Invacare Nutron R51 16", 18", 20" U1 High Performance Replacement Battery Set 49.45 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Invacare Nutron R51 16", 18", 20" U1 High Performance Replacement Battery Set is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician 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 BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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.
Volts & Amps
12 Volts | 35 AH
Terminal Type
Nut & Bolt
Invacare Nutron R51 (16", 18" or 20" seat) Replacement Battery
The Invacare Nutron R51 wheelchair relies on dependable power — this replacement battery option is designed for compatibility, performance, and reliability. Built to match or exceed original manufacturer specifications, the Invacare Nutron R51 replacement battery delivers consistent discharge performance, broad operating temperature tolerance, and a long expected service life. Whether you need a single unit to supplement an existing pack or you are replacing both cells, this long-lasting battery solution helps restore mobility with confidence and is offered as a maintenance-free, spill-proof SLA/AGM design you can trust.
Key Specifications
- Model Compatibility: Invacare Nutron R51 (16", 18" or 20" seat) — requires 2 batteries in original configuration
- Volts: 12
- Amps (AH): 35
- Terminal: NB
- Terminal Detail: Nut & Bolt
- Package contains: 1 battery
- Chemistry: SLA (Sealed Lead Acid)
- Technology: AGM (Absorbent Glass Mat)
- Maintenance: Maintenance-free
- Spill Proof: Yes
- Guaranteed compatibility with original battery
- Weight: 49.4Lbs
- Length: 7.72 (inches)
- Width: 5.14 (inches)
- Height: 6.14 (inches)
- Warranty: 1-year Warranty
- Warranty Policy: SigmasTek
- Shipping Methods: UPS Ground and USPS
- Shipping Speed: We ship in 1 business day for all in-stock items
Benefits
This high-performance battery is engineered for durability and dependable output. The AGM, SLA construction provides a sealed, maintenance-free experience that reduces upkeep and prevents spills, making it ideal for mobility devices where safety and cleanliness matter. As a replacement battery for the Invacare Nutron R51, it offers long-lasting battery life and consistent voltage under load, ensuring reliable operation of electronics and motors.
Durability: Robust build and sealed AGM plates resist vibration and typical wear from daily use. Longevity: Designed for a long expected service life compared with standard flooded batteries — a true long-lasting battery option. Performance: High discharge characteristics support motor starts and continuous draw without premature voltage sag, making this a high-performance battery suitable for heavy-duty cycles.
Typical applications include wheelchair power systems, UPS standby modules for small equipment, emergency power backups, and portable tool charging setups where 12V 35AH capacity is required. Install in the same original configuration and reuse your existing cables; always check your existing battery dimensions prior to ordering as manufacturers may change requirements without notice.
If you need a reliable replacement battery for your Invacare Nutron R51, this high-performance, long-lasting battery is ready to restore mobility and confidence. Click to purchase and get fast shipping and a 1-year warranty for peace of mind.
Technical Specifications
Product Highlights
- Brand Replacement : Invacare Nutron R51
- Manufacturer: SigmasTek
- Product Type: Medical Equipment Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
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.




