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SigmasTek  |  SKU: BW-12979

Sonnenschein A51216G5 High Performance Replacement Battery 12.66 lb

23% off
Sale price $55.99 USD Regular price $72.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced durability and performance
Maintenance-free design eliminates the need for regular upkeep
Spill-proof construction ensures safe and reliable operation
U.L. recognized and CE certified for guaranteed safety and quality
1-year warranty and 100% compatibility with Sonnenschein A51216G5 model
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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 A51216G5 Replacement Battery — Compatible with Sonnenschein A51216G5

Replace worn-out power sources with this reliable Sonnenschein A51216G5 replacement battery, made to meet or exceed OEM specifications. This long-lasting, maintenance-free battery combines AGM technology and certified safety to deliver dependable, high-performance power for your Sonnenschein A51216G5 systems. It’s an ideal choice for emergency lighting, alarms, medical equipment, and other critical applications.

Key Specifications

  • Model: Sonnenschein A51216G5 (Replacement)
  • Compatibility: Sonnenschein A51216G5
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-Free
  • Construction: Spill Proof
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Terminal Type: Nut & Bolt

Benefits

This Sonnenschein A51216G5 replacement battery delivers the durability and performance required by mission-critical systems. The AGM construction makes it spill-proof and maintenance-free, minimizing downtime and reducing installation constraints. As a high-performance battery, it provides consistent voltage and dependable discharge characteristics to maintain functionality in emergency scenarios.

Certified with U.L. recognition and CE marking, this long-lasting battery meets recognized safety standards for commercial and residential use. The 12 Volt, 18 Ah rating paired with nut & bolt terminals ensures secure connections and reliable power delivery across applications such as emergency lighting, security and fire alarm panels, UPS units, home & garden backup devices, consumer electronics, and selected medical equipment.

Supplied brand new and backed by a 1-year warranty, this replacement battery provides a cost-effective and trustworthy alternative to OEM parts while preserving full compatibility with Sonnenschein A51216G5 devices.

Ready to replace your battery? Order this Sonnenschein A51216G5 replacement battery today and secure uninterrupted, long-lasting power for your essential systems.

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 A51216G5 Battery
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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