Amstron AP12-55 Compatible Replacement Battery 36.03 lb
— Ready to ship immediately
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.
Amstron AP12-55 Compatible Replacement Battery is backordered and will ship as soon as it is back in stock.
Let customers speak for us
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
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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 | 55 AH
Terminal Type
Nut & Bolt
Amstron AP12-55 Replacement Battery (compatible with Amstron AP12-55)
Designed as a direct-fit replacement for the Amstron AP12-55, this replacement battery delivers reliable power, consistent performance, and full compatibility with Amstron AP12-55 systems. Engineered to meet or exceed OEM SLA specifications, the battery combines advanced Absorbent Glass Mat (AGM) technology with a maintenance-free, spill-proof design for safe, dependable operation in both standby and cyclic applications. If you need a long-lasting battery that preserves equipment uptime, this Amstron AP12-55 replacement battery is an excellent choice.
Key Specifications
- Model Compatibility: Amstron AP12-55
- Replacement Brand: SigmasTek
- Battery Type: Rechargeable Sealed Lead Acid (SLA)
- Technology: Absorbent Glass Mat (AGM)
- Voltage: 12 Volts
- Capacity: 55 AH
- Terminal Type: Nut & Bolt
- Design: Maintenance-Free with Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Note: Meets or exceeds OEM SLA battery specifications
Benefits
This replacement battery is built for durability and a long service life, offering stable performance under repeated charge/discharge cycles. AGM technology ensures high power output and low self-discharge, delivering the reliable performance you expect from a high-performance battery. The maintenance-free, spill-proof construction minimizes service needs and enhances safety across indoor and confined installations.
Ideal for a wide range of applications, this high-performance battery is perfect for UPS and backup power systems, emergency lighting, alarm and security systems, telecommunications equipment, power tools, mobility carts, and other equipment requiring dependable 12V 55AH capacity. The nut & bolt terminals provide secure, low-resistance connections for heavy current demands, while U.L. and CE certifications demonstrate rigorous safety and manufacturing standards.
Replace your worn or aging Amstron AP12-55 with this reliable, long-lasting battery today. Click to purchase this replacement battery and get trusted performance, compatibility, and a 1 year warranty.
Technical Specifications
Product Highlights
- Brand Replacement : Amstron AP12-55 Battery
- Manufacturer: SigmasTek
- Product Type: SLA Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




