National Battery NB12-28 High Performance Replacement Battery 18.1 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 NB12-28 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
12 Volts | 26 Ah
Terminal Type
Nut & Bolt
Replacement National Battery NB12-28 — Compatible with National Battery NB12-28
Designed as a direct replacement battery for the National Battery NB12-28, this high-quality replacement battery delivers reliable performance, dependable compatibility, and peace of mind for critical backup systems. Engineered with proven Absorbent Glass Mat (AGM) construction, the NB12-28 replacement offers maintenance-free operation and spill-proof reliability ideal for UPS units, emergency power systems, mobility devices and portable tools. Whether you need a long-lasting battery for standby power or a high-performance battery for frequent cycling, the NB12-28 replacement is built to meet or exceed OEM specifications.
Key Specifications
- Model: NB12-28 (replacement for National Battery NB12-28)
- Brand (original): National Battery
- Replacement Brand: SigmasTek
- Battery Type: Rechargeable Sealed Lead Acid (SLA)
- Technology: Absorbent Glass Mat (AGM)
- Voltage: 12 Volts
- Capacity: 26 Ah
- Terminals: Nut & Bolt
- Design: Maintenance-Free, Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
Benefits
- Durability: AGM construction and sealed design protect internal plates and electrolyte, reducing leakage risk and providing robust performance in demanding environments.
- Long Life: Designed as a long-lasting battery for standby and cyclic use, the NB12-28 replacement maintains capacity over many charge/discharge cycles to extend service life compared to flooded lead-acid alternatives.
- High Performance: Fast recovery from discharge and consistent voltage under load make this a high-performance battery for sensitive electronics, UPS systems, and emergency lighting.
- Maintenance-Free: The spill-proof, maintenance-free design eliminates the need for routine electrolyte checks and allows installation in multiple orientations without risk of leakage.
- Reliable Compatibility: Engineered to meet or exceed OEM SLA battery specifications for the National Battery NB12-28 model, ensuring a seamless swap-in replacement with correct fit and terminal style (nut & bolt).
- Typical Applications: Ideal for UPS (uninterruptible power supplies), emergency backup power systems, alarm and security systems, medical equipment, mobility scooters, and various power tools that require a dependable 12V 26Ah SLA battery.
- Safety & Certification: U.L. recognition and CE certification provide added assurance for commercial and industrial applications.
If you’re searching for a reliable replacement battery for your National Battery NB12-28, this SigmasTek 12V 26Ah SLA unit is a cost-effective, long-lasting battery solution that delivers consistent power and peace of mind. Order now to restore full performance to your equipment and enjoy fast, secure shipping plus a 1 Year Warranty.
Technical Specifications
Product Highlights
- Brand Replacement : National Battery NB12-28
- 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.
