ES350U & ES350 APC Back-UPS ES RBC35 Replacement Battery 12V 3.5Ah AGM
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 ES350U & ES350 APC Back-UPS ES – 12V 3.5Ah AGM Replacement (RBC35)
Keep your APC Back-UPS ES system protected with this reliable RBC35 replacement battery featuring maintenance-free AGM technology, dependable 12V output, and direct-fit compatibility for ES350U and ES350 UPS systems.
Technical Specifications
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Why Choose This Product
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- Reliable backup power for APC Back-UPS ES systems during outages.
- Maintenance-free AGM construction with sealed spill-proof design.
- Stable 12V output for dependable UPS operation.
- Direct replacement built to RBC35 specifications.
- Durable design for long service life and energy retention.
- T1 terminals provide straightforward installation.
Compatible Models
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Always confirm your existing battery size, voltage, and terminal type before ordering to ensure correct fitment.
Typical Applications
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- APC Back-UPS ES series units
- Home and office UPS backup systems
- Computer and networking equipment backup
- Security systems and alarm backup power
- Small emergency power applications
Product Highlights
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- Battery Size: 133mm × 67mm × 60mm
- Voltage: 12V
- Capacity: 3.5Ah (42Wh)
- Terminal: T1
- Chemistry: AGM Sealed Lead Acid
- Brand: CB Range
FAQs
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Is this battery compatible with ES350U and ES350 models?
Yes, this battery is designed as a direct replacement for ES350U and ES350 APC Back-UPS ES units. -
Do I need to reuse cables or connectors?
Yes, existing connectors and cables must be reused during installation. -
Is this battery maintenance-free?
Yes, AGM technology provides a sealed maintenance-free design. -
What terminals does this battery use?
This battery uses T1 terminals.
Warranty & Returns
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Includes a 1 Year warranty.
Installation Notes
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This replacement battery requires re-use of your existing connectors and cables. Some minor assembly is required during installation. Ensure correct polarity when connecting the battery to your UPS unit.
Reliable ES350 UPS Battery Replacement
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Built for dependable backup performance and long service life, this RBC35 replacement battery helps keep your ES350U and ES350 APC Back-UPS ES systems protected and operating reliably.
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🔋 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.
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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.
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