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SigmasTek  |  SKU: BW-13103

Sonnenschein CR121.3 High Performance Compatible Replacement Battery 1.21 lb

13% off
Sale price $25.99 USD Regular price $29.99
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Absorbent Glass Mat (AGM) technology for enhanced performance and safety
Maintenance-free design eliminates the need for regular upkeep
Spill-proof construction ensures safe and mess-free use
U.L. Recognized and CE Certified for reliable quality and compliance
Brand new, factory-fresh battery backed by a 1-year warranty
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

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Volts & Amps

12 Volts | 1.2 Ah

Terminal Type

F1

Sonnenschein CR121.3 Replacement Battery (Compatible with Sonnenschein CR121.3)

The Sonnenschein CR121.3 replacement battery is designed to meet or exceed OEM SLA specifications and deliver reliable, maintenance-free power for a variety of emergency and standby systems. Built using Absorbent Glass Mat (AGM) technology, this replacement battery delivers consistent performance and a spill-proof design—an effective, long-lasting battery option for installations where safety and reliability matter.

Key Specifications

  • Model: Sonnenschein CR121.3 replacement battery
  • Technology: Absorbent Glass Mat (AGM) technology
  • Design: Maintenance-free
  • Construction: Spill proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand new, factory fresh
  • Warranty: 1 year warranty
  • Branding/Identifier: SigmasTek information shown with product
  • Voltage & Capacity: 12 Volts, 1.2 Ah (as listed)

Benefits

This Sonnenschein CR121.3 replacement battery provides durability and dependable reserve capacity in a compact SLA package. The AGM construction ensures a spill-proof, maintenance-free experience while offering excellent performance during discharge events, making it suitable for regular cycling in emergency systems. As a high-performance battery option, the CR121.3 supports fast response and stable voltage under load, keeping critical circuits powered when mains fail.

The combination of UL recognition and CE certification demonstrates compliance with safety standards, making this a trustworthy choice for commercial, residential, and medical applications. Its compact dimensions and factory-fresh condition make it a drop-in replacement for Sonnenschein CR121.3 applications, providing a long-lasting battery solution with predictable life and performance backed by a one-year warranty.

  • Typical applications: Emergency lighting, security systems, fire alarm backups
  • Also suitable for: Consumer electronics, medical equipment, home & garden devices

Secure reliable backup power today—purchase the Sonnenschein CR121.3 replacement battery for a high-performance, long-lasting battery that meets OEM expectations and ships ready to install.

Technical Specifications

Voltage12 Volts
Amp Hours1.2 Ah
Terminal TypeF1
Length (in.)3.78
Width (in.)1.69
Height (in.)2.04
Weight (lb.)1.21

Product Highlights

  • Brand Replacement : Sonnenschein CR121.3 Battery
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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