Silent Knight S121 High Performance Replacement Battery 3.5 lb
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Silent Knight S121 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
12 Volts | 5.5 Ah
Terminal Type
F2
Silent Knight S121 Replacement Battery — Compatible Silent Knight S121
The Silent Knight S121 replacement battery delivers OEM-level compatibility and dependable power for critical systems. Built to meet or exceed SLA specifications, this replacement battery offers maintenance-free operation and certified safety for use in sensitive equipment. Whether you’re replacing batteries in emergency lighting, alarm panels, or medical devices, the Silent Knight S121 provides a high-performance battery solution and a long-lasting battery option to keep your systems protected.
Key Specifications
- Model: Silent Knight S121 (Replacement)
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 5.5 Ah
- Terminal Type: F2
- Technology: Absorbent Glass Mat (AGM) Technology
- Design: Maintenance-Free, Spill Proof Construction
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compliance: Meets or exceeds OEM SLA battery specifications
Benefits
- Superior Durability: The AGM design and spill-proof casing enhance mechanical resilience and minimize leakage risk, making it a dependable replacement battery choice for field service.
- Long-Term Reliability: As a long-lasting battery, it sustains capacity over numerous cycles, reducing downtime and service calls.
- Consistent High Performance: Designed to deliver reliable current under load, this high-performance battery is suitable for emergency lighting circuits and alarm systems that require uninterrupted operation.
- Hassle-Free Maintenance: The maintenance-free construction eliminates the need for periodic electrolyte checks, saving time for maintenance personnel.
- Multipurpose Applications: Recommended for emergency lighting, security alarms, fire alarms, home & garden devices, consumer electronics, and medical equipment. Also ideal for UPS backups, emergency power setups, and portable tools where dependable 12V power is necessary.
- Direct Compatibility: Guaranteed 100% fit with the Silent Knight S121 model to ensure a seamless replacement experience.
Ready to upgrade to a reliable Silent Knight S121 replacement battery? Order now to receive a brand new, factory fresh, certified battery backed by a 1 year warranty and restore reliable power to your equipment today.
Technical Specifications
Product Highlights
- Brand Replacement : Silent Knight S121
- Manufacturer: SigmasTek
- Product Type: Emergency Power
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
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