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SigmasTek  |  SKU: BW-12760

Sonnenschein A212/3.5S High Performance Replacement Battery 3.5 lb

9% off
Sale price $29.99 USD Regular price $32.99
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Replacement battery meets or exceeds OEM Sonnenschein A212/3.5S specifications
Uses advanced Absorbent Glass Mat (AGM) technology for reliable performance
Maintenance-free and spill-proof design for safe, hassle-free use
U.L. Recognized and CE Certified for quality and safety assurance
Includes a 1-year warranty and arrives brand new, factory fresh
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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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Volts & Amps

12 Volts | 5.5 Ah

Terminal Type

F2

Sonnenschein A212/3.5S Replacement Battery — Compatible Sonnenschein A212/3.5S

This Sonnenschein A212/3.5S replacement battery is engineered for dependable compatibility, consistent performance, and proven reliability. Designed to meet or exceed the OEM SLA battery specifications, this high-quality, replacement battery provides the stable power your emergency lighting and critical systems require. Whether you are servicing emergency fixtures, security systems, or medical backup units, this Sonnenschein A212/3.5S model offers a maintenance-free solution you can trust as a high-performance battery and a long-lasting battery alternative to original parts.

Key Specifications

  • Model: Sonnenschein A212/3.5S (Replacement)
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah
  • Terminal Type: F2
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compliance: Meets or exceeds OEM SLA battery specifications

Benefits

  • Durability: AGM construction and spill-proof design provide robust mechanical strength and reduced risk of leakage or acid spill, making this replacement battery ideal for demanding environments.
  • Long Life: Built as a long-lasting battery option, the AGM chemistry and quality manufacturing help deliver stable capacity over repeated charge/discharge cycles, reducing the frequency of replacements.
  • High Performance: As a high-performance battery, it supports reliable discharge under load for emergency lighting, alarms, and critical systems. The SigmasTek build meets strict U.L. and CE standards to ensure consistent output.
  • Maintenance-Free Convenience: AGM technology eliminates the need for regular electrolyte checks and maintenance, saving time for technicians and facility managers.
  • Versatile Applications: Ideal for emergency lighting, security alarms, fire alarms, home & garden devices, consumer electronics, and medical equipment. Also recommended for UPS backups, emergency power systems, and portable tools where dependable 12V power is required.
  • OEM Compatibility: Guaranteed 100% compatibility with the Sonnenschein A212/3.5S model — a straightforward swap that restores performance without reconfiguration.

Ready to replace your old cell with a verified Sonnenschein A212/3.5S replacement battery? Order now to secure a brand new, factory fresh, high-performance battery backed by a 1 year warranty. Click to purchase and restore dependable power to your equipment today.

Technical Specifications

Voltage12 Volts
Amp Hours5.5 Ah
Terminal TypeF2
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)3.5

Product Highlights

  • Brand Replacement : Sonnenschein A212/3.5S Battery
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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