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SigmasTek  |  SKU: BW-12987

Sonnenschein A212/12G5 High Performance Replacement Battery 12.66 lb

22% off
Sale price $55.99 USD Regular price $71.99
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Meets or exceeds OEM SLA battery specifications for reliable performance
Absorbent Glass Mat (AGM) technology ensures leak-proof and safe operation
Maintenance-free design reduces upkeep and extends battery life
U.L. recognized and CE certified for safety and quality assurance
Includes 1-year warranty for peace of mind and product confidence
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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 | 18 Ah

Terminal Type

Nut & Bolt

Sonnenschein A212/12G5 Replacement Battery - Compatible with Sonnenschein A212/12G5

When you need a reliable, drop-in replacement for the Sonnenschein A212/12G5, choose this high-performance battery engineered for compatibility, safety, and dependable operation. Built to meet or exceed OEM SLA specifications, the Sonnenschein A212/12G5 replacement offers a maintenance-free, spill-proof design that supports emergency lighting, alarm systems, medical devices, and other critical applications requiring a long-lasting battery solution.

Key Specifications

  • Model: Sonnenschein A212/12G5 (Replacement)
  • Brand (original compatibility): Sonnenschein
  • Replacement Brand: SigmasTek
  • 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
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt

Benefits

Constructed with AGM technology and rated by UL and CE, this Sonnenschein A212/12G5 replacement battery delivers rugged reliability and safe handling. As a high-performance battery, it provides consistent power delivery and efficient recharge, making it ideal for systems that cannot tolerate downtime. The maintenance-free, spill-proof design reduces the need for periodic servicing and helps protect equipment and personnel from accidental leaks.

Designed for a wide range of applications, this long-lasting battery excels in emergency lighting, security and fire alarm systems, medical equipment, and consumer electronic backup. It is equally appropriate for UPS systems, emergency power packs, and portable tools that require steady, dependable output. The secure nut & bolt terminals ensure a solid electrical connection in racks and enclosures, and the brand-new, factory-fresh condition ensures optimal shelf life and performance from day one.

Backed by a 1 year warranty, this Sonnenschein-compatible replacement battery is a cost-effective way to maintain uninterrupted operation of your critical systems while enjoying the peace of mind that comes with certified safety and proven technology.

Replace your Sonnenschein A212/12G5 today—order this long-lasting, high-performance replacement battery now and keep your systems running when it counts.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)12.65

Product Highlights

  • Brand Replacement : Sonnenschein A212/12G5 Battery
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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