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SigmasTek  |  SKU: BW-9100

Invacare R50LX (16 Inch Or Wider) High Performance Wheelchair Replacement Battery 72.06 lb

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New arrival
Sale price $385.99 USD Regular price $427.99
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Factory fresh replacement batteries for Invacare R50LX (16 Inch or wider) wheelchairs
Uses Absorbent Glass Mat (AGM) technology for deep cycle durability
Valve regulated and spill-proof construction for safety and reliability
U.L. recognized and CE certified with a 1-year performance guarantee
Compatible with electric wheelchairs, power chairs, mobility chairs, and scooters
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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 | 55 AH

Terminal Type

Nut & Bolt

Replacement Invacare R50LX (16 Inch or wider) Wheelchair Batteries - Compatible with Invacare R50LX (SP12-55 NB)

Renew the power on your Invacare R50LX (16 Inch or wider) with our replacement Invacare R50LX batteries. These brand new, factory-fresh SP12-55 NB (12 V 55 AH) units are 100% compatible with the Invacare R50LX (16 Inch or wider) model and are engineered to provide reliable, high-performance energy for your mobility needs. Choose a replacement battery that’s built for deep-cycle use and long-term dependability.

Key Specifications

  • Model: SP12-55 NB (12 V 55 AH)
  • Voltage: 12 Volts
  • Capacity: 55 AH (Amp-Hours)
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Designed for Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof
  • Energy Density: 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
  • Configuration Requirement: Invacare R50LX (16 Inch or wider) requires 2 batteries; use existing cables and hardware to connect

Benefits

This replacement battery employs AGM construction for a spill-proof, maintenance-free experience and is optimized for deep-cycle performance. As a high-performance battery tailored to mobility applications, it maintains reliable power delivery throughout discharge cycles and supports longer run times between charges—making it a dependable long-lasting battery for the Invacare R50LX (16 Inch or wider).

Engineered for durability, the valve-regulated design reduces the risk of leaks and contamination while the high power-to-volume ratio delivers superior energy density. Certified to U.L. and CE standards, these SigmasTek batteries offer safety and consistency that you can trust. Installing a matched pair (the R50LX requires two SP12-55 NB units) restores balance and range so your wheelchair performs as intended.

These batteries are ideal for electric wheelchairs, power chairs, mobility chairs, and mobility scooters. Remember to reuse your existing cables and hardware from the original configuration to ensure a secure connection when replacing your batteries.

Upgrade your mobility with confidence—purchase your replacement Invacare R50LX (16 Inch or wider) batteries now. Fast shipping on in-stock items means you’ll be back on the move with a reliable, long-lasting battery soon.

Technical Specifications

Voltage12 Volts
Amp Hours55 AH
Terminal TypeNut & Bolt
Length (in.)9.04
Width (in.)5.45
Height (in.)8.15
Weight (lb.)72.0

Product Highlights

  • Brand Replacement : Invacare R50LX (16
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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