National C90A High Performance Replacement Battery 68.06 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 C90A 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 | 100 Ah
Terminal Type
Nut & Bolt
Replacement National Battery C90A — Compatible with National Battery C90A
Upgrade your power system with this National Battery C90A replacement battery designed for perfect compatibility with the National Battery C90A model. Built for reliable performance and consistent power delivery, this replacement battery combines AGM technology and a maintenance-free, spill-proof design to deliver a high-performance battery option you can trust. Whether you need dependable reserve power for emergency systems or consistent runtime for equipment, this long-lasting battery provides the stability and safety required by demanding applications.
Key Specifications
- Model Compatibility: National Battery C90A
- Technology: Absorbent Glass Mat (AGM) Technology
- Design: Maintenance-Free Design with Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 100 Ah
- Terminal Type: Nut & Bolt
Benefits
This replacement battery is crafted to deliver long-term value and dependable service. The AGM construction enhances vibration resistance and reduces internal stratification for consistent performance over many cycles. As a high-performance battery built to meet or exceed OEM SLA specifications, it is ideal for applications requiring steady, reliable power.
Durability: The sealed, spill-proof, maintenance-free design minimizes upkeep and protects equipment from electrolyte leakage. Certified by U.L. and CE, the battery meets recognized safety and quality standards for peace of mind in critical installations.
Long life and reliability: With factory-fresh cells and a 1 year warranty, this long-lasting battery supports repeated charge/discharge cycles while maintaining capacity. It is an excellent replacement battery for UPS systems, emergency backup power, alarm and security systems, telecommunications, and mobility equipment.
Typical applications include UPS backup, emergency power systems, power tools where an SLA is required, renewable energy storage arrays, and any equipment specified for the National Battery C90A. The Nut & Bolt terminals make installation secure and compatible with many existing setups.
Ready to replace your old pack with a reliable, high-performance battery? Order this National Battery C90A replacement battery today to secure dependable runtime and the peace of mind that comes with a trusted, long-lasting battery solution.
Technical Specifications
Product Highlights
- Brand Replacement : National Battery C90A
- 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.




