Ritar RT645 High-Performance Compatible Replacement Battery 1.59 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.
Ritar RT645 High-Performance Compatible 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 | 4.5 AH
Terminal Type
F1
Ritar RT645 Replacement Battery — Compatible with Ritar RT645
Restore dependable backup power with this Ritar RT645 replacement battery built for full compatibility and reliable performance. Designed to meet or exceed OEM SLA specifications for the Ritar RT645, this sealed lead-acid unit uses Absorbent Glass Mat (AGM) technology to provide maintenance-free, spill-proof performance. If you need a long-lasting battery that ensures emergency lighting and standby systems operate when it matters most, this high-performance battery is an excellent replacement choice.
Key Specifications
- Model Compatibility: Ritar RT645
- Listed as: Ritar RT645 Battery (Replacement)*SigmasTek*6 Volts4.5 AHF1
- Absorbent Glass Mat (AGM) Technology
- Maintenance-Free Design with Spill Proof Construction
- U.L. Recognized and CE Certified
- Brand New, Factory Fresh
- 1 Year Warranty
Benefits
This replacement battery offers enhanced durability and a long operational life thanks to AGM construction, which improves cycle stability and reduces maintenance requirements. The sealed, maintenance-free design prevents leaks and simplifies installation and service, making it a practical option for facility managers and service technicians who need a reliable, long-lasting battery for the Ritar RT645.
As a high-performance battery, it provides consistent power delivery for emergency lighting, exit signs, small UPS systems, alarm equipment, and other standby power applications. UL recognition and CE certification ensure compliance with safety standards, and the brand-new, factory-fresh condition guarantees the battery arrives ready for immediate use.
Installing this replacement battery helps maintain emergency readiness and reduces the risk of failure during power outages. It’s an economical, effective solution for restoring Ritar RT645 systems to full functionality and peace of mind.
Don’t wait—buy this reliable, long-lasting replacement battery for your Ritar RT645 now to ensure continuous emergency power. Order today for fast delivery and the included 1 Year Warranty.
Technical Specifications
Product Highlights
- Brand Replacement : Ritar RT645 Battery
- 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.




