Need to return a product:- Click Here for returns

Need to track your order:- Track here

Check out our new website, faster smarter and easier to use.

CB Range  |  SKU: RBC35-B248

Be350c Apc Back UPS Es Battery, 1 x 12V 3.5Ah

🚀 In stock and ready for shipment from our warehouse. Pickup NOT available for this product
Sale price $26.99 CAD Regular price $29.99
🔋
Note: The 3.5Ah battery will provide approximately 16.67% longer runtime than the standard 3.0Ah version. Despite its higher capacity, it will replace the original battery perfectly and will fit and charge without any issues.
🔔
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 Be350c APC Back-UPS ES – 12V, 3.5Ah (42Wh)

Reliable 12V 3.5Ah sealed lead acid AGM replacement battery for the APC Be350c Back-UPS ES. Designed to deliver dependable backup power, stable performance, and maintenance-free operation to help keep your UPS ready when outages happen.

3.5Ah Capacity 12V Output 42Wh AGM Sealed Lead Acid

Technical Specifications

BrandCB Range
Battery ModelRBC35
ChemistrySealed Lead Acid (AGM)
Voltage12V
Capacity3.5Ah
Energy42Wh
Terminal TypeT1 / F1
Number of Batteries1
Length5.24 inches (133 mm)
Width2.64 inches (67 mm)
Height2.36 inches (60 mm)
Height to Terminal2.6 inches (66 mm)
Gross Weight1.35 Kg (2.98 lbs)
SKURBC35-B248

Key Benefits

  • Reliable Backup Power: Provides 12V 3.5Ah output for dependable UPS support during outages.
  • Maintenance-Free AGM Design: Spill-proof sealed construction for hassle-free use.
  • Direct Compatibility: Designed to fit the APC Be350c Back-UPS ES.
  • Compact Footprint: Sized to fit properly inside compatible UPS battery compartments.
  • Durable Construction: Built for stable, consistent performance and dependable service life.
  • Easy Installation: Re-use your existing connectors and cables; some assembly may be required.
  • Great Value Replacement: High-quality performance at a competitive price point.

Compatible Model

APC Be350c Back-UPS ES

This battery is specifically designed as a replacement for the APC Be350c Back-UPS ES UPS system.

What's Included

1 x 12V 3.5Ah RBC35 Battery Batteries Only UPS Unit Not Included

Warranty & Returns

  • Warranty: 1-Year Warranty
  • Returns: 30-Day Return Policy

Please confirm battery size, terminal type, and UPS model before ordering to ensure proper fitment.

Typical Applications

  • APC Back-UPS ES systems
  • Home office backup power
  • Computer and router protection
  • Small electronics and network devices
  • Emergency backup applications

Performance Highlights

  • Stable 12V Output: Supports consistent UPS operation when mains power fails.
  • 42Wh Energy Capacity: Delivers reliable short-term backup power.
  • AGM Technology: Valve-regulated and sealed for dependable indoor use.
  • T1 / F1 Terminals: Quick and secure connection for compatible setups.
  • Compact & Lightweight: Easy to handle during installation and replacement.

Important Notice

This listing includes 1 battery only. UPS unit, cartridge housing, cables, and connectors are not included unless specifically stated. Please re-use your existing connectors and cables where applicable.

Dependable Replacement Power for Your APC UPS

Choose this CB Range RBC35 12V 3.5Ah AGM battery to restore reliable backup performance to your Be350c APC Back-UPS ES. Built for dependable standby operation, easy installation, and maintenance-free convenience, it is a practical replacement to keep your essential equipment protected.

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?

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

📸 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 IMAGE

Technical Specifications

Be350c APC Back-UPS ES Battery Replacement Kit
Product Information
Product Model Be350c APC Back-UPS ES Battery
Product Brand CB Range
Type UPS Batteries
SKU Number RBC35-B248
Individual Battery Model RBC35
Battery Replacement For Model Be350c APC Back-UPS ES
Individual Battery Amp Hour 3.5Ah
Number of Batteries in Kit 1
Chemistry AGM
Gross Weight (All Batteries) 1.35 Kg / 2.98 Lbs
Voltage 12V
Terminal Type T1
Battery Dimensions
Height 2.36 inches / 60 mm
Height to Top of Terminal 2.6 inches / 66 mm
Length 5.24 inches / 133 mm
Width 2.64 inches / 67 mm
Single 12V 3.5Ah AGM replacement battery kit for APC Back-UPS ES units requiring the RBC35 battery format with T1 terminals.
Latest Update: 14th March 2025

OEM Battery Cross Reference

Device Model Original Battery Replacement
Be350c APC Back-UPS ES RBC35 CB Range RBC35-B248
This replacement battery kit is matched to devices using the original battery reference RBC35. The model shown below is the confirmed match from the supplied data.
Confirmed model coverage

The following device model is confirmed for this battery reference:

Be350c APC Back-UPS ES
Original battery reference

Original battery reference: RBC35.

Match the battery reference and terminal type against the battery removed from the UPS before ordering.

Replacement battery details

Replacement kit: CB Range RBC35-B248.

Battery included: 1 x RBC35.

Battery specification: 12V 3.5Ah AGM with T1 terminal.

Size and fit information

Battery dimensions are 5.24 inches x 2.64 inches x 2.36 inches with a terminal height of 2.6 inches.

Check the installed battery size and terminal layout to confirm physical fit inside the UPS compartment.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.