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SigmasTek  |  SKU: BW-10319

Amigo HD450 Wheelchair High Capacity Replacement Battery

Sale price $91.99 USD Regular price $140.27
Shipping calculated at checkout.

➤ Factory fresh Amigo HD450 battery for reliable performance

➤ 100% compatible with Amigo HD450 wheelchair model

➤ Advanced AGM technology for deep cycle use and spill proof safety

➤ High energy density delivers longer runtime and consistent power

➤ Includes 1 year warranty for peace of mind and guaranteed quality


📦🚀 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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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

SP12-35 NB (12V 35AH) Replacement Battery for Amigo HD450 Wheelchair

Keep your Amigo HD450 wheelchair powered and ready with this brand new SP12-35 NB (12V 35AH) replacement battery. Specifically engineered for the Amigo HD450, this deep-cycle, factory-fresh battery is 100% compatible and built for the extended run times and dependable performance mobility users demand. It’s a high-performance battery option designed to restore mobility with reliable, long-lasting power.

Key Specifications

  • Model: SP12-35 NB (12V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Energy: 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
  • Terminal: Nut & Bolt
  • Compatibility Note: 100% compatible with Amigo HD450; requires use of all existing cables and hardware from original configuration
  • Applications Listed: Electric Wheelchairs, Power Chairs, Mobility Chairs, Mobility Scooters
  • Performance: Performance Guaranteed

Benefits

Designed as a long-lasting battery solution for mobility devices, the SP12-35 NB excels in durability and cycle life. The AGM, valve-regulated construction provides safe, maintenance-free operation without the risk of leaks, and the battery’s superior power/volume ratio delivers exceptional energy density for longer run times between charges. This deep-cycle battery is optimized for repetitive discharge and recharge cycles typical in wheelchair usage, ensuring consistent performance day after day.

Beyond wheelchair power, this high-performance battery is suitable for a range of applications where deep-cycle stability is required, such as mobility scooters, power chairs, and other personal transport devices. It also serves well in UPS and emergency power roles where a long-lasting battery is needed to sustain critical loads for short durations. The rugged construction and nut & bolt terminals allow secure connections and straightforward installation when reusing original cabling and hardware.

For mobility users and caregivers, the combination of certified safety (U.L. and CE), factory freshness, and a 1 year warranty make this a trustworthy replacement battery choice. It reduces downtime and restores the full operational capability of the Amigo HD450, delivering reliable power where it matters most.

Purchase your SP12-35 NB (12V 35AH) replacement battery for the Amigo HD450 today to regain dependable mobility and enjoy fast shipping and supportive customer service.


Payment & Security

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