Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-9353

Quantum Rehab Q1103 Ultra Wheelchair Compatible Replacement Battery 49.45 lb

20% off
New arrival
Sale price $245.99 USD Regular price $307.99
Shipping calculated at checkout.
Factory fresh replacement batteries for Quantum Rehab Q1103 Ultra wheelchairs
AGM technology ensures deep cycle performance and long battery life
Valve regulated, spill-proof design for safe and maintenance-free use
100% compatible with original Quantum Rehab Q1103 Ultra units
Backed by a 1-year warranty for reliable performance and peace of mind
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 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 Quantum Rehab Q1103 Ultra Wheelchair Battery (SP12-35 NB, 12V 35AH)

Keep your Quantum Rehab Q1103 Ultra running at its best with a factory-fresh replacement battery designed for compatibility, reliability, and strong everyday performance. This replacement battery is specifically matched to the Quantum Rehab Q1103 Ultra and provides consistent deep-cycle energy for mobility use. If you need a long-lasting battery that combines safety, power density, and dependable service life, this high-performance battery is an ideal choice.

Key Specifications

  • Compatible Model: Quantum Rehab Q1103 Ultra
  • Battery Type / Model Required: SP12-35 NB (12 V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage Design: 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
  • Installation Note: Requires use of all existing cables and hardware from original configuration

Benefits

Built with AGM technology and a valve-regulated, spill-proof design, this replacement battery provides exceptional durability and maintenance-free operation. The deep-cycle design delivers repeated reliable performance under daily use conditions, making it an excellent long-lasting battery option for mobility devices. The high power-to-volume ratio ensures you get more usable energy in a compact package, which matters for wheelchairs and scooters with limited battery compartments.

This high-performance battery supports common mobility applications such as electric wheelchairs, power chairs, mobility chairs, and mobility scooters, delivering steady voltage and dependable run-times. Beyond mobility, the battery's certified safety credentials and energy density make it suitable for small UPS configurations, emergency backup needs, and compact power systems where dependable 12V deep-cycle performance is required.

Choosing this replacement battery gives you a combination of factory-new quality, recognized safety certifications, and a one-year warranty to back your purchase. For installation, simply reuse the existing cables and hardware from your original configuration to ensure correct and safe connection.

Don’t wait — restore the power and reliability of your Quantum Rehab Q1103 Ultra today with this high-performance, long-lasting replacement battery. Order now to secure dependable mobility and fast shipping.

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 : Quantum Rehab Q1103
  • Manufacturer: SigmasTek
  • Product Type: Medical Equipment Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.