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SigmasTek  |  SKU: BW-8756

Merits Pioneer 3 S131 Deluxe U1 High-Performance Replacement Battery Set 49.45 lb

17% off
New arrival
Sale price $245.99 USD Regular price $297.99
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Includes 2 high-performance 12V 35AH batteries with NB terminals
Maintenance-free, spill-proof design with AGM technology
Guaranteed compatibility with original Merits Pioneer 3 S131 Deluxe U1 batteries
Wide operating temperature range and long service life for reliable power
Backed by a 1-year warranty for quality assurance and peace of mind
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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 Battery for Merits Pioneer 3 S131 Deluxe U1 Wheelchair

Renew the power in your Merits Pioneer 3 S131 Deluxe U1 wheelchair with this matched pair of replacement batteries. These two 12V 35AH batteries feature NB (Nut & Bolt) terminals and AGM sealed SLA construction for a maintenance-free, spill-proof power source. Engineered for reliability and high performance, this long-lasting battery kit is designed to meet or exceed the original equipment specifications so you can rely on consistent operation every day.

Key Specifications

  • Package contains: 2 batteries
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal: NB (Nut & Bolt)
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorbent Glass Mat)
  • Weight: 49.4 Lbs (as listed)
  • Dimensions (per battery): Length 7.72 in, Width 5.14 in, Height 6.14 in
  • Maintenance-free and spill proof
  • Guaranteed compatibility with original batteries
  • Warranty: 1-year Warranty
  • Brand indication: SigmasTek (as listed)
  • Shipping Methods: UPS Ground and USPS
  • Shipping speed: We ship in 1 business day for all in-stock items
  • Terminal hardware style: Nut & Bolt

Benefits

  • Durability: AGM and sealed SLA design provide rugged, maintenance-free service that stands up to frequent use in mobility applications.
  • Long life: The high discharge design and broad operating temperature tolerance contribute to a long-lasting battery life, minimizing replacement frequency.
  • High performance: These batteries are built to perform like or better than the originals, delivering stable power and reliable performance for your wheelchair.
  • Typical applications: Perfectly matched for the Merits Pioneer 3 S131 Deluxe U1; also suitable for similar mobility devices and can serve as backup for small UPS systems, emergency power supplies, and compatible tools.
  • Easy swap-in: Install in the same original configuration and reuse your existing cables; NB terminals (Nut & Bolt) give a solid electrical connection.
  • Assurance: Backed by a 1-year warranty and fast shipping, so you get a dependable replacement battery when you need it most.

Confirm your current battery dimensions before ordering and if you only need a single replacement battery, please visit Wheelchair Batteries by V and AH to purchase one unit. Ready to secure a trusted, high-performance replacement battery for your Merits Pioneer 3 S131 Deluxe U1? Click to buy this pair now and restore dependable, long-lasting power.

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 : Merits Pioneer 3
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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