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SigmasTek  |  SKU: BW-10258

CTM HS-685 High Performance Compatible Wheelchair Replacement Battery 24.72 lb

16% off
New arrival
Sale price $122.99 USD Regular price $145.99
Shipping calculated at checkout.
Factory fresh CTM HS-685 wheelchair battery with high-quality construction
100% compatible with CTM HS-685 units using SP12-35 NB (12V 35AH) specification
Absorbent Glass Mat (AGM) technology for deep cycle performance and durability
Valve regulated, spill-proof design ensures safe and reliable operation
Includes 1-year warranty with U.L. recognized and CE certified quality assurance
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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

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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

SigmasTek Replacement CTM HS-685 Battery — Compatible with CTM HS-685 (SP12-35 NB)

Upgrade your CTM HS-685 wheelchair with this brand new SigmasTek replacement battery. Purpose-built for compatibility with the CTM HS-685 and specified as SP12-35 NB (12 V 35 AH), this high-performance battery delivers the dependable power and deep-cycle capability needed for daily mobility and extended use. Expect a long-lasting battery that offers maintenance-free convenience and reliable operation in demanding mobility applications.

Key Specifications

  • Brand: SigmasTek
  • Model / Compatible: CTM HS-685 (SP12-35 NB)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Performance: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal: Nut & Bolt
  • Warranty: 1 Year Warranty
  • Performance Guarantee: Performance Guaranteed

Benefits

  • Durability: AGM and valve-regulated construction resist spills and tolerate the vibration common in mobility devices, extending service life.
  • Long life: Designed for deep-cycle usage to give you consistent discharge and recharge cycles, making it a long-lasting battery choice for frequent use.
  • High performance: Exceptional power-to-volume ratio and AGM chemistry deliver steady, reliable current — a true high-performance battery for mobility applications.
  • Maintenance-free: Sealed, valve-regulated design eliminates electrolyte maintenance and simplifies installation.
  • Typical applications: Ideal for electric wheelchairs, power chairs, mobility chairs, mobility scooters, and similar devices requiring SP12-35 NB packs.
  • Installation note: This replacement battery is drop-in compatible but requires reuse of your original cables and hardware for connection — follow existing setup for safe installation.
  • Safety and confidence: U.L. and CE markings plus a 1 year warranty deliver peace of mind for your mobility investment.

If you depend on your CTM HS-685 for daily mobility, choose this SigmasTek replacement battery for a reliable, long-lasting battery solution. Purchase today to restore full power and enjoy fast shipping on in-stock items.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)24.7

Product Highlights

  • Brand Replacement : CTM HS-685 Wheelchair
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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