National Battery C18B High Performance Replacement Battery 3.31 lb
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National Battery C18B High Performance Replacement Battery is backordered and will ship as soon as it is back in stock.
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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 C18B Replacement Battery — Compatible with National Battery C18B
Designed to replace the National Battery C18B, this replacement battery delivers dependable compatibility, steady output, and maintenance-free convenience. The SigmasTek 6 Volt 8.5 Ah SLA battery leverages Absorbent Glass Mat (AGM) technology to provide a safe, spill-proof, factory-fresh power source that meets or exceeds OEM specifications. If you want a long-lasting battery that supports critical systems with consistent performance, the C18B replacement is an excellent high-performance battery option.
Key Specifications
- Compatible Model: National Battery C18B
- 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
The National Battery C18B replacement is built for long service life and reduced maintenance. AGM construction improves internal recombination of gases and minimizes electrolyte loss, enabling a sealed, spill-proof design ideal for sensitive installations. As a high-performance battery, it supports reliable start-up currents and consistent float voltage—key for uninterrupted power supplies and emergency systems. The maintenance-free characteristic simplifies ownership and reduces downtime associated with routine battery care.
Typical uses include UPS units, emergency lighting and backup power, security and fire alarm panels, medical equipment backups, and small portable devices that require a dependable 6V source. The 8.5 Ah capacity provides a practical balance of compact size and useful run-time for many standby and cyclic applications. Certified by U.L. and CE, this replacement battery meets recognized safety and quality standards for both consumer and professional use.
If you need a replacement battery that delivers reliable performance and a long-lasting battery life without the premium OEM price, the SigmasTek National Battery C18B replacement is an effective solution backed by a 1 year warranty.
Ready to secure reliable backup power? Add the National Battery C18B replacement battery to your cart and enjoy a high-performance, long-lasting battery you can trust.
Technical Specifications
Product Highlights
- Brand Replacement : National Battery C18B
- Manufacturer: SigmasTek
- Product Type: SLA Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
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