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SigmasTek  |  SKU: BW-13421

Simplex Simplex-4208A Compatible Replacement Battery 24.72 lb

19% off
Sale price $122.99 USD Regular price $151.99
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High performance 12V 35AH 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 battery technology allows safe operation in any position
UL certified for guaranteed safety and quality compliance
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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 | 35 AH

Terminal Type

Nut & Bolt

Simplex simplex-4208A Replacement Battery (Compatible with simplex-4208A)

Get dependable power for your Simplex systems with the Simplex simplex-4208A replacement battery. Designed for direct compatibility with the simplex-4208A model, this sealed lead acid unit delivers reliable performance, safety, and a long expected service life. Ideal for backup and mission-critical applications, this replacement battery restores consistent, professional-grade power where you need it most.

Key Specifications

  • Brand: Simplex
  • Model: simplex-4208A (replacement battery compatible with simplex-4208A)
  • Type: SLA (Sealed Lead Acid) / VRLA (Valve-Regulated Lead Acid)
  • 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
  • Technology: VRLA sealed battery technology (safe to operate in any position)
  • Certifications: UL (Underwriters Laboratories) certified
  • Package contains: 1 battery
  • Warranty: 1-year Warranty
  • Shipping: ETD 3 Business Days; Shipping Methods – UPS Ground and USPS; We ship in 1 business day for all in-stock items
  • Compatibility: Guaranteed compatibility with original battery; meets or exceeds original manufacturer specifications

Benefits

  • Dependable Durability: The VRLA construction and high discharge design make this replacement battery a rugged, maintenance-free choice that resists leaks and vibration.
  • Extended Lifespan: Engineered as a long-lasting battery, it provides sustained performance over many cycles, reducing the need for frequent battery changes.
  • High-Performance Capability: Providing 12 V and 35 AH, this high-performance battery handles demanding loads and provides reliable power for continuous or peak-use scenarios.
  • Wide Temperature Tolerance: Built to operate across a broad temperature range, it performs reliably in diverse environments—from controlled interiors to challenging industrial spaces.
  • Safety and Certification: UL certification and sealed VRLA technology ensure safe use near people and sensitive components, making it suitable for commercial and residential installations.
  • Ideal Applications: Well-suited for fire and safety systems, UPS backups, emergency lighting, security systems, and power tools that require a consistent and trustworthy replacement battery.
  • Simple Installation: NB terminal configuration and guaranteed compatibility with the original simplex-4208A model make installation quick and straightforward.

Replace your failing unit now — purchase the Simplex simplex-4208A replacement battery to enjoy fast, reliable power with UL certification and a 1-year warranty. Order today for quick shipping and restore dependable operation to your equipment.

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 : Simplex Simplex-4208A Replacement
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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