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SigmasTek  |  SKU: BW-9660

IMC Heartway Rumba SF P-4F U1 High Performance Wheelchair Replacement Battery 49.45 lb

24% off
New arrival
Sale price $245.99 USD Regular price $324.99
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Factory fresh and brand new for reliable performance
100% compatible with IMC Heartway Rumba SF P-4F U1 wheelchair units
Absorbent Glass Mat (AGM) technology for deep cycle use
Valve regulated and spill-proof design for safety and durability
Includes 1-year warranty and is U.L. recognized and CE certified
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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 IMC Heartway Rumba SF P-4F U1 Wheelchair Batteries (SP12-35 NB) - 12V 35AH

These replacement batteries are manufactured to be fully compatible with IMC Heartway Rumba SF P-4F U1 mobility units and are supplied factory fresh to deliver reliable, deep-cycle performance. Designed as SP12-35 NB (12V 35AH) cells, these high-performance battery units restore mobility range and responsiveness for power chairs and mobility scooters. Be sure to reuse your original cables and hardware for correct installation.

Key Specifications

  • Compatible model: IMC Heartway Rumba SF P-4F U1
  • Required battery type: SP12-35 NB (12 V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Battery chemistry/technology: Absorbent Glass Mat (AGM)
  • Usage design: Designed For Deep Cycle Usage
  • Construction: Valve Regulated, Spill Proof
  • Energy density: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Terminal type: Nut & Bolt
  • Brand: SigmasTek
  • Warranty: 1 Year

Benefits

These replacement battery packs are designed for long service life and dependable operation under the demanding conditions of daily mobility use. The AGM deep-cycle construction supports frequent deep discharge cycles while maintaining capacity and minimizing maintenance needs, delivering a long-lasting battery solution for electric wheelchairs, power chairs, mobility chairs, and mobility scooters.

As a high-performance battery, the SP12-35 NB maximizes energy density so you can get extended range without sacrificing a compact footprint. The valve-regulated and spill-proof design ensures safe operation and easy installation, while nut & bolt terminals provide a secure mechanical and electrical connection when reusing your original hardware. Combined with U.L. and CE certifications, these features make the product a trusted replacement battery option for mobility users and service technicians.

Investing in these factory-fresh replacement batteries helps maintain rider independence, improves daily reliability, and reduces the likelihood of unexpected power failures. The included 1-year warranty reinforces product confidence and supports post-purchase peace of mind.

Restore performance to your IMC Heartway Rumba SF P-4F U1 — purchase these long-lasting, replacement batteries today for better range and dependable 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 : IMC Heartway Rumba
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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