UPS Battery For Cyberpower ST425, 1 X 12v, 3.6ah
Both terminals are 0.25 inch (T2) size, which may differ from batteries with smaller T1 terminals.
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.
Technical Specifications
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
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.
Want Instant Shipping Costs?
Want Instant Shipping Costs?
🚚 Instant Shipping Costs?
It’s super simple! Just add the product you want to your cart, enter the quantity and your postal code, and you'll instantly see real-time shipping rates for all in-stock items. Fast, easy, and totally hassle-free!
💡 Shipping heavy or bulk items?
If your order includes multiple heavy products, we recommend requesting a custom quote — we may be able to arrange a better rate with a transport truck!
Please note: We reserve the right to send heavier items by transport truck if the carrier's maximum weight per package is exceeded or if we consider it too risky to place with a courier due to the possibility of damage occurring.
🔋 What’s mAh All About?
🔋 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
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!!
How to Look after your new lithium battery!!
See how to look after your battery if its lithium Lithium Care
Delivery and Shipping
Delivery and Shipping
See our shipping policy and details at this link Shipping Details
ADVISORY:- ABOUT OUR IMAGES
📸 Send Us Your Battery Image
Not sure which replacement battery you need? Just snap a Photo / Video of your current battery and send it our way! Our team will quickly identify the exact match and recommend the perfect replacement model — no guesswork, no hassle.
🔍 Fast, Expert Assistance
We’ve helped thousands of customers find the right battery — let us do the same for you. Whether it’s for an alarm system, emergency light, or industrial equipment, we’ve got you covered.
📤 Click below to post your image and get started:
POST YOUR IMAGEPayment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.






