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SigmasTek  |  SKU: BW-9631

Invacare Pronto M50 & M51 High Performance Wheelchair Replacement Battery 49.45 lb

17% off
New arrival
Sale price $245.99 USD Regular price $297.99
Shipping calculated at checkout.
Factory fresh replacement batteries for Invacare Pronto M50 & M51 wheelchairs
100% compatible with original Invacare Pronto M50 & M51 units
Absorbent Glass Mat (AGM) technology for deep cycle performance
Valve regulated, spill-proof design for safe and reliable use
Includes 1 year warranty and is U.L. recognized and CE certified
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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

Replacement Invacare Pronto M50 & M51 Battery - SP12-35 NB (12 V 35 AH)

Get reliable power for your Invacare Pronto M50 & M51 mobility device with this factory-fresh replacement battery set. Engineered to be 100% compatible with Invacare Pronto M50 & M51 units, these batteries provide the performance and dependability you need for everyday use. The SP12-35 NB cells offer consistent deep cycle performance and come backed by a one-year warranty for added confidence.

Key Specifications

  • Battery Model: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Quantity Required: 2 batteries
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Designed For Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • 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
  • Terminal Type: Nut & Bolt
  • Note: Use all existing cables and hardware from your original configuration to connect the new batteries

Benefits

These replacement batteries are crafted to provide durable, long-lasting battery life for mobility devices. The AGM and valve-regulated design ensure maintenance-free operation and enhanced safety with spill-proof construction, making them ideal for enclosed battery compartments in scooters and power chairs. As a high-performance battery option, the SP12-35 NB balances energy density and sustained output, so you enjoy longer run times and dependable performance on each charge.

Built for deep cycle applications, these batteries stand up to frequent discharging and recharging cycles, offering extended service life and consistent power delivery. They are a trusted choice not only for electric wheelchairs, power chairs, mobility chairs, and mobility scooters but also for backup or emergency power setups like UPS systems, emergency lighting, and various tools that require a rugged, maintenance-free battery.

With U.L. and CE certifications, performance guarantees, and a one-year warranty, you can trust these replacement batteries to meet the demands of daily mobility and occasional heavy use. The Nut & Bolt terminals match common original configurations—just reuse your existing cables and hardware for a straightforward swap.

Buy your replacement Invacare Pronto M50 & M51 SP12-35 NB batteries today and restore reliable power to your mobility device. Order now for a high-performance, long-lasting battery solution and fast shipping on in-stock items.

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 : Invacare Pronto M50
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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