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SigmasTek  |  SKU: BW-9763

Fortress Scientific 2200FS U1 Wheelchair High-Performance Replacement Battery 49.45 lb

20% off
New arrival
Sale price $245.99 USD Regular price $307.99
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Factory fresh replacement batteries for Fortress Scientific 2200FS U1 wheelchair
12V 35AH AGM deep cycle batteries with valve regulated, spill-proof design
High energy density for superior power and longer run times
100% compatible; uses existing cables and hardware from original setup
Backed by 1-year warranty and performance guarantee
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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

SP12-35 NB (12V 35AH) Replacement Batteries for Fortress Scientific 2200FS U1 Wheelchair

These brand new replacement SP12-35 NB (12V 35AH) batteries are specially produced to be 100% compatible with the Fortress Scientific 2200FS U1 wheelchair. Factory-fresh and built for deep-cycle performance, these high-performance batteries restore mobility and range while delivering safe, maintenance-free operation. When you require dependable power for mobility equipment, these batteries offer a proven balance of energy density and durability.

Key Specifications

  • Model: SP12-35 NB (12V 35 AH)
  • Compatible with: Fortress Scientific 2200FS U1 (requires 2 batteries)
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Usage: Designed For Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Performance Feature: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Performance: Performance Guaranteed
  • Brand: SigmasTek
  • Terminal: Nut & Bolt
  • Voltage: 12 Volts
  • Capacity: 35 AH

Benefits

These SP12-35 NB batteries are engineered as a long-lasting battery solution for mobility devices. AGM construction and valve-regulated design deliver superior cycle life, excellent charge acceptance, and safe, maintenance-free operation — key advantages for wheelchair users who depend on consistent power day after day. As a high-performance battery option, they maintain steady output during extended discharge and recharging cycles, maximizing run-time for your Fortress Scientific 2200FS U1.

Durability features include spill-proof valve regulation and a design optimized for deep-cycle use, providing resilience against repeated charging and heavy loads. The excellent power-to-volume ratio translates into more usable energy without sacrificing footprint, ideal for compact mobility platforms. Applications span electric wheelchairs, power chairs, mobility chairs, and mobility scooters — anywhere reliable deep-cycle power is required.

These batteries are sold as replacements; please note your wheelchair requires two SP12-35 NB units and that you must reuse existing cables and hardware from the original configuration for proper installation. Backed by U.L. and CE recognition plus a 1 Year Warranty, these units offer assurance and performance for daily mobility needs.

Restore power to your Fortress Scientific 2200FS U1 today — buy this set of SP12-35 NB (12V 35AH) replacement batteries now to enjoy enhanced mobility, dependable performance, and peace of mind.

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 2200FS
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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