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SigmasTek  |  SKU: BW-9971

Amigo EXT350 670000 Wheelchair Compatible Replacement Battery

Sale price $214.25 USD Regular price $280.53
Shipping calculated at checkout.

➤ Factory fresh, high-quality replacement batteries for Amigo EXT350 670000

➤ 100% compatible with your Amigo EXT350 670000 wheelchair unit

➤ Uses Absorbent Glass Mat (AGM) technology for deep cycle performance

➤ Valve regulated, spill-proof design ensures safe and reliable use

➤ Backed by a 1-year warranty and certified for safety and 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

Amigo EXT350 670000 Replacement Wheelchair Batteries - Compatible with SP12-35 NB

Get back on the road with these high-quality replacement batteries designed for the Amigo EXT350 670000. The SP12-35 NB batteries are factory fresh and built to deliver the deep-cycle capacity and reliable energy density needed for power chairs and mobility scooters. When you need a dependable, long-lasting battery replacement that restores range and performance, these batteries offer an excellent balance of durability and value.

Key Specifications

  • Compatible Model: Amigo EXT350 670000
  • Required Quantity: 2 batteries (per unit)
  • Battery Model: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal: Nut & Bolt
  • Brand: SigmasTek
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage: 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
  • Warranty: 1 Year Warranty
  • Performance Guaranteed

Benefits

  • Durability: The valve-regulated AGM design and robust construction protect against spills and physical stress, making these batteries well-suited for everyday mobility use and transport.
  • Long Life: Tailored for deep-cycle performance, SP12-35 NB batteries provide consistent output throughout numerous discharge/charge cycles, offering a long-lasting battery solution that reduces the need for frequent replacements.
  • High Performance: With an optimized power-to-volume ratio and high energy density, these batteries maintain steady voltage under load to ensure reliable operation of motors and controllers—an essential trait of any high-performance battery.
  • Maintenance-Free: AGM construction eliminates the need for watering and minimizes maintenance demands, making installation and upkeep straightforward for users and technicians alike.
  • Typical Applications: Ideal for electric wheelchairs, power chairs, mobility chairs, and mobility scooters, and also applicable for UPS backup, emergency power, and portable tools where a dependable 12V deep-cycle battery is required.
  • Safety & Compliance: U.L. recognition and CE certification indicate that these batteries meet recognized safety standards for use in mobility devices.

Ready to restore reliable range and performance to your Amigo EXT350 670000? Order your replacement battery pair today for fast shipping and the assurance of a brand new, warranted, high-quality battery solution.


Payment & Security

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