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-13435

Amstron AP12-33G High Performance Replacement Battery 24.72 lb

26% off
Sale price $122.99 USD Regular price $166.99
Shipping calculated at checkout.
High performance 12V 35AH capacity for reliable power
VRLA sealed technology allows safe operation in any position
NB terminal design ensures secure and easy connections
Wide operating temperature range for versatile use
UL certified for quality, safety, and durability assurance
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

Amstron AP12-33G Replacement Battery — Compatible with Amstron AP12-33G

The Amstron AP12-33G replacement battery is a reliable, high-quality option engineered to match or exceed the original Amstron AP12-33G specifications. This long-lasting battery is designed for dependable standby and cyclic use, providing consistent power in critical situations. With VRLA sealed construction and UL certification, the Amstron AP12-33G offers both safety and performance for systems that cannot afford downtime.

Key Specifications

  • Brand: Amstron
  • Model: AP12-33G
  • Type: Valve-Regulated Lead Acid (VRLA) Sealed Battery Technology
  • Certification: UL (Underwriters Laboratories) certified
  • Volts: 12 V
  • Amp Hours: 35 AH
  • Terminal: NB (Nut & Bolt)
  • Weight: 24.7 Lbs
  • Length: 7.72 In
  • Width: 5.14 In
  • Height: 6.14 In
  • Design: High discharge design
  • Operating Range: Wide operating temperature range
  • Package contains: 1 battery
  • Guaranteed compatibility with original battery
  • Warranty: 1-year Warranty
  • ETD: 3 Business Days
  • Shipping Methods: UPS Ground and USPS
  • Processing: We ship in 1 business day for all in-stock items

Benefits

  • Durability: VRLA sealed design minimizes maintenance and prevents acid leakage, resulting in long-term, trouble-free reliability across installations.
  • Long Life: Purpose-built to be a long-lasting battery, it withstands repeated charge cycles and prolonged standby periods for dependable backup performance.
  • High Performance: Capable of high discharge operation, this high-performance battery supports systems that require rapid energy delivery during emergencies.
  • Safety & Certification: UL certification gives added assurance for safe operation near people and electronics; sealed construction allows flexible mounting positions.
  • Typical Applications: Ideal replacement for UPS systems, emergency lighting, fire & security alarms, telecom backup, and other essential equipment where reliability matters.
  • Compatibility & Ease: Guaranteed compatibility with the Amstron AP12-33G model and NB terminals make installation straightforward and dependable.
  • Fast Support: Includes a 1-year warranty and fast shipping options for quick restoration of critical systems.

Don’t wait to restore dependable backup power—buy the Amstron AP12-33G replacement battery today and benefit from a robust, high-performance, long-lasting battery backed by rapid shipping and warranty protection.

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 : Amstron AP12-33G Replacement
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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.