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SigmasTek  |  SKU: BW-9226

Invacare TDX SI-HD High Performance Replacement Battery for Wheelchair 36.03 lb

24% off
New arrival
Sale price $209.99 USD Regular price $275.99
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Factory fresh replacement battery for Invacare TDX SI-HD wheelchair
Features Absorbent Glass Mat (AGM) technology for durability
Valve regulated, spill-proof design ensures safety and reliability
Deep cycle design delivers long-lasting power and performance
Compatible with existing cables and hardware, easy to install
In stock

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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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⚠️ 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 | 55 AH

Terminal Type

Nut & Bolt

Replacement Invacare TDX SI-HD Battery — Compatible with Invacare TDX SI-HD

Restore reliable power to your Invacare TDX SI-HD with this factory-fresh replacement battery. Designed to be 100% compatible with the Invacare TDX SI-HD unit, the SP12-55 NB (12 V 55 AH) replacement battery delivers consistent performance and dependable runtime. If you need a replacement battery that combines safety, high performance, and a long service life, this option is built to meet the demands of daily mobility and occasional heavy use.

Key Specifications

  • Model Compatibility: Invacare TDX SI-HD
  • Battery Model: SP12-55 NB
  • Voltage: 12 V
  • Capacity: 55 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Designed for Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof
  • Energy Characteristics: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek

Benefits

  • Durability: The sealed AGM design minimizes maintenance and resists leaks, offering durable, safe operation for everyday mobility demands.
  • Long Life: Specifically crafted for deep cycle use, this long-lasting battery endures repeated charging and discharging while preserving usable capacity.
  • High Performance: Engineered with a high power/volume ratio, this high-performance battery supplies the energy density needed for consistent acceleration, control response, and accessory operation.
  • Quality & Safety: U.L. recognized and CE certified, ensuring adherence to recognized safety and quality standards for mobility batteries.
  • Versatile Applications: Primarily intended for electric wheelchairs, power chairs, mobility chairs, and mobility scooters. It is also an excellent option for compatible UPS backup, emergency power needs, and certain portable tool applications that accept a sealed 12 V, 55 AH battery.
  • Hassle-Free Installation: Install easily using your existing cables and nut & bolt terminals — no special hardware required.
  • New & Guaranteed: Brand new, factory fresh battery with a 1 year warranty and a performance guarantee for confidence with every purchase.

Don’t compromise on power or reliability. Buy this replacement Invacare TDX SI-HD battery now and get a long-lasting battery solution that keeps your mobility device performing at its best. Order today to secure fast shipping and dependable service.

Technical Specifications

Voltage12 Volts
Amp Hours55 AH
Terminal TypeNut & Bolt
Length (in.)9.04
Width (in.)5.45
Height (in.)8.15
Weight (lb.)36.0

Product Highlights

  • Brand Replacement : Invacare TDX SI-HD
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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