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SigmasTek  |  SKU: BW-8631

Invacare Pronto M50 & M51 Compatible Replacement Battery Set 49.45 lb

10% off
New arrival
Sale price $245.99 USD Regular price $272.99
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Includes 2 high-performance 12V 35AH batteries with NB terminals
Maintenance-free and spill-proof design for hassle-free use
AGM technology ensures long service life and durability
Guaranteed compatibility with original Invacare Pronto M50 & M51 batteries
Ships quickly with a 1-year warranty for peace of mind
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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Invacare Pronto M50 & M51 — Replacement for Pronto M50 & M51 Wheelchair

Specifically compatible with Invacare Pronto M50 & M51 wheelchairs, this replacement battery set contains the two 12V 35AH batteries required to restore optimal performance. These batteries are designed for consistent high discharge performance, a broad operating temperature range, and an extended expected service life. The price includes both batteries; if you prefer a single battery purchase, see Wheelchair Batteries by V and AH. Each unit meets or exceeds the original manufacturer specifications for reliable, trouble-free operation.

Key Specifications

  • Model compatibility: Invacare Pronto M50 & M51
  • Volts: 12V
  • Amps / Capacity: 35 AH
  • Terminal: NB (Nut & Bolt)
  • Package contains: 2 batteries
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorbent Glass Mat)
  • Maintenance: Maintenance-free
  • Spill status: Spill Proof
  • Weight: 49.4 Lbs
  • Dimensions: Length 7.72" × Width 5.14" × Height 6.14"
  • Warranty: 1-year Warranty (SigmasTek)
  • Shipping methods: UPS Ground and USPS
  • Shipping time: We ship in 1 business day for all in-stock items
  • Guaranteed compatibility: Meets or exceeds original manufacturer specifications

Benefits

  • Durability: The AGM and sealed lead-acid construction provides dependable resistance to vibration and daily wear for mobility applications.
  • Long life: Maintenance-free SLA chemistry reduces upkeep and supports extended service intervals, delivering a long-lasting battery option for frequent use.
  • High performance: High-discharge capability ensures steady, powerful output to support the motors and controllers in the Pronto M50 & M51—an ideal high-performance battery for mobility needs.
  • Easy installation: Spill-proof design combined with NB terminals allows reuse of existing cables and maintains safe, secure connections in the original configuration.
  • Multi-use potential: Although developed for the Invacare Pronto M50 & M51, this battery type can serve similar mobility devices and be considered for small-scale UPS or emergency power tasks when matched correctly.
  • Warranty and fast shipping: One-year SigmasTek warranty plus next-business-day shipping for in-stock items provides immediate support and confidence in your purchase.

Restore dependable mobility for your Invacare Pronto M50 or M51 today. Purchase this pair of 12V 35AH replacement batteries for a high-performance, long-lasting battery solution backed by a 1-year warranty and 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 : Invacare Pronto M50
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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