensions of your original battery carefully.

Both terminals are 0.25 inch (T2) size, which may differ from batteries with smaller T1 terminals.
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Just a Quick Reminder!
Please double-check that the batteries you're ordering match the ones in your unit before completing your purchase.

Please note: We only supply the batteries shown in the images. Product images of devices are shown for reference only.

Battery for CyberPower ST425 UPS – 12V 3.6Ah AGM Replacement Battery (1-Pack)

Keep your UPS system operating reliably with this high-quality 12V 3.6Ah Sealed Lead Acid (AGM) replacement battery designed for the CyberPower ST425 UPS. Engineered for dependable backup performance, this compact and maintenance-free battery provides stable power delivery to help protect computers, networking equipment, and other essential electronics during outages and power fluctuations.

12V Output 3.6Ah Capacity 43.2Wh Energy AGM Sealed Lead Acid

Technical Specifications

BrandCB Range
Battery ModelSHR3.6-12-ST425
Battery TypeSealed Lead Acid (AGM)
Voltage12.0V
Capacity3.6Ah
Energy43.2Wh
Connector TypeT2 (0.250”)
Dimensions4.02" x 1.89" x 2.59"
Metric Dimensions102 x 48 x 66mm
Weight1.35 Kg / 2.98 lbs
Pack Size1 Battery
SKUSHR3.6-12-ST425

Why Choose This ST425 Replacement Battery?

  • Reliable Backup Power: Built to deliver stable and dependable backup energy for CyberPower ST425 UPS systems.
  • Maintenance-Free AGM Technology: Spill-proof sealed AGM construction for safe and hassle-free operation.
  • Compact UPS Fitment: Designed to fit compact UPS battery compartments with ease.
  • Durable Construction: Heavy-duty ABS casing and quality internal components support long service life.
  • Direct Replacement: Engineered specifically for the CyberPower ST425 UPS battery requirements.
  • Trusted Canadian Support: Ships directly from Canada with dependable customer service and support.

Compatible Models

CyberPower ST425 ST425

Please verify your original battery dimensions, voltage, capacity, and terminal type before ordering to ensure proper compatibility.

Typical Applications

  • CyberPower UPS backup systems
  • Computer and workstation protection
  • Networking and modem backup power
  • Home office UPS systems
  • Point-of-sale and monitoring equipment
  • General standby backup power applications

CyberPower ST425 Battery FAQs

  • Is this battery compatible with the CyberPower ST425 UPS?
    Yes. This battery is designed as a direct replacement for CyberPower ST425 UPS systems requiring a 12V 3.6Ah AGM battery with T2 terminals.
  • Does this battery require maintenance?
    No. The AGM sealed lead acid design is maintenance-free and spill-proof.
  • Do I need to reuse my existing UPS wiring?
    Yes. Existing connectors and cables from your UPS must be reused during installation.
  • What terminal type does this battery use?
    This battery uses T2 (0.250”) Fast-on terminals.
  • Where does this battery ship from?
    All products ship directly from Canada with Canadian customer support.

Product Highlights

  • Battery Type: Sealed Lead Acid (AGM)
  • Voltage: 12V
  • Capacity: 3.6Ah
  • Energy: 43.2Wh
  • Terminal Type: T2 (0.250”)
  • Dimensions: 102 x 48 x 66mm
  • Pack Quantity: 1 Battery
  • Application: UPS Backup Power

Important Installation Notes

  • Assembly Required: Existing UPS connectors and wiring must be reused during installation.
  • Verify Specifications: Always confirm battery size, voltage, capacity, and terminal type before ordering.
  • Maintenance-Free Design: No water refilling or routine maintenance required.

Warranty & Returns

  • 1-Year Warranty: Covered against manufacturing defects for dependable peace of mind.
  • 30-Day Return Policy: Return for a full refund if you are not satisfied with your purchase.
  • Canadian Company: Backed by trusted Canadian customer service and support.

Reliable Power for Everyday UPS Protection

Keep your CyberPower ST425 UPS ready for unexpected outages with this dependable 12V 3.6Ah AGM replacement battery. Built for reliable backup performance, compact fitment, and maintenance-free convenience, this battery is an excellent solution for protecting important electronics and maintaining uninterrupted power when it matters most.

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🔋 What’s mAh All About?

mAh stands for milliamp hours—basically, how much "fuel" your battery can hold. A higher or lower mAh than your original battery? No worries! 🙌 It won’t affect charging or operation—just means your device might run a bit longer or shorter between charges. Still 100% compatible. Still 100% awesome. 💪✨

Before ordering please read

Ensure the original battery model number is mentioned in our product description and verify that your device model number is also listed in the description.

How to Look after your new lithium battery!!

See how to look after your battery if its lithium Lithium Care

Delivery and Shipping

See our shipping policy and details at this link Shipping Details

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