Chamberlain 1 HP Belt Drive 12V 5Ah garage door opener battery
⚠️ Check Terminal Type
This battery comes with two different terminal sizes. Please inspect your existing battery and select the correct terminal type from the dropdown box below before ordering.
Chamberlain 1 HP Belt Drive Garage Door Opener Battery Replacement – 12V 5Ah AGM CB125
Ensure your garage door opener or home alarm system stays powered with the high-quality CB125 AGM 12V 5Ah replacement battery, the perfect fit for Chamberlain 1 HP Belt Drive Garage Door Openers and a wide range of home security systems. Engineered with premium AGM (Absorbed Glass Mat) technology, this maintenance-free, sealed lead-acid battery delivers reliable power and long-lasting performance for your essential devices.
Power When You Need It Most
Whether it's a power outage or scheduled maintenance, this robust 12V 5Ah battery provides dependable backup power to ensure your garage door or alarm system remains operational. With its superior construction and advanced AGM chemistry, you get stable power output, low internal resistance, and up to 3–5 years of life expectancy under normal conditions.
Product Features:
- Battery Type: Sealed Lead-Acid (AGM)
- Voltage: 12V
- Capacity: 5Ah
- Connector Type: F1 Terminals (3/16" wide) also available F2 Terminal - Also available F2 terminals with 1 F1 converter.
- Dimensions (mm): 90 (L) x 70 (W) x 101 (H), 107mm Height with Terminals
- Weight: 1.6kg / 3.53 lbs
- Maintenance-Free: Yes – can be mounted in any position
- Model Number: CB125-1HPBeltDrive
- Color: Black with F1 terminals
Benefits of the CB125 AGM Battery:
- Extended Runtime: The higher 5Ah capacity provides longer backup power versus standard 4Ah batteries.
- AGM Technology: Offers safe, spill-proof performance with no maintenance required.
- Reliable Construction: ABS plastic casing enhances durability for indoor applications.
- Versatile Use: Perfect for garage door openers, alarm systems, and other backup power needs.
- Simple Installation: Designed for easy fitment and replacement using standard F1 terminals.
Battery Replacement Instructions for Chamberlain Garage Door Openers:
- Disconnect power to opener/operator.
- Using a Phillips head screwdriver, remove the battery cover.
- Disconnect the old battery and safely recycle it.
- Insert the new CB125 battery with terminals facing out.
- Connect the red (+) and black (-) wires from the unit to the battery terminals.
- Ensure the wires are securely seated in the designated channel.
- Replace the battery cover and reconnect power.
Compatibility:
This battery is compatible with a variety of models and applications including garage door openers and alarm systems. It replaces the following models:
Replaces Battery Models: 1240, ABS12-4, BD4-12, CA1240, CT1240, E1240, Exaltor, Exaltor E1250, Exaltor GX-E1240, NP5-12, NX-6, PC1616, PC1832, PC1864, PC580, PC585, PE12v4.5, PS-1240, PX12050, SB1240, SEC1055, SLA4-12, SLA5-12, UB1245, UB1250, UT1240, 041A6357-1
Compatible Applications:
Garage Door Openers: Chamberlain 1 HP Belt Drive, Chamberlain 041A6357-1, Chamberlain 4228, Chamberlain 459950.
Important Notes:
- This battery does not include wires or adapters. Please reuse your existing connectors.
- Always check your original battery's size and terminal type to ensure proper fitment.
- F1 terminals are 3/16" wide. Please verify your connector size before ordering.
- Regular inspections are recommended to prevent premature battery failure.
Peace of Mind Warranty:
30-Day Return & 1-Year Replacement Warranty: Buy with confidence! This product includes a 30-day money-back return policy and a 1-year replacement warranty for manufacturing defects.
Get Reliable Backup Power – Order Now!
Power your garage door opener with the long-lasting CB125-1HPBeltDrive 12V 5Ah AGM Battery. With its high-quality construction and dependable performance, it’s the perfect upgrade or replacement to keep your system running smoothly in any situation.
⚠️ Check Terminal Type
This battery comes with two different terminal sizes. Please inspect your existing battery and select the correct terminal type from the dropdown box below before ordering.
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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
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Delivery and Shipping
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Specifications
| Product Information | |
|---|---|
| Category | Garage Door Opener / Alarm Backup |
| Battery Type | Sealed Lead-Acid (AGM) |
| Voltage | 12V |
| Capacity | 5Ah |
| Terminal Type | F1 (3/16" wide) |
| Dimensions | 90 x 70 x 101mm (107mm with terminals) |
| Weight | 1.6kg / 3.53 lbs |
| Maintenance-Free | Yes |
| Color | Black |
| Model Number | CB125-1HPBeltDrive |
| Fits Brands | |
| Chamberlain | |
| Fits Models | |
| 1 HP Belt Drive, 041A6357-1, 4228 | |
| Fits Battery Models | |
| 1240, ABS12-4, BD4-12, CA1240, CT1240, E1240, Exaltor, Exaltor E1250, Exaltor GX-E1240, NP5-12, NX-6, PC1616, PC1832, PC1864, PC580, PC585, PE12v4.5, PS-1240, PX12050, SB1240, SEC1055, SLA4-12, SLA5-12, UB1245, UB1250, UT1240, 041A6357-1 | |
| We update this list as new information becomes available. See the product description for more details. | |
| Latest Update: July 1, 2025 | |
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