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SigmasTek  |  SKU: BW-9353

Quantum Rehab Q1103 Ultra Wheelchair Compatible Replacement Battery

Sale price $214.25 USD Regular price $280.53
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


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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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.
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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


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.


Payment & Security

Payment methods

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