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-6295

Simplex Alarm 429115 High Performance Compatible Replacement Battery for Alarm Systems 24.72 lb

23% off
Sale price $122.99 USD Regular price $158.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) Technology for enhanced durability
Maintenance-free design eliminates the need for regular upkeep
Spill-proof construction ensures safe and reliable use
U.L. Recognized and CE Certified for quality assurance
1-year warranty guarantees long-lasting performance
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 | 35 AH

Terminal Type

Nut & Bolt

Replacement Simplex Alarm 429115 Emergency Lighting Battery — Compatible with Simplex Alarm 429115

This replacement battery for the Simplex Alarm 429115 delivers reliable compatibility, consistent performance, and proven reliability when you need it most. Engineered to meet or exceed OEM SLA battery specifications, this replacement battery is an ideal choice for emergency lighting and alarm systems where a dependable, long-lasting battery is critical. Whether you're maintaining building safety systems or stocking spare parts, the Simplex Alarm 429115 replacement offers the confidence of a high-performance battery that installs easily and performs predictably under load.

Key Specifications

  • Model Compatibility: Simplex Alarm 429115
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Battery Type: 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
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Shipping: Orders for in-stock items are typically shipped within 24 hours

Benefits

  • Durability: AGM technology and spill-proof construction deliver a rugged, maintenance-free design that resists vibration and leakage for reliable service life.
  • Long Life: Designed as a long-lasting battery replacement for emergency and safety systems, providing dependable backup power when you need it most.
  • High Performance: Delivers stable voltage under load and rapid recharge characteristics, making it a high-performance battery choice for critical applications.
  • Versatile Applications: Ideal for emergency lighting, security alarms, fire alarms, medical equipment, and consumer electronics—also suitable for UPS systems, emergency power modules, and portable tools that require a robust sealed lead acid solution.
  • Hassle-Free Maintenance: Maintenance-free design reduces upkeep and downtime, keeping your systems operational with minimal intervention.
  • Certified Safety: U.L. recognition and CE certification provide added assurance for code-compliant installations in commercial and residential settings.

Choose this replacement Simplex Alarm 429115 battery when you need a dependable, high-performance battery that matches OEM specifications. If you’re ready to upgrade your backup power or replace a failing cell, buy now and secure a long-lasting battery solution for your safety systems.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)24.7

Product Highlights

  • Brand Replacement : Simplex Alarm 429115
  • Manufacturer: SigmasTek
  • Product Type: Security Alarm
  • 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.