Invacare Nutron R51ilxp High Performance Wheelchair Replacement Battery
Couldn't load pickup availability
⚠️ 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.
  
📸 Send Your Battery Photo / Unsure? Expert 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 IMAGE
                    
                      
Battery Care Guide
                      
                    
                  
                  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
                      
                    
                  
                  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
⚠️ 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 R51ilxp Batteries — Compatible SP12-55 NB
Revitalize your Invacare Nutron R51ilxp with a brand-new, factory-fresh replacement battery that provides consistent power and reliable operation. These 100% compatible units are ideal for users who need a dependable, long-lasting battery solution to maintain mobility and confidence in everyday activities and emergency situations.
Key Specifications
- Compatible Model: Invacare Nutron R51ilxp
 - 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 R51ilxp unit
 - Brand: SigmasTek
 - Warranty: 1 Year
 
Benefits
These replacement batteries deliver outstanding durability and dependable performance as a high-performance battery option for mobility equipment. The AGM construction combines low maintenance with high resistance to vibration and shock—critical for wheelchairs and scooters in everyday use. Designed specifically for deep cycle performance, the SP12-55 NB sustains reliable energy output across repeated charge cycles, giving you consistent range and usability.
The valve-regulated, spill-proof design reduces the risk of leaks and simplifies installation and transport. A superior power-to-volume ratio provides excellent energy density so you can enjoy extended runtime without adding unnecessary bulk. U.L. recognition and CE certification confirm that these batteries meet stringent safety and quality standards for peace of mind.
Recommended applications include electric wheelchairs, power chairs, mobility chairs, and mobility scooters. Whether restoring daily usability or providing backup power for emergency scenarios, this long-lasting battery performs reliably when it matters. Nut & bolt terminals allow secure connections when reusing your original cables and hardware for a straightforward swap.
Purchase your replacement Invacare Nutron R51ilxp SP12-55 NB batteries now to ensure dependable power and extended service life for your mobility device. In-stock orders typically ship within 24 hours. For help, call customer service at (800) 657-1303. Click to buy and enjoy reliable mobility again.
- 
                      Voltage
 - 
                      Amp Hours
 - 
                      Terminal Type
 - 
                      Length (in.)
 - 
                      Width (in.)
 - 
                      Height (in.)
 - 
                      Weight (lb.)
 - 
                      Warranty
 - 
                      Type
 - 
                      Manufacturer
 - 
                      Brand Replacement
 
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
            
      
      
      