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SigmasTek  |  SKU: BW-9461

Orthofab/Lifestyles Fortress Wheelchair 1000FS U1 High Performance Replacement Battery 49.45 lb

14% off
New arrival
Sale price $245.99 USD Regular price $285.99
Shipping calculated at checkout.
Factory fresh and brand new for reliable performance
100% compatible with Orthofab/Lifestyles Fortress Wheelchairs 1000FS U1
Absorbent Glass Mat (AGM) technology for deep cycle use
Valve regulated and spill-proof for safe, maintenance-free operation
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.

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Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement Orthofab/Lifestyles Fortress Wheelchairs 1000FS U1 Battery - SP12-35 NB (12V 35AH)

Upgrade your Orthofab/Lifestyles Fortress Wheelchairs 1000FS U1 with this factory-fresh SP12-35 NB replacement battery. Engineered for compatibility and dependable performance, this long-lasting battery gives your 1000FS U1 the reliable power boost it needs. As a high-performance battery option, it provides consistent energy and durability for everyday mobility and heavier-duty applications.

Key Specifications

  • Compatible Model: Orthofab/Lifestyles Fortress Wheelchairs 1000FS U1
  • Battery Model: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt (NB)
  • Technology: Absorbent Glass Mat (AGM)
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated, Spill Proof
  • Energy: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Performance: Performance Guaranteed
  • Brand: SigmasTek
  • Warranty: 1 Year Warranty
  • Notes: Requires reuse of existing cables and hardware from original configuration; unit requires 2 batteries

Benefits

This SP12-35 NB replacement battery combines robust construction with AGM technology to deliver excellent cycle life and reliable output. The valve-regulated, spill-proof design increases safety and reduces maintenance, making it ideal for mobility equipment. As a high-performance battery, it supports the power demands of electric wheelchairs and mobility devices while offering the stability and endurance expected from a long-lasting battery.

The superior power-to-volume ratio and certified manufacturing provide dependable energy density so your 1000FS U1 remains responsive and efficient throughout its duty cycles. The battery’s deep cycle capability ensures it can withstand frequent discharges and recharges, which is essential for users who rely on their wheelchair for daily mobility.

Common applications include electric wheelchairs, power chairs, mobility chairs, and mobility scooters. Because the Fortress Wheelchairs 1000FS U1 requires two SP12-35 NB batteries, these units are intended to function together to deliver balanced performance and extended runtime for everyday use.

Replace your worn battery today—purchase the Orthofab/Lifestyles Fortress Wheelchairs 1000FS U1 SP12-35 NB replacement battery for a high-performance, long-lasting battery backed by a 1 year warranty. Order now to restore reliable mobility and enjoy fast shipping.

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 : Orthofab/Lifestyles Fortress Wheelchairs
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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