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SigmasTek  |  SKU: BW-9517

Merits Pioneer 1 S133 High Performance Wheelchair Replacement Battery 49.45 lb

19% off
New arrival
Sale price $245.99 USD Regular price $304.99
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Factory fresh Merits Pioneer 1 S133 batteries for reliable power replacement
100% compatible with your Merits Pioneer 1 S133 wheelchair unit
Advanced AGM technology ensures deep cycle durability and spill-proof safety
High energy density offers long-lasting performance for mobility devices
Backed by a 1-year warranty and certified for quality and safety standards
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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.

Brand Replacement

SigmasTek

Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Replacement Merits Pioneer 1 S133 Battery — Compatible with Merits Pioneer 1 S133

Keep your Merits Pioneer 1 S133 powered with this factory-fresh, high-quality replacement battery designed specifically for the Merits Pioneer 1 S133. Built for dependable performance and reliability, this replacement battery offers a stable power source that restores mobility and confidence to your power chair. Whether you need a single swap or to replace both cells, these batteries deliver consistent deep-cycle performance for extended use.

Key Specifications

  • Compatible Model: Merits Pioneer 1 S133
  • Battery Model: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage: 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
  • Quantity Required: Unit requires 2 batteries
  • Performance: Performance Guaranteed

Benefits

These Merits Pioneer 1 S133 replacement batteries are engineered for durability and long life. The AGM construction and valve-regulated, spill-proof design provide rugged, maintenance-free operation that resists vibration and leakage—critical features for mobility devices. As a high-performance battery option, they are optimized for repeated deep-cycle discharge and recharge, giving you more usable run time between charges and consistent voltage under load.

Expect a long-lasting battery solution that supports daily use in electric wheelchairs, power chairs, mobility chairs, and mobility scooters. In addition to mobility applications, these batteries are suitable for related standby and portable power uses such as small UPS systems, emergency power backup, and portable tools where a compact, reliable 12V 35AH source is required. Their unmatched power-to-volume ratio makes them an excellent choice when space is limited but reliable energy is essential.

Installation is straightforward when you reuse the original cables and hardware as specified for the SP12-35 NB configuration. With U.L. recognition and CE certification, these batteries meet industry safety expectations while delivering performance guaranteed by the manufacturer.

Restore mobility and confidence today — buy this Merits Pioneer 1 S133 replacement battery now to secure a high-performance battery that’s built to last. Order your long-lasting battery with confidence and get back to reliable 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 1
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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