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SigmasTek  |  SKU: BW-12742

Sonnenschein A512/550A High-Performance Replacement Battery 36.03 lb

23% off
Sale price $209.99 USD Regular price $271.99
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Compatible replacement for Sonnenschein A512/550A emergency lighting battery
Uses Absorbent Glass Mat (AGM) technology for enhanced performance
Maintenance-free and spill-proof design for safe, hassle-free use
U.L. recognized and CE certified for quality and safety assurance
Comes brand new with a 1-year warranty for reliable longevity
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 55 AH

Terminal Type

Nut & Bolt

Sonnenschein A512/550A Replacement Battery (Compatible with Sonnenschein A512/550A)

Restore dependable backup power with this replacement battery engineered for the Sonnenschein A512/550A model. Designed to meet or exceed OEM SLA specifications, this high-performance battery uses AGM technology to deliver reliable, maintenance-free energy for emergency lighting and other critical systems. If you need a long-lasting battery solution that combines safety certifications and factory-fresh condition, the Sonnenschein A512/550A replacement offers a robust, ready-to-install option.

Key Specifications

  • Compatible Model: Sonnenschein A512/550A
  • Brand: SigmasTek
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-Free
  • Construction: Spill Proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Voltage: 12 Volts
  • Capacity: 55 AH
  • Terminal Type: Nut & Bolt
  • Warranty: 1 Year

Benefits

Built for durability and dependable performance, this Sonnenschein A512/550A replacement battery is a long-lasting battery option for emergency lighting, security systems, and other standby power applications. The AGM construction ensures low internal resistance and excellent deep-cycle capability, while the maintenance-free, spill-proof design reduces service requirements and protects sensitive equipment from leakage-related damage.

As a high-performance battery, it supports stable voltage delivery and efficient charge acceptance—important for UPS systems, emergency power panels, and medical equipment that require consistent backup power. The nut & bolt terminals provide a secure connection ideal for fixed installations where vibration resistance and long-term stability are necessary.

This replacement battery is factory fresh and certified to meet safety standards (U.L. recognized and CE certified), offering installers and facility managers confidence in both quality and compatibility. Typical applications include emergency lighting modules, UPS backup power, fire and security alarm systems, and other critical infrastructure where downtime is not an option.

Don’t wait until your backup system fails—buy the Sonnenschein A512/550A replacement battery now to ensure uninterrupted protection with a reliable, high-performance, long-lasting battery backed by a one-year warranty.

Technical Specifications

Voltage12 Volts
Amp Hours55 AH
Terminal TypeNut & Bolt
Length (in.)9.04
Width (in.)5.45
Height (in.)8.15
Weight (lb.)36.0

Product Highlights

  • Brand Replacement : Sonnenschein A512/550A Battery
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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