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SigmasTek  |  SKU: BW-9089

Invacare Nutron R51LX High Performance Wheelchair Replacement Battery

Sale price $313.99 USD Regular price $480.28
Shipping calculated at checkout.

➤ Factory fresh, brand new replacement batteries for reliability

➤ 100% compatible with Invacare Nutron R51LX wheelchair units

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

➤ Valve regulated, spill-proof design for safety and maintenance-free use

➤ Backed by 1 year warranty and certified for quality and performance


📦🚀 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 | 55 AH

Terminal Type

Nut & Bolt

Replacement Invacare Nutron R51LX Batteries — Compatible SP12-55 NB

Get dependable power for your Invacare Nutron R51LX with our factory-fresh replacement batteries. These 100% compatible units are built to provide consistent performance and reliable run-time for daily mobility tasks and emergency use. Choose a long-lasting battery that restores range and confidence to your Nutron R51LX mobility system.

Key Specifications

  • Compatible Model: Invacare Nutron R51LX
  • Battery Model: SP12-55 NB
  • Voltage: 12 Volts
  • Amp-Hours: 55 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM)
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof
  • Energy Characteristics: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Performance: Performance Guaranteed
  • Requires: 2 batteries for the Invacare Nutron R51LX unit
  • Brand: SigmasTek
  • Warranty: 1 Year

Benefits

Engineered for durability and steady output, this replacement battery is an excellent high-performance battery choice for mobility devices. AGM technology ensures the battery is maintenance-free and resistant to leakage and vibration—important features for equipment that experiences frequent movement. Designed for deep cycle use, it provides reliable performance across many charge/discharge cycles, delivering the consistent runtime users depend on.

The valve-regulated, spill-proof design enhances safety and simplifies handling and installation. Thanks to a strong power-to-volume ratio, this SP12-55 NB offers robust energy density so you gain better runtime without adding undue size or weight to your mobility device. U.L. and CE certifications offer additional peace of mind regarding safety and performance compliance.

Suitable applications include electric wheelchairs, power chairs, mobility chairs, and mobility scooters. Whether you require dependable daily operation or a trusted backup for emergencies, this long-lasting battery delivers the stability and endurance needed for modern mobility solutions. The nut & bolt terminals permit secure reconnection using your original cables and hardware with minimal effort.

Order your replacement Invacare Nutron R51LX SP12-55 NB batteries today to experience reliable, long-lasting battery performance. In-stock orders typically ship within 24 hours. For assistance, contact customer support at (800) 657-1303. Add to cart now and restore dependable power to your mobility device.


Payment & Security

Payment methods

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