National Battery NB6-8.5 High Performance Replacement Battery 3.31 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.
National Battery NB6-8.5 High Performance Replacement Battery 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
6 Volts | 8.5 Ah
Terminal Type
F1
National Battery NB6-8.5 Replacement Battery — Compatible with National Battery NB6-8.5
Specifically matched to the National Battery NB6-8.5, this replacement battery provides reliable compatibility, steady performance, and maintenance-free operation. The SigmasTek 6 Volt 8.5 Ah sealed lead acid battery uses Absorbent Glass Mat (AGM) technology to deliver safe, spill-proof power for a variety of applications. If you need a replacement battery that offers consistent runtime and dependable performance, this long-lasting battery option is a cost-effective, OEM-grade alternative.
Key Specifications
- Compatible Model: National Battery NB6-8.5
- Replacement Brand: SigmasTek
- Voltage: 6 Volts
- Capacity: 8.5 Ah
- Terminal Type: F1
- Battery Type: Rechargeable Sealed Lead Acid (SLA)
- Technology: Absorbent Glass Mat (AGM) Technology
- Design: Maintenance-Free with Spill Proof Construction
- Safety & Compliance: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
Benefits
This National Battery NB6-8.5 replacement is built for durability and dependable life cycles. AGM construction improves charge acceptance and reduces the risk of leaks and corrosion, while the maintenance-free design eliminates the need for watering and regular maintenance. As a high-performance battery, it delivers consistent starting current and reliable float performance for backup systems. The sealed design and certifications (U.L. and CE) mean safe installation and use in both residential and commercial environments.
Common applications include UPS backup systems, emergency lighting and exit signage, fire and security alarm systems, medical backup devices, and small portable equipment requiring 6V power. Its balanced combination of 6V voltage and 8.5 Ah capacity gives you reliable run-time for many standby and cyclic uses. For technicians and end-users who want a long-lasting battery with proven AGM performance, this replacement is an excellent match.
Choose the SigmasTek National Battery NB6-8.5 replacement battery for a value-driven, long-lasting battery solution that maintains OEM-level performance and is backed by a 1 year warranty.
Ready to replace your old battery with a high-performance battery? Purchase the National Battery NB6-8.5 replacement now and keep your equipment powered when it matters most.
Technical Specifications
Product Highlights
- Brand Replacement : National Battery NB6-8.5
- Manufacturer: SigmasTek
- Product Type: SLA 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.
