Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-12830

Sonnenschein A512/3.5 S Compatible Replacement Battery 2.98 lb

24% off
Sale price $28.99 USD Regular price $37.99
Shipping calculated at checkout.
Meets or exceeds OEM SLA battery specifications for perfect fit
Absorbent Glass Mat (AGM) technology for reliable performance
Maintenance-free and spill-proof design for hassle-free use
U.L. recognized and CE certified for safety and quality assurance
Includes 1-year warranty and guaranteed 100% compatibility
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

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


Volts & Amps

12 Volts | 3.5 Ah

Terminal Type

F1

Sonnenschein A512/3.5 S Replacement Battery — Compatible with Sonnenschein A512/3.5 S

Replace your worn or failing unit with this reliable Sonnenschein A512/3.5 S replacement battery engineered to meet or exceed OEM SLA specifications. Designed for dependable performance in emergency lighting and critical standby applications, this high-performance battery delivers consistent power, proven compatibility with Sonnenschein A512/3.5 S systems, and the reassurance of factory-fresh construction and certifications.

Key Specifications

  • Model: Sonnenschein A512/3.5 S (Replacement)
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 3.5 Ah
  • Terminal Type: F1
  • 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

Benefits

This Sonnenschein A512/3.5 S replacement battery is built for durability and long life. AGM technology provides superior vibration resistance and excellent charge acceptance, making it a long-lasting battery choice for demanding environments. The maintenance-free, spill-proof construction reduces upkeep and risk, while U.L. and CE certifications ensure safety and regulatory compliance.

As a high-performance battery, it offers reliable standby power for emergency lighting systems, ensuring lights remain operational during outages. It is equally well-suited for security alarms, fire alarm systems, medical equipment, and a wide range of consumer electronics where dependable backup power is essential. The compact 12V / 3.5Ah format and F1 terminal make installation straightforward in many existing Sonnenschein setups.

The combination of OEM-level compatibility and a factory-new condition gives you confidence that this replacement battery will integrate seamlessly with your equipment and restore full functionality. Whether you need a single unit or want to stock replacement cells for ongoing maintenance, this Sonnenschein A512/3.5 S is a cost-effective way to maintain uptime and safety.

Ready to upgrade to a reliable, long-lasting battery? Purchase this Sonnenschein A512/3.5 S replacement battery today to restore peak performance and ensure continuous protection for your emergency lighting and critical systems.

Technical Specifications

Voltage12 Volts
Amp Hours3.5 Ah
Terminal TypeF1
Length (in.)5.24
Width (in.)2.64
Height (in.)2.36
Weight (lb.)2.98

Product Highlights

  • Brand Replacement : Sonnenschein A512/3.5 S
  • Manufacturer: SigmasTek
  • Product Type: Emergency Power
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.