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Casil 12V 18Ah Deep Cycle Generator Battery – Reliable Replacement for Champion, Generac, Duromax, and Briggs & Stratton Generators AGM SLA Replaces UB12180, FM12180, CP12180, 6FM18

SKU CA12180DCGE

Casil 12V 18Ah Deep Cycle Generator Battery – Reliable Replacement for Champion, Generac, Duromax, and Briggs & Stratton Generators AGM SLA Replaces UB12180, FM12180, CP12180, 6FM18

$48.99 each
in stock
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  • In stock · Order by 3 PM ET, ships same business day from our US warehouse
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Does this fit my model?

Overview

About this battery

  • ? Dependable Generator Power: 12V 18Ah sealed lead-acid battery delivers consistent, long-lasting energy for home and portable generators. Dimensions: 7.13 inches x 2.99 inches x 6.57 inches
  • ⚙️ Deep Cycle Design: Built to handle frequent charging and discharging without performance loss—ideal for backup and continuous use.
  • ? Maintenance-Free AGM Technology: Spill-proof and leak-resistant construction ensures safe, worry-free operation.
  • ? Direct OEM Replacement: Perfect fit for Champion, Generac, Duromax, and Briggs & Stratton generator models. Features nut & bolt terminals with terminal extension hardware securely stored inside the battery case.
  • ? Cross-Compatible: Replaces UB12180, FM12180, CP12180, 6FM18, and other 12V 18Ah sealed lead-acid batteries.
  • ?️ All-Weather Performance: Operates reliably across hot and cold conditions for dependable year-round use.
  • ? Durable & Vibration-Resistant: Designed for generator environments and outdoor power equipment.
  • ⚡ Universal Fit: Works in UPS systems, solar setups, and power inverters requiring 12V 18Ah batteries.
  • ? Easy Installation: Drop-in replacement with nut & bolt terminals, the hardware for the terminal extension is hidden in the battery case.
  • ? Trusted Casil Quality: Manufactured for reliability, safety, and consistent power in demanding

Specifications

Full specifications

Specifications for Casil 12V 18Ah Deep Cycle Generator Battery – Reliable Replacement for Champion, Generac, Duromax, and Briggs & Stratton Generators AGM SLA Replaces UB12180, FM12180, CP12180, 6FM18
BrandCasil
SKUCA12180DCGE
ShippingShips from our US warehouse

Compatibility

Where it’s used

Match voltage, capacity, size and terminal to the battery you are replacing.

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Shipping & warranty

Shipping, returns & warranty

Full policies

Shipping

Order by 3 PM ET and it ships the same business day from our US warehouse.

Shipping details

Returns

Ordered the wrong size? Check the return window and how to send a battery back before you ship it.

Returns policy

Warranty

Keep your order number — the date code on the label shows when the battery was made.

Warranty terms

Buying 25 or more?

Get a written quote with business pricing for installers, facilities and resellers.

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FAQ

Before you swap it

Not sure it matches your old battery? Our team checks part numbers every day.

Call 973-500-6828 All FAQs
Will this fit my device?

Match the voltage, capacity, size and terminal to your old battery, or use the fit check at the top of this page.

How often should it be replaced?

Sealed lead-acid batteries in standby equipment such as alarm panels, fire panels and UPS units are typically replaced every 3–5 years, or sooner if the system reports a low battery or fails its load test. The date code on the label shows when the battery was made.

Can I use a battery with more amp-hours?

Usually, if the voltage, case size and terminals match: more amp-hours means longer runtime. Check that it fits the compartment and that your charger can recharge it in the time your system requires.

How does it ship?

Orders placed by 3 PM ET ship the same business day from our US warehouse. See shipping details.

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