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SigmasTek  |  SKU: BW-15739

BS B12-40 High Performance Replacement Battery 29.14 lb

22% off
Sale price $150.99 USD Regular price $192.99
Shipping calculated at checkout.
Compatible replacement for BS Battery B12-40 with 100% OEM specification match
Brand new, factory fresh sealed lead acid battery for reliable performance
UL listed for safety and quality assurance
Includes minimum one-year warranty for peace of mind
Fast shipping within 24 hours with stock readily available
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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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

BS Battery B12-40 Replacement Battery — Compatible with BS Battery B12-40

The BS Battery B12-40 replacement battery offers dependable compatibility, strong performance, and reliable construction for your BS Battery B12-40 device. Supplied brand new and factory fresh, this rechargeable Sealed Lead Acid (SLA) replacement battery meets or exceeds OEM SLA battery specifications and is intended to provide the consistent, long-lasting battery power required for demanding applications.

Key Specifications

  • Model: BS Battery B12-40 (Replacement)
  • Compatible Model: BS Battery B12-40
  • Chemistry: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: UL Listed
  • Condition: Brand New, Factory Fresh
  • Warranty: Minimum of 1 Year Warranty
  • Supplier/Brand: SigmasTek (as listed)
  • Voltage: 12 Volts
  • Capacity: 40 Ah
  • Terminal Type: Nut & Bolt

Benefits

This replacement battery is crafted to be durable and maintenance-free, helping you avoid the routine service requirements of older battery types. The AGM construction improves vibration resistance and internal gas recombination, contributing to a longer service life and fewer replacements over time. With UL listing, the pack adheres to recognized safety standards for peace of mind in both residential and commercial settings.

As a high-performance battery option, the BS Battery B12-40 delivers consistent output and dependable recharge cycles—making it suitable for continuous duty or standby applications. Its maintenance-free, spill-proof design simplifies handling and installation, and contributes to a long-lasting battery experience in typical applications.

Common uses include UPS backups, emergency lighting and power, security systems, medical equipment, power tools, and other devices that rely on trusted battery backup. Whether you need a dependable replacement battery for everyday use or an emergency reserve, this 12 Volt 40 Ah SLA battery is designed to meet those demands.

Need help before purchasing? Customer service is available at 1 or by email to answer questions. Buy your BS Battery B12-40 replacement battery with confidence today—secure a long-lasting battery at a competitive price and benefit from fast shipping and a minimum 1 year warranty.

Click to purchase and get a high-performance battery replacement that ensures reliable, long-lasting battery power.

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 : BS Battery B12-40
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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