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SigmasTek  |  SKU: BW-9557

Merits Pioneer 3 S135 U1 High Performance Wheelchair Replacement Battery 49.45 lb

21% off
New arrival
Sale price $245.99 USD Regular price $309.99
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Factory fresh, brand new Merits Pioneer 3 S135 U1 replacement batteries
100% compatible with Merits Pioneer 3 S135 U1 wheelchair units
Uses Absorbent Glass Mat (AGM) technology for deep cycle performance
Valve regulated, spill-proof design ensures safety and reliability
Includes 1-year warranty and U.L. recognized, CE certified quality
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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.

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Brand Replacement

SigmasTek

Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement Merits Pioneer 3 S135 U1 Battery — Compatible with Merits Pioneer 3 S135 U1

Upgrade your mobility with this replacement Merits Pioneer 3 S135 U1 battery designed specifically for the Merits Pioneer 3 S135 U1 wheelchair. Built for consistent performance and reliable operation, this long-lasting battery uses advanced AGM technology and deep-cycle design to deliver dependable power when you need it most. Whether you depend on your power chair every day or want a high-performance battery for occasional use, these factory fresh units are 100% compatible with your Merits Pioneer 3 S135 U1 and engineered for exceptional energy density and safety.

Key Specifications

  • Model Compatibility: Merits Pioneer 3 S135 U1
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Usage: Designed for Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Energy: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Safety Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Voltage: 12 Volts
  • Capacity: 35 AH (SP12-35 NB) — requires 2 batteries per unit
  • Terminal Type: Nut & Bolt (SP12-35 NB)
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek

Benefits

  • Durability: AGM construction and valve-regulated design protect against spills and vibration for long service life in mobility applications.
  • Long Life: Deep-cycle engineering provides extended run times and more recharge cycles compared to standard batteries, offering a truly long-lasting battery option for daily use.
  • High Performance: Optimized power-to-volume ratio delivers consistent voltage under load so your power chair or mobility scooter maintains reliable speed and torque.
  • Safety & Certification: U.L. recognized and CE certified for peace of mind in medical and mobility environments.
  • Typical Applications: Ideal for electric wheelchairs, power chairs, mobility chairs, mobility scooters — also suitable as a dependable power source for UPS systems, emergency power backups, and portable power tools where 12V deep-cycle performance is required.
  • Easy Replacement: Direct fit for Merits Pioneer 3 S135 U1 using all existing cables and hardware from the original configuration.

Choose this high-performance replacement battery for your Merits Pioneer 3 S135 U1 to restore peak mobility and confidence. Order now to get a reliable, long-lasting battery backed by a 1-year warranty and fast shipping — buy your replacement battery today and enjoy dependable power when it matters most.

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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