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SigmasTek  |  SKU: BW-9768

Fortress Scientific 1600ACV-Theradyne U1 Wheelchair High-Performance Replacement Battery 49.45 lb

21% off
New arrival
Sale price $245.99 USD Regular price $309.99
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Factory fresh replacement batteries for reliable performance
100% compatible with Fortress Scientific 1600ACV-Theradyne U1 units
Absorbent Glass Mat (AGM) technology for deep cycle use
Valve regulated, spill-proof design for safety and durability
Includes 1-year warranty for peace of mind
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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

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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

Replacement Fortress Scientific 1600ACV-Theradyne U1 Battery (SP12-35 NB)

Restore dependable power to your Fortress Scientific 1600ACV-Theradyne U1 wheelchair with this factory-fresh replacement battery. Built to meet the original SP12-35 NB specification, this replacement battery delivers consistent runtime, dependable deep-cycle performance, and the reliable safety features modern mobility devices demand. Whether you need a direct swap after end-of-life or want a dependable spare, this high-performance battery helps ensure your mobility equipment remains ready when you are.

Key Specifications

  • Compatible Model: Fortress Scientific 1600ACV-Theradyne U1
  • Replacement Model: SP12-35 NB (12 V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Battery Technology: Absorbent Glass Mat (AGM)
  • Design: Designed for Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Quantity Required: 2 batteries for the Fortress Scientific 1600ACV-Theradyne U1
  • Installation Note: Use all existing cables and hardware from original configuration

Benefits

  • Durability: Tough AGM and valve-regulated design make this battery rugged and maintenance-free, standing up to daily vibration and use in wheelchairs and scooters.
  • Long Life: Specifically designed for deep-cycle usage, the battery provides a long-lasting battery solution for repeated charge/discharge cycles without rapid degradation.
  • High Performance: Optimized power-to-volume ratio delivers excellent energy density so you get maximum runtime in the compact U1 form factor — a true high-performance battery for mobility systems.
  • Safety & Compliance: U.L. recognition and CE certification confirm reliability and safety for medical and mobility applications.
  • Versatile Applications: Ideal for electric wheelchairs, power chairs, mobility chairs and mobility scooters; can also serve in UPS systems, emergency power backups, and portable tools that require 12V 35AH capacity.
  • Simple Installation: Designed to match the SP12-35 NB spec — reuse existing hardware and cabling for a quick, secure installation and immediate restored operation.

Don’t let a weak battery limit your mobility. Purchase this Fortress Scientific 1600ACV-Theradyne U1 replacement battery (SP12-35 NB) now for a reliable, high-performance replacement battery with fast shipping and a 1 year warranty.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)49.4

Product Highlights

  • Brand Replacement : Fortress Scientific 1600ACV-Theradyne
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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