How to Replace the Battery in Your Garmin TT25 & T20 E-Collar

In this step-by-step tutorial, we show you exactly how to replace the battery on a Garmin Alpha T20 or TT25 dog collar. Whether you’re installing a regular battery or upgrading to the extended battery, the process is simple with the right tools. We walk through removing the collar, antenna, and case screws, then safely installing the new battery and reassembling the unit without damaging the pins. Perfect for hunters, trainers, and dog owners who rely on their Garmin collars, this guide will help you keep your Alpha T20 or TT25 running strong in the field. For additional support, visit support.garmin.com.

🔹Order a Garmin TT25 Tracking + Training Collar
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🔹Order a Garmin T20 Add-On GPS TRACKING ONLY Collar
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🔹Shop more for your TT25 or T20
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👉 WATCH: Steve's Review on the TT25 and T20 Collars
   • Track & Train Like a Pro with the Alpha 30...  

👉 WATCH: Deep Dive into the Garmin Alpha TT25 and T20 collars
   • DEEP DIVE: Garmin's Alpha TT25 and T20 Col...  

👉 WATCH: Replace the Flex Band Antenna on your TT25 or T20 collar
   • How to Replace the GPS Flex Band Antenna o...  

✅Steve's Dog Training Collars Buyer's Guide
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📞 Need help getting started? Call us at 1-800-624-6378 — we’ll walk you through exactly what you need to train your dog right.

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