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SigmasTek  |  SKU: BW-13409

Amstron AP12-40DG High Performance Replacement Battery 29.14 lb

17% off
Sale price $150.99 USD Regular price $181.99
Shipping calculated at checkout.
High performance 12V 40AH SLA battery for reliable power
NB terminal with high discharge design for efficient energy delivery
Wide operating temperature range ensures durability in various conditions
VRLA sealed technology allows safe use in any position near sensitive equipment
UL certified for guaranteed safety and quality compliance
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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 | 40 Ah

Terminal Type

Nut & Bolt

Amstron AP12-40DG Replacement Battery — Compatible with Amstron AP12-40DG

Replace your worn cell with a reliable Amstron AP12-40DG replacement battery that combines dependable VRLA safety, UL certification, and the performance you expect from a 12V 40AH sealed lead-acid unit. Built to meet or exceed original manufacturer specifications, this battery offers the consistent power and durability required for demanding applications and emergency backup systems.

Key Specifications

  • Brand: Amstron (replacement compatible)
  • Model: AP12-40DG
  • Volts: 12 V
  • Amp Hours: 40 AH
  • Terminal: NB (Nut & Bolt)
  • Technology: VRLA (Valve-Regulated Lead Acid) sealed battery
  • High discharge design and wide operating temperature range
  • Weight: 29.07 Lbs
  • Dimensions: Length 7.76 In × Width 6.5 In × Height 6.69 In
  • Package contains: 1 battery
  • Warranty: 1-year Warranty
  • Certifications: UL (Underwriters Laboratories) certified
  • Shipping: ETD: 3 Business Days; Shipping Methods – UPS Ground and USPS; We ship in 1 business day for all in-stock items
  • Guaranteed compatibility with original battery

Benefits

  • Durability: The sealed VRLA design prevents spills and allows safe use in any orientation, extending installation options and reducing maintenance needs.
  • Long life: Manufactured for a long expected service life, this long-lasting battery is suitable for continuous standby or cyclic use in demanding environments.
  • High performance: Specifically engineered with a high discharge design, this high-performance battery supports short bursts of high current and sustained loads.
  • Typical applications: Ideal for UPS systems, emergency lighting, alarm panels, telecom backups, mobility equipment, and portable tools that require reliable 12V 40AH power.
  • Confidence & safety: UL certification and guaranteed compatibility help ensure a safe, drop-in replacement that aligns with original equipment requirements.
  • Convenience: Packed as a single unit and backed by a 1-year warranty, the AP12-40DG replacement battery makes service replacements fast and reliable.

Ready to replace your aging battery with a trusted, high-performance option? Buy the Amstron AP12-40DG replacement battery today for dependable 12V backup power, fast shipping, and a 1-year warranty — get back to reliable operation with confidence.

Technical Specifications

Voltage12 Volts
Amp Hours40 Ah
Terminal TypeNut & Bolt
Length (in.)7.76
Width (in.)6.5
Height (in.)6.69
Weight (lb.)29.11

Product Highlights

  • Brand Replacement : Amstron AP12-40DG Replacement
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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