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-16033

BS B12-3 Compatible Replacement Battery 2.98 lb

26% off
Sale price $28.99 USD Regular price $38.99
Shipping calculated at checkout.
Compatible replacement for BS Battery B12-3 with exact OEM specifications
Brand new, factory fresh sealed lead acid battery for reliable performance
Includes minimum one-year warranty for peace of mind
UL listed for safety and quality assurance
Ships within 24 hours, ensuring fast delivery and availability
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 | 3.5 Ah

Terminal Type

F1

BS Battery B12-3 Replacement Battery — Compatible with BS Battery B12-3

This BS Battery B12-3 replacement battery is engineered for reliable compatibility, superior performance, and proven reliability. Designed to meet or exceed the OEM SLA battery specifications, this brand new, factory fresh sealed lead acid (SLA) unit delivers dependable power for your critical applications. If you need a trustworthy replacement battery that offers consistent output and peace of mind, the SigmasTek BS Battery B12-3 compatible pack provides excellent value, fast shipping, and a minimum one year warranty.

Key Specifications

  • Compatible Model: BS Battery B12-3
  • Brand: SigmasTek
  • Chemistry: Rechargeable Sealed Lead Acid (SLA)
  • Voltage: 12 Volts
  • Capacity: 3.5 Ah
  • Terminal Type: F1
  • Condition: Brand New, Factory Fresh
  • Warranty: Minimum 1 Year Warranty
  • Safety Listings: UL Listed
  • Meets/Exceeds: OEM SLA battery specifications
  • Availability: In stock, ships within 24 hours

Benefits

Choose this high-performance battery replacement when you require a durable, long-lasting battery that stands up to daily use. The BS Battery B12-3 replacement battery is built to deliver stable output and reliable recharge cycles, making it an excellent long-lasting battery option for small UPS systems, emergency lighting, security systems, alarm panels, and portable equipment. As a maintenance-friendly SLA design, it reduces downtime and the need for frequent replacement while delivering consistent voltage under load.

This high-performance battery is suitable for a wide range of applications including uninterruptible power supplies (UPS), emergency power backups, security and alarm systems, medical devices, and light-duty power tools that specify a 12V 3.5Ah SLA. Its UL listing and factory-fresh condition mean you get a safe, certified replacement battery that meets industry standards and provides dependable performance when you need it most.

Backed by a one-year warranty and industry-standard safety listing, this SigmasTek-compatible BS Battery B12-3 offers the reassurance of a quality product at a competitive price. If you need assistance choosing the right BS Battery replacement SLA batteries, customer service is available by phone or email.

Ready to upgrade? Buy your BS Battery B12-3 replacement battery today to secure a high-performance, long-lasting battery at the best price. Order now and enjoy fast shipping and reliable power.

Technical Specifications

Voltage12 Volts
Amp Hours3.5 Ah
Terminal TypeF1
Length (in.)5.24
Width (in.)2.64
Height (in.)2.36
Weight (lb.)2.98

Product Highlights

  • Brand Replacement : BS Battery B12-3
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • 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.