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SigmasTek  |  SKU: BW-8538

Merits Pioneer 1 S143 High Performance 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 AGM technology for safety and reliability
Designed for long service life and wide operating temperature range
Guaranteed compatibility with original Merits Pioneer 1 S143 batteries
Comes with a 1-year warranty and fast shipping within 1 business day
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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

Merits Pioneer 1 S143 Replacement Battery - Compatible with Merits Pioneer 1 S143

Restore reliable power to your Merits Pioneer 1 S143 with this dedicated set of replacement batteries. Specifically compatible with the Merits Pioneer 1 S143, this package includes two 12V 35AH sealed batteries engineered for dependable performance, high-discharge capability, and consistent operation in varied temperatures. These high-performance batteries are designed to meet or exceed the original manufacturer specifications so you can rely on them for daily mobility needs and extended use.

Key Specifications

  • Package contains: 2 batteries
  • Volts: 12
  • Amps: 35 (35 AH)
  • Weight: 49.4 Lbs (as listed)
  • Length: 7.72 (inches)
  • Width: 5.14 (inches)
  • Height: 6.14 (inches)
  • Terminal: NB (Nut & Bolt)
  • Chemistry: SLA (Sealed Lead Acid)
  • AGM Technology: Yes
  • Maintenance-free: Yes
  • Spill Proof: Yes
  • Guaranteed compatibility with original batteries
  • Warranty: 1-year Warranty
  • Brand: SigmasTek
  • Shipping Methods: UPS Ground and USPS
  • Shipping Speed: We ship in 1 business day for all in-stock items

Benefits

  • Durability: AGM construction and spill-proof design keep the cells secure and require no routine maintenance, ideal for mobility devices like the Merits Pioneer 1 S143.
  • Long Life: Engineered for high discharge and wide temperature tolerance, these batteries are a long-lasting battery solution that reduces the need for frequent replacement.
  • High Performance: Provides consistent power delivery and stable voltage under load — a true high-performance battery choice to maintain operational reliability.
  • Installation Convenience: Replace using the same original configuration and cables; NB (Nut & Bolt) terminals match the factory connections for simple swap-in replacement.
  • Multiple Uses: While tailored for wheelchairs, these 12V 35AH SLA/AGM batteries also suit UPS backup, emergency power systems, and small DC tools where sealed lead-acid batteries are appropriate.
  • Reliable Support: Manufactured to meet or exceed OEM expectations and supported with a 1-year warranty and fast shipping to minimize downtime.

Don’t wait — order this pair of replacement batteries for your Merits Pioneer 1 S143 today to secure a high-performance, long-lasting battery solution. Fast shipping and a 1-year warranty make it easy to get back to reliable mobility.

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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